Abstract: An upright L- or U-shaped separating container with a pump unit mounted on the horizontal part thereof. The separating container is provided with an inlet opening towards its bottom and an outlet opening towards its top. The pump unit is comprised of a cooled drive motor connected to a liquid ring pump. The liquid ring pump is comprised of a center shaft, an intake stub, and an output stub. The output stub of the liquid ring pump is connected to the inlet opening of the separating container. At least part of the separating container extends below the center shaft of the liquid ring pump of the pump unit.

Abstract: A mechanical compressor system is provided. In the system, a suction line is connected to a first connecting port of a liquid ring compressor, and an exhaust line is connected to a second connecting port of the same. An after-cooler unit is provided which consists of two separate chambers having at least one separating wall and which is arranged with its first chamber in the suction line and with its second chamber in the exhaust line. At least one injection line is provided for injecting fluid from the return line into the suction line upstream from the after-cooler unit, or in the after-cooler unit. Thus, the gaseous working fluid is allowed to be cooled to process-compatible temperatures with only a low power demand and little additional expenditure for installation.

Abstract: Single-stage liquid ring gas pump which can be flanged to a drive unit. The suction and delivery connections are disposed on a connection casing (3) which is to be connected to the drive unit. On the side of the connection casing remote from the drive are disposed a plate cam (4) and a working chamber casing (5) together with the impeller (14) rotating in the latter. The impeller sealingly cooperates on its open end face with the plate cam and on its largely closed end face (19) with an end wall (7) of the working chamber casing (5). The working chamber casing is in the form of a deep-drawn sheet metal part and has no medium connections. For the purpose of connection to the connection casing or the plate cam, it is provided with a radial connection flange (6). The transition from the cylindrical part to the connection flange (6) of the working chamber casing (5) is rounded on the inside such that the gap remaining between this rounding and the plate cam remains below a particular size.

Abstract: To decrease gas leakage across the cantilevered axial end of the hub of a liquid ring pump rotor which has a central recess in that end of the hub, the adjacent port structure is provided with a protrusion which extends axially part way into the recess in the rotor hub. A relatively small clearance is provided between the radially outer surface of the protrusion and the radially adjacent inner surface of the recess. This clearance is filled with liquid and thereby increases the area of the seal at the adjacent axial end of the rotor hub.

Abstract: Liquid-ring gas pump with a working chamber in which an impeller (6) rotates and which is bounded axially by a control plate (7) past which the impeller (6) moves with a small clearance and which has at least one intake and/or discharge opening (21, 22, 23) and is composed of rolled sheet. According to the invention, the edges (26) of the intake and discharge openings are at least in part bent over towards the side facing away from the impeller (6) and are rounded on the side facing the impeller and raised on the side facing away from it.

Abstract: In a water ring type vacuum pump, an impeller (6) having a plurality of blades (6a) is rotatably provided in a pump chamber (3) communicating with an air inlet (1b) and an air outlet (1d), and a water inlet (1a) for feeding sealing water to a center portion of the pump chamber is further provided. Sealing water that has moved to a peripheral wall portion (3a) of the pump chamber (3) flows back to a center portion (3b) of the pump chamber (3). By this arrangement, the sealability of sealing water can be improved and the sealing water can be saved in amount.

Abstract: The auxiliary or working liquid is cleaned by being urged through a pervaporation membrane module (3), then the permeate stream from the membrane module is led through a condenser (4), where the impurities concentrated in the permeate stream precipitate. The stream of retentate and the stream of permeate from the membrane module are then fed back to a compressor (1). The differential pressure of the compressor belonging to the compressor system is used to operate this circuit.

Abstract: A liquid ring machine having a housing in which there is rotatably arranged a rotor having its axis displaced by an amount of eccentricity with respect to the axis of the housing. The liquid ring machine is capable of optimal use in simple manner for both vacuum and compression operations. This result is obtained by ensuring that amount of eccentricity from the housing axis to the rotor axis is directed to oppose the direction of the force of gravity in vacuum operations and is directed in the direction of the force of gravity in compression operations.

Abstract: The invention relates to a multiple-flow liquid ring pump having a rotor housing (1) which surrounds the rotor of the pump and on each of the two end sides of which there is arranged a side shield (2 or 3) which extends at least partially beyond the rotor housing (1) in radial direction, the two side shields (2 and 3) extending in each case beyond the rotor housing (1) at the same point with respect to each other of the circumference, and each side shield (2 or 3) having in its projecting region (corner 16) an inlet opening (7) and an outlet opening (8) on the side facing the corresponding other side shield, in which pump the opposite lying inlet and outlet openings (7 and 8) of the side shields (2 and 3) are connected to each other by connecting tubes (9) that extend parallel to the rotor housing (1), and a suction opening (13) for a feed line and a delivery opening (14) for a discharge line being provided.

Abstract: A support structure for the rotatable housing of a liquid ring pump includes a stationary structure disposed circumferentially around the housing, and a plurality of rollers rotatably and removably mounted on the stationary structure. The rollers support the housing for rotation, and they are distributed axially along and circumferentially about the housing so that any one roller can be removed (e.g., for repair or replacement) without disturbing operation of the pump.

Abstract: A liquid-ring pump according to the invention for use as a vacuum pump, e.g. for the aspiration of centrifugal pumps, and for use in the transport of fluids, e.g. mixtures of liquids and gases or solid particles, is of the type where the distance between the internal surface (17) of the pump housing and the rotor (10) varies. Seen in section, the surface is divided into two identical, reverse-image sectors, in relation to which the rotor (10) is disposed in a symmetrical manner. In the transition area between the two sectors the internal surface (17) is provided with a substantially flat surface (44) stretching tangentially in relation to the periphery of the rotor (10). Thereby cavitiation problems are reduced.

Abstract: Liquid ring pumps with rotating liners supported by a bearing fluid (pressurized liquid or compressed gas) have a bearing fluid distribution system that compensates for the radially unsymmetric load on the rotating liner. If the liner bearing fluid is compressed gas, the axial ends of the liner may be either open and unsealed so that expended bearing gas escapes into the liquid ring in the pump, or the axial ends of the Liner may be partly closed by radially inwardly extending end plates. Various mechanical and/or liquid seal structures may be used in conjunction with the end plates to seal the axial ends of the liner and/or to flush the clearances adjacent the axial ends of the liner.

Abstract: A two stage liquid ring vacuum pump having a selectively variable flow rate of service liquid through a first stage and a second stage. The flow rate through the second stage is reduced by venting service liquid from the second stage prior to normal passage through a discharge port. The vented service liquid is introduced in the first stage to enhance the pumping capacity of the first stage.

Abstract: In a liquid ring pump having a port member with at least one auxiliary gas discharge port in addition to the main gas discharge port, an auxiliary gas discharge conduit is provided to extend the auxiliary gas discharge port so that a relatively large check valve can be more easily provided for the auxiliary port. The auxiliary discharge conduit is preferably provided in the head member of the pump, and it preferably extends away from the auxiliary port in a generally radial direction. This allows the check valve to be placed at a less congested location in the pump, which facilitates provision of a larger check valve and also access to the check valve for such purposes as maintenance of the check valve.

Abstract: A bearing housing, particularly for a liquid ring pump, having an angular bottom projection for aligning the housing with and in a groove-containing receiving base with which it mates and to which it is attached, along with locator stops for accurate end-to-end spacing.

Abstract: The present invention relates to a liquid-ring pump which effectively dampens noise by providing a blocking element arranged in its compression space in the flow path between the mouth of its output port and the outlet opening of its discharge connection. The blocking element covers this outlet opening and has a flow-through opening. The cross-section of the flow-through opening automatically adapts to the quantity of medium delivered by the pump at any given time.

Abstract: A method for non-destructive compression of a reactive gas such as ozone employs a liquid used as a compressant or sealant in a compressor where the liquid is substantially free of elements which decompose the gas. Provision is also made for extraction of heat of compression absorbed by the liquid of the compressant or sealant, for addition of chilled and pH adjusted liquid, and for addition of acid, if necessary.

Abstract: Liquid ring pumps with rotating liners supported by a bearing fluid (pressurized liquid or compressed gas) have a bearing fluid distribution system that compensates for the radially unsymmetric load on the rotating liner. If the liner bearing fluid is compressed gas, the axial ends of the liner may be either open and unsealed so that expended bearing gas escapes into the liquid ring in the pump, or the axial ends of the liner may be partly closed by radially inwardly extending end plates. Various mechanical and/or liquid seal structures may be used in conjunction with the end plates to seal the axial ends of the liner and/or to flush the clearances adjacent the axial ends of the liner.

Abstract: An improved water delivery system for a liquid ring vacuum pump which delivers water through the side of the pump wall. A manifold system aligns outlet ports of the manifold with the inlet ports of the pump itself. Access ports with plugs or caps are also aligned with the pump inlet ports, to provide a quick and easy access to clean out sediment from the manifold. The improved manifold system allows efficient employment of secondary plant liquid in the operation of a liquid ring vacuum pump.

Abstract: A liquid ring machine comprises an outer drum having a cylindrical outer wall 1 surrounding a central axis 2, a vaned rotor 3 rotatable within the drum about an axis 4 which is parallel to, but offset from, the central axis 2 of the drum, and a liquid disposed within the drum such that, when the rotor 3 rotates at a sufficient speed, the liquid forms a rotating ring 5 adjacent the outer wall 1 of the drum. The ends of the vanes 6 on the rotor are maintained in contact with the liquid during such rotation so that a series of chambers 8 is formed between the vanes 6 of the rotor 3. The chambers 8 are bounded at the outer periphery by the liquid ring 5 and vary in volume in dependence on the angular orientation of the rotor 3 in view of the offset between the axis 4 of rotation of the rotor and the central axis 2 of the drum. An inlet 23 and an outlet 25 are provided by means of which a working fluid is introduced into, and discharged from, each of the chambers 8 at appropriate angular positions of the rotor 3.

Abstract: An improved liquid ring vacuum pump apparatus and method for reducing wear between the cone and rotor vanes, by reducing the water flow contacting these parts, by injecting only fresh water into the seal segment while injecting secondary water into the pump through the housing. The apparatus includes dual water injectors, one injector at the periphery of the housing, and a second injector central within the housing, each of which is supplied by a different water source. A novel cone structure including grooves and notches for directing fluid to specific segments within the pump.

Abstract: An improved liquid ring vacuum pump apparatus for reducing wear between the cone and rotor vanes, in which a novel cone structure has a greater thickness and greater external radius in the seal segment than in the remaining segments. An alternative embodiment includes a replaceable wear plate in the seal segment. The cone structure includes grooves and notches for directing fluid to specific segments within the pump.

Abstract: A two-stage liquid ring gas pump has a rotatable liner supported on a liquid bearing in the first stage housing. The liquid for the liner bearing is withdrawn from the second stage liquid ring and is therefore at a pressure which is high enough to support the liner for rotation without the need for any other component such as a liquid pump to pressurize it for that purpose.

Abstract: In liquid ring gas pumps of the type having a rotor rotatably mounted in a stationary housing for forming a quantity of pumping liquid into a recirculating ring inside the housing, fluid friction loss between the liquid and the housing is reduced by shaping the surface of the housing which is in contact with the liquid ring radially outside the rotor so as to minimize or at least substantially reduce the area of that surface.

Abstract: The present invention relates a liquid-ring pump, in which the impeller (5) of the pump is rotatably arranged in the pump chamber formed by the pump housing (2), and the pump chamber is closed off by a disk cam 6 which has at least one inlet slit (8) and several output ports (10). Arranged between the disk cam (6) and a side shield (1) covering this disk cam is a suction chamber (7), connected to the inlet slit (8), and a pressure chamber (9), connected to the output ports. At least one of the output ports (10) is covered by a valve plate which may be moved away from this output port and be supported on a collector plate (12) affixed to the housing. The assembly of the valve plate is facilitated in that the collector plate (12) is connected to the side shield (1), and the valve plate (11) is guided by guide elements (14) penetrating through corresponding openings (15) in the valve plate (11), which openings are arranged between the collector plate (12) and the disk cam (6).

Abstract: In liquid ring pumps having rotating lobe liners supported by a bearing fluid in an annular clearance between the liner and the surrounding housing, the housing has at least one substantially annular channel formed in the housing for distributing the bearing fluid to a plurality of circumferentially spaced apertures extending through the housing from the channel to the clearance.

Abstract: A centrifugal pump for pumping fiber suspensions including a centrifugal pump housing (50) defining a centrifugal pump chamber (54) having a suspension inlet and suspension outlet. Located within the pumping chamber is a centrifugal impeller (60). A vacuum pump chamber (76) defined by a front wall (112) facing the impeller and a rear wall (110) and opposite the front wall is located adjacent the centrifugal pumping chamber (54). A vacuum pump rotor (96) is mounted within the vacuum pump chamber at a distance from the front and the rear walls (112, 110). The axial distance between the vacuum pump rotor and the front and rear walls (112, 110) is adjustable to a value of less than 0.30 mm, and preferably less than about 0.20 mm.

Abstract: A liquid ring compressor has an annular space between the rotor and the rotor axle, the annular space being connected with the rotor compression zone through two or more discharge openings. The liquid ring compressor is operated with improved efficiency.

Abstract: In a liquid ring pump having a rotating liner inside a stationary housing for helping to reduce fluid friction losses, at least one end, and preferably both ends of the liner are partly closed to more completely contain the liquid ring in order to further reduce fluid friction losses.

Abstract: In a liquid-ring rotary compressor having a control element with a suction port, a pressure orifice, and a plurality of supplementary ports in front of the pressure orifice with respect to the direction of rotation of the compressor impeller, each supplementary port having a back-pressure valve, pressure losses are reduced by decreasing the flow area of the supplementary ports toward the pressure orifice so that the total flow area for the supplementary ports that are exposed by the back-pressure valves during the compression operation is roughly proportional, with respect to the prevailing nominal pressure condition of the compressor, to the gas mass existing in the vane chambers. Embodiments for flat and conical control elements is disclosed.

Abstract: In order to continuously supply lubricant to compressor bearings independent of attitude, and under varying gravitational forces, an oil supply system (10) includes an oil sump (14), a pump (22), and a suction tube (24). The oil sump (14) is defined at least in part by a pair of intersecting sump walls (16, 18) each of which may comprise a primary wall dependent upon instantaneous compressor attitude. The pump (22) is adapted to supply the compressor with oil (20) while at the same time removing gases from the oil (20) and expelling the removed gases into the oil sump (14). Additionally, the suction tube extends from the pump to a strategic point within the oil sump (14) for drawing oil (20) from the oil sump (14) to the pump (22) in a manner assisting in priming and repriming during brief interruptions in the flow of oil (20) from the oil sump (14).

Abstract: There is disclosed an improved vacuum assembly for forming a vacuum comprising a vacuum pump having water rings wherein a water stream is injected into the water rings of the vacuum pump and wherein the water stream is comprised of a combined fresh water and a recycled waste water stream and wherein the fresh water stream is used as a motivating force for an eductor for inducing the recycled waste water stream to form the water stream injected into the water rings of the vacuum pump.

Abstract: A fluid compressor comprises a casing containing liquid and having located within it a shaft driven radial impeller for pressurizing the liquid before it is fed to a further rotatable structure. By rotation of the impeller and the further rotatable structure, the high pressure liquid compresses a gas or vapor within the compressor casing and expels it from the casing through an outlet port therein. The high pressure liquid inlet end of the rotatable structure is partially shrouded by a shroud structure to restrict the input of high pressure liquid to part of the rotatable structure. The shroud structure has an opening therein which allows the high pressure liquid entering the rotatable structure to be depressurized and returned to the inlet end of the radial impeller after compressing the gas or vapor. By so doing, further gas or vapor for compression will be drawn into the compressor casing.

Abstract: A liquid ring pump includes an impeller rotatably supported in an open ended cup-shaped housing. The impeller includes blades which are spaced to form pockets therebetween so that a certain amount of liquid may be maintained in the pockets to compress gas introduced beneath the liquid. A control disk having an inlet port and at least one outlet port is positioned adjacent to the impeller. A cup-shaped cover having intake and pressure connections and a partition wall therebetween covers the open end of the housing. The control disk and cup-shaped cover together with the partition wall form a suction chamber in fluid communication with the intake connection and a surge chamber in fluid communication with the pressure connection. Intake gas flows from the intake connection into the suction chamber and then through the control disk inlet port into at least one of the impeller blade pockets.

Abstract: A method and apparatus for distilling, especially vacuum refining and deodorizing edible oils and fats utilizing sheets of oil driven downwardly in a distiller with a vacuum source at its top. A nozzle includes pressure equalization chambers, cantilever adjustment screws, and a central drag sheet to produce longer lasting and more uniform thin oil sheets to be driven in the distiller. A continuous process deaerates, dehydrates, degums, bleaches, refines, removes tocopherol, deodorizes, and strips peroxides and hydroperoxides from raw oil in a series of isothermal stages utilizing driven sheet distillers. No stripping steam is used except in the stage which strips peroxides and hydro peroxides. The method produces valuable, pure products such as tocopherol and fractionated fatty acids. It is especially efficient in heat exchange and low in waste and pollution producing products.

Abstract: A pumping system comprising a liquid ring vacuum pump including a casing and a rotatable runner. A Pitot pump including a casing, a Pitot tube, an impeller and a drum, the impeller and the drum being rotatably mounted in the casing, and the Pitot tube being mounted within the casing adjacent the outer periphery thereof. A gas passage leads into the vacuum pump, from the vacuum pump into the Pitot pump, and out of said Pitot pump, and a liquid passage leads from the Pitot tube to the vacuum pump. The system further includes a cooler connected to the liquid passage for cooling liquid therein, and a drive motor coupled to rotate the runner, the impeller and the drum.

Abstract: An improved refrigeration cycle in which a refrigerant vapor is compressed, condensed and then evaporated for cooling purposes by direct contact with a liquid to be cooled, the improvement comprising feeding a refrigerant vapor to an aqueous liquid sealed compressor; feeding compressor sealing aqueous liquid to the compressor; compressing the refrigerant vapor in the compressor and removing a mixture of compressed refrigerant vapor and aqueous liquid from the compressor; separating aqueous liquid from the refrigerant vapor and returning the aqueous liquid to the compressor; condensing the refrigerant vapor to a liquid, directly contacting the liquefied refrigerant with a liquid to be cooled; and, returning the refrigerant vapor to the compressor.

Abstract: In a conically or cylindrically ported liquid ring pump, compressed gas that would otherwise be carried over from the compression zone to the intake zone of the pump is made to bypass the intake zone by passing through a first aperture in the port member into a clearance between the rotor shaft and the port member and then through a second aperture in the port member from the clearance to an initial portion of the compression zone.

Abstract: An apparatus for improving the operating efficiency of a liquid-flow machine comprises a sensor for measuring the liquid throughput of the liquid-flow machine and a dosing device for controlling, in response to the measured throughput, the amount of a friction-reducing agent added to inflowing working fluid. The friction reducing agent preferably consists of marcomolecular bodies such as polyacrylamides or tensides. Inorganic fiber is also possible as an additive for reducing friction in the liquid-flow machine.

Abstract: A liquid ring gas pump having two axially adjacent, serially connected stages. Gas to be compressed is admitted to the first stage of the pump solely via a first stage inlet opening at the end of the first stage remote from the second stage. The sole outlet for gas to leave the first stage in order to flow to the second stage is a first stage outlet at the end of the first stage adjacent to the second stage. A residual gas outlet is provided at the end of the first stage remote from the second stage for allowing compressed gas that is unable to exit via the first stage outlet to exit via the residual gas outlet and re-enter the first stage via a residual gas inlet also provided at the end of the first stage remote from the second stage and located after the first stage inlet but before the first stage outlet in the direction of rotor rotation.

Abstract: A method and apparatus for treating the distilled water obtained from an evaporation process sea water desalination plant is provided wherein carbon dioxide is extracted from sea water in the high temperature stages of the desalination plant and where the carbon dioxide thus extracted is dissolved into the water, along with calcium, thereby converting the distilled water into the quality suited for city tap water.

Abstract: A method of and apparatus for pumping fluids wherein a rotating ring of liquid traverses a hollow probe which has a surface aperture out of which the fluid to be pumped is sucked into the rotating liquid ring, wherein the fluid migrates to a collection region inside the rotating liquid ring, from where the fluid can pass to a fluid outlet, and wherein a gas which does not condense under the prevailing operating conditions is also fed to the collection region in order to assist throughput of the fluid being pumped.

Abstract: In an inlet region or chamber of an end bell of a liquid-ring pump, an injection nozzle is provided for replenishing the liquid in the rotating ring of the machine.The injection nozzle is arranged in the vicinity of a suction slot provided in a control disc of the liquid-ring pump. The injection nozzle is disposed above a minimum liquid level extend when only gas is being transported by the pump and below a maximum liquid level extant when a mixture of both gas and working liquid is being pumped.

Abstract: A liquid ring machine, in particular, a liquid ring pump comprises a control disk having an opening for a vane wheel shaft and first and second partial ring slots spatially separated from each other and located between an inner edge of a suction slot and the vane wheel shaft opening and an inner edge of a pressure slot and the vane wheel shaft opening of the control disk respectively. An opening to the first partial ring slot from an end bell of the machine is provided at a narrow end of the suction slot for exclusive feeding in of a cold portion of operating liquid. An opening to the second partial ring slot from the end bell is provided between the wide end of the suction slot and the beginning of the pressure slot for exclusive feeding in of a warm portion of operating liquid. The condensation of liquid especially in the vicinity of the suction slot is improved while undesirable evaporation of operating liquid is reduced.

Abstract: Improvements in the sealing area and dynamic operation of liquid ring pumps. The sealing improvement involves providing aspirating means between the cone inlet and the fluid adjacent the shaft on the inboard or high pressure side of the sealing area. In operation, the high pressure fluid that would tend to leak past the seal in prior art to contaminate the bearings or create a potentially dangerous gas explosion is harmlessly aspirated off into the gas being drawn into the pump. Further, in doing so, the sealing properties of the pump seal are enhanced. The dynamic improvement is directed particularly to duplex liquid ring pumps and calls for the rotor blades on one side of the central partition to be offset or out of phase from the mirror-image rotor blades on the other side of the partition.

Abstract: A continuous flow of cooling liquid is provided to a liquid ring pump conveying a flow of gas, such that the cooling liquid simultaneously acts as the working liquid in the pump. Gas that becomes dissolved in the cooling fluid during pumping is separated therefrom and is returned to join the pump gas inlet flow, and the cooling liquid is thereafter discharged to carry away any heat picked up from the pump. In an aspect of this invention, the degassing of dissolved gas from the exhaust cooling water flow leaving the pump is facilitated by forming a spray in a low-pressure degasser connected to the pump gas inlet.

Abstract: Fluid-ring compressor unit having a horizontal shaft and a compressor housing in which, subsequent to the compressor stage, a pressure chamber is made in connection with a pressure connecting piece. The pressure chamber is divided up by a wall, which projects upward at least up to the level of the pressure opening of the compressor stage, into a first area and a second area which are connected to one another above the wall while forming a route for the delivered medium, the second area of which is connected to the pressure connecting piece. The necessity of a separate fluid separator is avoided according to the invention by the pressure chamber being designed as a fluid separator. For this purpose, the route for the delivered medium, in the upper area of the pressure chamber, is equipped with a plurality of deflection portions and/or baffle surfaces which also block off the pressure connecting piece arranged at the top from the pressure opening.

Abstract: To minimize water consumption and to provide enhanced suction ability in a liquid ring vacuum pump the temperature of the exhaust liquid is measured and the amount of operating liquid supplied to the pump is varied.

Abstract: The invention relates to a liquid ring compressor in which only one central emptying opening is provided to the outside per compressor stage. It is ensured by means of appropriate connections of the chambers pertaining to each compressor stage that the entire auxiliary/operating liquid can flow out of the compressor through the central emptying opening (s) when the compressor is stopped.

Abstract: Stalling of liquid ring pumps during start-up is prevented, without the need for a separate liquid pump or other means for initiating or sustaining the flow of make-up pumping liquid into the pump, by providing a bypass conduit for initially conveying some pumping liquid from the relatively high liquid pressure side of the pump to the relatively low liquid pressure side of the pump. This helps the pump establish the internal liquid distribution needed to form a viable liquid ring and create the gas pressure differential necessary to initiate and sustain the inflow of make-up pumping liquid.