Abstract: For a device (4) for the performance adaptation of a liquid ring pump, said liquid ring pump (1) comprising a cylindrical workspace (6) for conveying a conveyed fluid (15) between an intake socket (16a) and a pressure socket (18a). The device (4) comprises a control unit (28), control line (22) and a control element (26) connected with the workspace (6). The device is designed to vary the amount of operating liquid of the liquid ring pump (1) during operation (running) of said pump. Also, a method for adapting the performance of the liquid ring pump (1), which is performed in particular via the device (4) is specified.

Abstract: When liquids are conveyed together in the liquid ring of a liquid ring machine, an increased power requirement and a deterioration of the running characteristics of the rotor result. A liquid ring machine for selectively conveying several liquids has a housing which eccentrically surrounds a rotor and whose end face is closed by lateral shields for the rotor shaft. At least one controlling body is provided with a suction slot and a delivery slot associated with the rotor, and in addition to the delivery slot, has a relief passage located in the delivery area. In order to obtain a liquid ring having an approximately constant thickness, the relief passage is directly connected to the working liquid supply line of the liquid ring machine so that excess liquid flowing out through the relief passage is added directly to the working liquid. The relief passage may also be connected with a closed feed channel which opens outside the machine housing.

Abstract: A liquid ring machine has one partial working chamber of the liquid ring machine which is separated from the supply of operating liquid and is drained of the operating liquid to the point where the part of the impeller rotating in this partial working chamber does not contact the operating liquid, and this partial chamber is blocked on the suction and/or discharge side. The liquid ring machine is able to be optionally partially switched off, thus allowing an adaptation to the specific process requirements.

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 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: A liquid separator integrated into a pressure chamber housing abutting a liquid ring pump comprises a deflector that subdivides space within the pressure chamber housing into two chambers. A discharge port provided in the pressure control disk leads into a first chamber. A gas outlet and at least one liquid outlet are arranged in the region of a second chamber on the pressure chamber housing. Improved liquid separation is achieved with fewer flow losses. The deflector has a curved design which extends through an angle of at least 180.degree.. The portion of the deflector abutting the control disk extends generally in the direction of the gas-liquid current emerging out of the discharge port.

Abstract: A first control disc or plate part of a liquid ring machine referred to herein as a bearing disc, is cast or, more particularly, burned-out of ordinary steel without an end face wall but having an outer circular edge and partitions within the circular outer edge. The outer circular edge and partitions of the bearing disc are ground off so that edges of a front side facing the liquid ring lie in one plane. This bearing disc is then welded to a second separately fabricated flat cover disc of alloy steel, into which cover disc, suction and pressure slots, an operating liquid passage, and a shaft opening have been previously formed, the alloy steel cover disc forming the end face wall of the bearing disc.

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.