Abstract: A system is provided to control fluid flow in a wastewater treatment system through wastewater level manipulation. The wastewater treatment system may include a wastewater treatment plant connected to a plurality of pump stations by a main. Each of the plurality of pump stations may include a wet well with a pump therein. The system may include a central server in communication with a sensor to sense a level of wastewater within the wet well. The pump may be automatically moved to an on position when the level of the wastewater in the wet well is at or above a first level and may be automatically moved to an off position when the level of the wastewater in the respective wet well is at or below a pump cutoff level. The central server may systematically manipulate the first level to selectively set the level of wastewater within the wet well.

Abstract: A liquid dispensing mechanism adapted to achieve an increased inflow and an increased outflow rate and consisting of an inlet line adapted to receive liquid from an external reservoir, and adapted to release aid liquid via an outlet line, said mechanism comprising a pressure chamber adapted to store liquid and provide liquid level to fall or rise as a function of pressure, before release; a buffer chamber adapted to connect with said pressure chamber by means of non-return valves, and further adapted to store liquid before it flows into said pressure chamber, in order to increase flow coefficient of inlet line; float member in said pressure chamber, adapted to sense level of liquid in said pressure chamber by means of position of said float member; multiple valve actuator assembly adapted to actuate a pre-defined configuration of valves, with a time-delay between engaging or disengaging subsequent valves, for controlled engaging or disengaging pressure in a predetermined format; snap action valve actuating me

Abstract: Reductions in energy consumption and maintenance requirements for operating a wastewater treatment plant are achieved by controlling the operation of pumps at pump stations along a force main in a systematic fashion. The operation of the pumps is controlled to manage the flow of wastewater along the force main to minimize energy consumption, to eliminate sediment, to manage peak pressures encountered by smaller pumps and to avoid septic conditions.

Abstract: A condensate pump includes a condensate reservoir, a liquid level float sensor operable to sense a liquid level within the condensate reservoir, and a pressure/vent valve including a pressure source, a pressure vent, and a primary piston slidably supported in a primary cylinder and sliding in the primary cylinder responsive to the liquid level sensor. A secondary piston is slidably supported in a secondary cylinder and moves responsive to a movement of the primary piston between a first secondary-piston position wherein the pressure source is in communication with a gas space of the condensate reservoir and the pressure vent is isolated from the gas space, and a second secondary-piston position wherein the pressure source is isolated from the gas space and the pressure vent is in communication with the gas space. An aperture in the primary piston and passages may also be provided to prevent build-up of gas pressures and maintain pressures in preselected regions within the pump at atmospheric pressures.

Abstract: The invention pertains to a device and method for generation of electrical power from sea waves, with either simultaneous or no desalination of seawater. The device comprises a seaborne portion and a shore-side portion. The seaborne portion of the device comprises a float, an anchor and a pumping mechanism. Seawater and air are drawn in and pumped through pipes and respectively to a shore-side compressor system. The compressor system is adapted to provide pressurized water of constant pressure to the next stage, which is either the desalination assembly through which potable water is produced using the reverse-osmosis method or the water-motor, which drives a generator that provides electrical power or both.

Abstract: An air driven liquid pump includes a reservoir, a liquid inlet aperture extending through the reservoir wall for fluid coupling to a liquid inlet duct, a liquid outlet aperture extending through the reservoir wall for fluid coupling to a liquid outlet duct. The liquid outlet aperture is in fluid communication with an outlet level inside the reservoir chamber located below the liquid inlet aperture and corresponding to a predetermined lower threshold value of the volume of the liquid within the reservoir chamber. The liquid pump also includes an air aperture extending through the reservoir wall for pneumatically coupling the reservoir chamber with the atmospheric air located exteriorly to the reservoir, a liquid inlet valve operationally coupled to the liquid inlet aperture and an air valve operatively coupled to the air aperture.

Abstract: The phase of this process is done by the functionality of the perforated lower stem, which due to the fact that its internal conduit is able to connect the lower bellow in an alternated way, first to the tubing and after, to the casing. This is possible due to the fact that it is assisted by: a) a window that communicates the casing with the tubing when the lower bellow is open, and b) sealing packing installed in the lower stem to isolate the casing pressure, in order that the lower bellow can register only the tubing pressure when it is in closing position.

Abstract: A pump includes a valve mechanism having an opened position and a closed position. The pump further includes a spring assisted mechanism for selectively moving the valve mechanism between the opened position and the closed position, and a fluid detector for detecting the level of a pumping fluid. The fluid detector is pivotally connected to the spring assisted mechanism and has a first range of pivotal travel and a second range of pivotal travel. The fluid detector further engages a spring of the spring assisted mechanism only at one portion of the first range of pivotal travel, and engages the spring of said spring assisted mechanism only at one portion of the second range of pivotal travel. The fluid detector is disengaged from the spring of the spring assisted mechanism at all other portions of the first range of pivotal travel and of the second range of pivotal travel.

Abstract: A motive pump assembly comprising a hollow housing having an inlet valve and outlet valve for a fluid to be pumped, an inlet valve for a motive fluid operatively between open and closed positions, a vent valve and means for simultaneously opening and closing the inlet valve and vent valve for the motive fluid, and a float and over center linkage mechanism operatively connected to said valve actuating means, whereby the mechanism snaps over center when the float is located at upper and lower limit positions thereby producing a pumping action of fluid to be pumped through the housing and positive stop means ensuring over center tripping action of the linkage when the float is at opposing upper and lower limit positions.

Abstract: A fluid evacuation and expulsion system, having a tank having a tank port, a top, a bottom, and an internal volume defined between the top and bottom, also having a pump having a pump inlet and pump outlet, and having a valve assembly having an actuation lever. A conduit is connected to the tank bottom for allowing fluids to enter and leave the tank. The valve assembly is connected to the pump inlet and pump outlet, as well as the tank port and an environment port. The actuation lever of the valve assembly manipulates four ganged valves which allow the system select between an evacuation mode wherein air is pumped from the tank through the tank port to draw fluids into the tank through the conduit, and an expulsion mode wherein air is pumped into the tank to expel fluids from the tank through the conduit.

Abstract: A pump apparatus for pumping undergound fluids from a well. The pump includes inner and outer chambers, and a float slidable within the outer chamber. A source of compressed air is directed to a valve on the pump. The valve controls the flow of the compressed air into the outer chamber during the pumping cycle, and also controls the opening of a vent during the intake cycle. The float, while sliding up and down within the outer chamber in response to the fluid level within the chamber, activates the valve to begin the pumping of fluid when the chamber is full. When the chamber is empty, the float activates the valve is turn off the compressed air.

Abstract: A pump of extremely simple manufacture, requiring no maintenance, is made up of a tubular body (1) closed at each end by end pieces (10a and 10b), orifices (15a and 15b) of which are respectively connected to a pneumatic control circuit (4) and to the circuit of liquid in circulation (3). A piston (2) circulates freely within the tubular body, driven by an overpressure or an underpressure appearing in the upper chamber (17a) and controlled by the pneumatic control circuit. The displacement of the piston brings about the filling and emptying of the lower chamber (17b), thus permitting the pumping of a liquid. This type of pump, of universal use, needs only a connection to a compressor (40) and to a vacuum pump (41) for its running, and these two elements may be common to a great number of such pumps.

Abstract: A pressurized air pumping apparatus for pumping for example drilling mud and like viscous or slurry materials comprises a fluid receiving sump tank having an upper inflow opening and a valve seat at the opening. A discharge conduit at the lowermost portion of the sump tank discharges fluid to be pumped therefrom. A source of compressed air is provided by pressurizing the sump tank and a vertical conduit enters the tank and introduces pressurized air into the interior of the sump tank with the vertical conduit providing a discharge port for entering the compressed air into the sump tank. A valving member is movably mounted in preferably a sliding fashion within the sump tank upon the vertical conduit with the valving member sealing the conduit discharge port in the normal inoperative state while sump tank is receiving by gravity flow for example inflowing fluids to be pumped.

Abstract: A slurry pump including a pressure tank with an inlet and a lower outlet and having a pneumatically operated, inwardly opening closure at the inlet and a hinged, outwardly opening door at the outlet swingable between opened and closed positions. An external source of air under pressure hydraulically shuts the closure and pressurizes the tank, forcing a semi-liquid slurry such as liquid manure contained within the tank through the outlet and into a duct leading to a lagoon or the like. A slurry level sensor shuts off the supply of air to the tank when the slurry reaches a given level in the tank.