Abstract: An axial face seal arrangement, which is arranged for joint rotation with a drive shaft in a rotary machine, includes a base element and a moving part, wherein the base element is connectable to a drive shaft for joint movement therewith, the moving part presenting a sealing end face and being axially movable in relation to the base element and biased from the base element by a spring, wherein the moving part and the base element include at least one torque driver pin and at least one corresponding aperture into which the torque driver pin is displacably inserted for joint rotational movement of the moving part with the base element. At least one wear protection pin is arranged between the torque driver pin and the aperture at a force transmitting interface of the torque driver pin and the aperture.

Abstract: A universal controller (16) for an electric motorized pump (18) having a mechanical switch (19) for turning on and off electrical power to the pump, and method of operation of same. The controller controls output pressure of the pump based on controlling the speed of the pump (for example by applying voltage over a greater portion of a duty cycle), so as to provide an optimal operating pressure derived from an automatically determined value for the pressure at which the mechanical switch opens and disrupts electrical power to the pump. It is manufactured as a standalone assembly, not attached to a pump. It can be operated so as to automatically seek and determine a switch-opening pressure for the switch (19), at which the pump pressure switch opens and so interrupts electrical power to the motor, and to then choose an operating pressure below the switch-opening pressure.

Abstract: The present invention provides a technique using current sensing to control the pressure at constant level without the direct sensing of the pressure. This technique will help to reduce dependency solely on switch or sensor and their non linearity and other associated problems such as the non-repetitive behavior, being affected by EMI etc. The technique includes using a pump controller featuring one or more modules configured to respond to one or more input signals containing information about current provided from a pump; and configured to provide one or more output signals containing information to control the pump to operate at a substantially constant pressure without the direct sensing of pump pressure. The one or more modules control the operation of the pump based at least partly on a table of characteristics related to voltage and current that is calibrated for each pump.

Abstract: A suction connection, including a first flange that includes a centrally located through hole and is arranged to be connected to an outlet of a suction pipe and a second flange that includes a centrally located through hole and that is arranged to be connected to an inlet of a dry installed centrifugal pump. The suction connection includes a first pipe socket, which is displacable in the axial direction between an operative position in which said first pipe socket disengageably connects the first flange and the second flange and thereby puts the through hole of the first flange in fluid communication with the through hole of the second flange, and a service position in which the first pipe socket is located at a distance from the second flange and thereby admit access to the through hole of the second flange.

Abstract: A utility pump is provided featuring a housing and battery configuration, where the housing is configured with a series configuration of integral pumps, and also configured with a battery receiving portion having electrical terminals for receiving power for providing to the series configuration of the integral pumps, and where the battery has a protruding portion with corresponding electrical terminals configured to contact the electrical terminals to provide power to the series configuration of the integral pumps when the protruding portion of the battery is inserted into the battery receiving portion of the housing and rotated in one direction to an “ON” position, and also configured not to contact the electrical terminals when the battery is not rotated to the “ON” position.

Abstract: An aeration assembly includes an end fitting having a top piece for attachment to a diffuser member. A gasket extends beneath the top piece. The aeration assembly may include a diffuser member with the end fitting. In one embodiment, the diffuser member has a hollow conduit section and a flange section. The flange section includes a series of openings extending along a length of the diffuser member. The openings extend through the flange section to an interior space in the conduit section.

Abstract: The invention refers to a pump assembly, and more specifically to a chopping pump assembly comprising a cutting wheel mounted on a drive shaft in coaxial and co-rotational relation with a pump wheel, and a cutting plate stationary mountable in a pump housing between the cutting wheel and the pump wheel, the cutting plate having perforations forming passages there through for a liquid to be transported by the pump wheel in rotation, the cutting wheel and cutting plate in co-operation providing a shearing interface effective for cutting solid matter which may be entrained in the liquid. An axial clearance between the cutting wheel and cutting plate is established at all times by eliminating an axial play in a threaded engagement between the cutting wheel and the drive shaft. The invention also refers to a method by which an operative shearing action is securable in the pump assembly.

Abstract: The present invention provides a method and apparatus for separating air from a fluid, such as syrup, as the fluid enters a first chamber of a system; passing the fluid from the first chamber to a second chamber via a first device; passing the air from the first chamber to the second chamber via a second device so as to reintroduce the air back into the fluid and form a new fluid mixture having more uniform air bubbles; and discharging the new fluid out of the system.

Abstract: The inventions refer to a mixer assembly for generating and maintaining a movement within waste water, comprising a hub (3) and at least two blades (4), which are disengageably connected to said hub (3), the hub (3) in a rear end being arranged to be connected to a drive shaft and thereby being arranged to be driven in rotation about an axially extending centre axis. According to the invention the hub (3) comprises a seat (9) for each of said at least two blades (4), each seat (9) comprising an axially extending first engagement means (10), and that each blade (4) comprises an axially extending second engagement means (11), said first engagement means (10) and said second engagement means (11) together being arranged to admit axial mutual displacement of said hub (3) and each of said blades (4) during mounting/demounting of the propeller assembly, and is thereto arranged to prevent radial mutual displacement of said hub (3) and each of said blades (4) when the mixer assembly is in an assembled condition.

Abstract: The present invention relates to a machine arranged to operate in explosive environments, comprising a rotatable shaft (16) extending through a stationary part (10) of said machine, a gland (20) which is mounted in said stationary part (10) and which is provided with a through hole in order to accommodate said rotatable shaft (16) such that a flame path is provided between the rotatable shaft (16) and the gland (20). The invention is characterized in that the machine comprises dampening means (42) arranged between and separates the gland (16) and the stationary part (10) in the axial and radial directions such that a flame path (50, 56) is provided, the dampening means (42) maintaining the flame path (50, 56) and permitting axial and radial movement of the gland (20) in relation to the stationary part (10) upon rotation of the rotatable shaft (16).

Abstract: A searchlight is provided featuring a bezel pull-in retention assembly having a frame and a housing. The frame has a back plate configured with at least one opening to receive a fastening device. The housing is configured with a front end opening for receiving the frame, configured with a back end opening having an outer rim for receiving a seal plate, the seal plate configured to be adapted in the rim of the back end opening, to receive the fastening device and to fixedly couple the frame to the housing.

Abstract: The present invention provides apparatus featuring a check valve featuring a duckbill valve configured to provide fluid and particulate; and an insert having a base portion configured to seat the insert inside the duckbill valve, and a W-shaped portion configured with an opening to pass the fluid and particulate through the duckbill valve and also configured to provide support for walls of the duckbill valve in response to back pressure caused by the fluid and particulate.

Abstract: A UV disinfection system for waste water and drinking water, includes a number of UV radiators arranged in cladding tubes, the cladding tubes being configured essentially symmetrically to a longitudinal axis, as well as a cleaning device for the cladding tubes. The cleaning device includes at least one cleaning ring for each cladding tube, which surrounds the cladding tube, the at least one cleaning ring having a scraper ring resting against the cladding tube, at least one drive for driving the cleaning ring in the direction of the longitudinal axis, and supply provisions for supplying pressurised fluid under elevated pressure from a pressure source to the scraper ring are provided, wherein pressure may be applied onto the scraper ring from the pressure source in the direction of the cladding tube.

Abstract: A UV disinfection system for waste water and drinking water, including a number of UV radiators arranged in cladding tubes and a cleaning device for the cladding tubes. The cladding tubes are configured essentially symmetrically to a longitudinal axis. The cleaning device for the cladding tubes includes (a) at least one cleaning ring for each cladding tube, which surround the cladding tube, (b) at least one drive for driving the cleaning ring in the direction of the axis, wherein the at least one cleaning ring is disposed at a distance (d) from the surface of the cladding tube, (c) openings directed in the cleaning ring towards the cladding tube, and (d) a supply of pressurised liquid under high pressure into the openings so that the pressurised liquid is directed as a cleaning jet onto the surface of the cladding tube.

Abstract: The invention relates to a pump for pumping contaminated liquid including solid matter, comprising a pump housing provided with a rotatable impeller suspended in a drive shaft and having at least one vane, and an impeller seat, at least one part of the impeller and the impeller seat being movable in the axial direction in relation to each other. Furthermore, the impeller seat presents at least one groove in the top surface thereof.

Abstract: The present invention provides a system featuring a dispenser for providing fluid from multiple reservoirs to an appliance or other suitable device; and a multiple tubing arrangement coupled between the dispenser and the multiple reservoirs of fluid, the multiple tubing arrangement being responsive to a vacuum provided from the dispenser, for drawing the fluid from the multiple reservoirs so as to deplete the multiple reservoirs at relatively equal amounts based on the Venturi effect. The multiple tubing arrangement comprises a primary inlet tube for arranging in a primary reservoir, an auxiliary inlet tube for arranging in an auxiliary reservoir, and a feed connector tube arranged between the primary inlet tube and auxiliary inlet tube. The primary inlet tube is coupled to the auxiliary inlet tube so as to provide a proportional vacuum and siphoning effect. The multiple tubing arrangement siphons and depletes the fluid from the primary reservoir and the auxiliary reservoir based on the Venturi effect.

Abstract: The invention relates to a pump for pumping contaminated liquid including solid matter, comprising an impeller (1), which is rotatable in a pump chamber of said pump, the impeller (1) being movable in the axial direction in relation to a seal housing cover (3) between a first position adjacent to an impeller seat (2) and a second position spaced apart from said impeller seat (2), said pump also comprising a cavity (17) defined by the seal housing cover (3) and the impeller (1), and at least one opening gap (20) connecting said cavity and said pump chamber. Furthermore, said opening gap (20) has a first flow area when the impeller (1) is in the first position, and a second flow area bigger than said first flow area when the impeller (1) is' spaced apart from said first position.

Abstract: The invention relates to a method for the monitoring of a plurality of at least three electrical lighting bodies of the same design, comprising a. Imposition on the plurality of lighting bodies of at least one supply signal from at least one ballast device, b. Reading out of at least one parameter for each of the individual lighting bodies in each case, c. Forming of at least one reference value from at least some of the parameters read out from the different lighting bodies, d. Comparison of the reference value with the parameter of each individual one of the lighting bodies, e. Generation of a signal for each lighting body of which the parameter exceeds a specified deviation from the reference value.

Abstract: In a first aspect the invention relates to an intake device (3) for creating a uniform flow of liquid entering a pump (4), which flow of liquid is free from rotation and swirls about the inlet of said pump. The inlet device (3) comprises an inlet section (11) having an orifice (14) and a decreasing cross section area seen in the direction from said orifice (14) for gradually accelerating a flow of pumped liquid, a redirection section (12) for redirecting the flow of pumped liquid from a mainly horizontal direction to a mainly vertical direction, and an outlet section (13) arranged to be connected to an inlet (6) of a pump (4). The device is characterized in that at least a part of a circumferential wall edge of said inlet section (11) extending around said orifice (14) comprises a bevel (17). In a second aspect the invention also relates to a pump station comprising such an intake device.