Abstract: A method and apparatus for improving the production efficiency of a well and preventing gas lock. The apparatus is a downhole pump and comprises a barrel, a reciprocating plunger and a body having a plurality of inlet valves. The apparatus does not require outlet valves. The body and inlet valves are positioned above the barrel and plunger, thus eliminating gas lock. Fluids enter the body through the valves and, during upstrokes of the plunger, are forced up the tubing string to the surface equipment. Modularity of the components permits pump components to be changed as the productivity of the well fluctuates and also allows production of more fluids with a smaller casing. The invention prevents gas lock by permitting gasses to escape between a sliding valve and a valve rod connected to the plunger. Additionally, an exit valve sealably engages the valve rod, which forms an aperture. During operation of the pump, the gasses escape through the aperture in the valve rod and rise up the tubing string.

Abstract: The scum removal system for liquids is adaptable to wastewater treatment facilities, aquaculture facilities, oil spills, and/or other environments where the removal of a thin, buoyant layer of material from a liquid surface is desired. The system incorporates a geyser pump having one or more inlet pipes, with the inlet pipe(s) collectively having a larger diameter than the discharge pipe. This assures that the volume of water in the inlet pipe is always less than that in the discharge pulse, thus assuring that a steady, constant flow of liquid flows into the inlet opening to assure a uniform inertial flow of the floating contaminants into the inlet. The top of the inlet pipe(s) may be vertically adjustable for variable liquid level. The geyser pump may be submerged within the liquid or may be installed external to the liquid tank with the submerged inlet pipe communicating with the external pump.

Abstract: A Water and Wastewater Treatment Aerated Mini-Dosing air-lift pump System and filter housing, that replaces the conventional dosing pump, controls and additional Tank. It is adaptable to all access ports and uniquely smaller than a 3? inspection port and is integrally positioned in an existing or new raw water pretreatment or pump tank. It aerates the source pool thereby mitigating: H2SO4 gases, odors and source pool BOD5. The system communicates with an above ground aerator and optional controls and in it's plurality supplies dissolved and free oxygen to the pump, housing, effluent and the source pool, with surge protection and scum mitigation. Mini-metering and, low pressure, extended cycle durations increase the average microbial production balance and microbial Ratio to nutrients BOD. The raw sewage tank no longer requires gas removal prior to inspection due to oxic and anoxic microbial processes that mitigates H2SO4 gases.

Abstract: A pump for pumping pulp, comprising a first impeller (12) for pumping the pulp in fluidized state, and a gas evacuation pump (23) of liquid ring type comprising a pump housing (24) with a chamber (25) and a second impeller (26) rotating therein for evacuating gas collecting in front of said first impeller (12) via a system of channels (20, 21, 22), said impellets (12, 26) being mounted on the same shaft (4) for common rotation. According to the invention the chamber (24) of the gas evacuation pump (23) containing a rotating liquid ring (29) is defined circumferentially by an element (40) which is movable in relation to the second impeller (26) and the axis of rotation (5) thereof by means of an actuator (48, 50, 51), said element (40) being adjustable by the actuator (48, 50, 51) in three different operating positions dependent on the operating conditions prevailing for the pump.

Abstract: A drainage pump (10) in which the portion near the entrance of the impeller (12) in the suction tube (11) is open to the set lowest suction water level (L.W.L.) through an air intake pipe (15), so that air is introduced into the portion near the entrance of the impeller (12) when the suction water level (W.L.) is lower than the preset lowest suction water level. An air intake hole (14) may also be provided through the water intake suction tube (11) near the impeller.

Abstract: A vertical shaft pump to be disposed in a pump pit comprises a pump casing having a suction opening, and an impeller disposed in the pump casing below a position corresponding to the lowest water level in the pump pit below which the pump starts to suck air through the suction opening during operation. A series of intake ports are provided in the pump casing below the impeller with equal intervals in the circumferential direction of the pump casing. These intake ports act to introduce atmospheric air into the pump casing through intake pipes when the pressure at the intake ports is lowered below the atmospheric pressure.

Abstract: According to the vertical pump of the present invention, a reverse U-shape air suction passage is connected to a suction casing which communicates with the impeller chamber, and a U-shape branch passage is branched from a hanging portion of the air suction passage. According to this vertical pump, when the water level is raised in the air operation state, air suction into the suction casing through the air suction passage and the branch passage is stopped when the water level reaches the pumping starting water level, so that the operation of the vertical pump may be changed to the water pumping operation. Where the water level is lowered in the state of water pumping operation, air suction into the suction casing through the branch passage and the air suction passage may start at the pumping stopping water level which is lower than the pumping starting water level. Accordingly, the operation of the vertical pump may be changed to the air operation.

Abstract: A submersible rotary impeller fish pump augmented by the release of large volumes of pressurized air into the pump's discharge stream during pump operation enables the pumping of fish or other water-borne articles to the same or greater heights at materially lower impeller speeds and with less impeller damage than the same pump unaided.

Abstract: The apparatus relates to a jet pump or apparatus which displaces a main fluid by a pressurized driving liquid. The apparatus has a duct to receive the main fluid, and a driving liquid manifold cooperating with the duct to receive the pressurized driving liquid. First and second sets of inwardly facing jet nozzles are disposed adjacent a transverse plane of the duct and penetrate the duct side walll to pass the driving liquid into the duct at a mixing portion of the duct having a constant cross-sectional area. The first and second sets of jet nozzles are inclined at angles to the duct axis so that the first nozzles are inclined at a greater angle than the second nozzles. Efficiency of the pump is improved by admitting pressurized gas into the duct and providing the pump with a diverging outlet portion to act as diffuser.

Abstract: An electric motor, for instance for a hydraulic elevator, is entirely immersed within a liquid such as oil, and is provided with a flywheel. A drawback of this kind of electric motor is that the flywheel, rotating in oil, brakes the rotation of the motor. In the present electric motor the flywheel is enclosed in a housing and an air pipe extends to the housing so that by action of centrifugal force air is drawn into the housing, and liquid in the housing escapes from the housing through a discharge aperture when the motor starts.

Abstract: A device for elevating liquids in which liquid is raised in a pipe under the action of a pressure difference which is smaller than a pressure difference of a solid liquid column having a height equal to a height of elevation.

Abstract: A fluid-raising apparatus includes a compression chamber which receives liquid, from an elevated source, such that gas in the chamber is pressurized and used to lift fluid through a vertical conduit. When the chamber fills with liquid, a float lifts a drain plug so that draining commences automatically. The effluent passes through a discharge tube wherein, during draining, the liquid pushes on a piston. The piston, in turn, holds a liquid inlet valve closed until draining is complete.

Abstract: An article transfer pumping system combining the effects of a jet pump and an air lift pump to minimize article damage while increasing lift capability and overall system efficiency. Air lift pump placement adjacent the pump inlet aerates the rising column of water with articles such as fish, even large salmon, being raised by the jet pump, whereas jet pump placement adjacent the discharge end of the conduit increases pump efficiency.

Abstract: A system and method for producing earth formation fluids such as crude oil using a lighter oil to force the crude oil to the surface and thereafter removing the lighter oil by gas lift techniques. The well system includes spaced packers defining a production chamber in the well bore, a production tubing extending through the packers having check valves and ports for well fluids to flow into the chamber from below the packer while isolating the chamber from the pressure of production fluids in the production tubing. Power fluid tubing extends through the upper packer into the production chamber including spaced gas lift valves and gas flow means from the lowermost gas lift valve into the production chamber. Surface equipment is provided for pumping power fluid into the power fluid tubing string, introducing lift gas into the power fluid tubing string above the upper packer, and separating returned power fluid and lift gas.

Abstract: Skimmer apparatus for swimming pools and the like having a receptacle in which a skimmer basket is fitted. The receptacle provides a chamber into which pool water flows through the skimmer. Water is caused to flow into and through the receptacle by a connection within the receptacle to the makup water inlet of the pool. The inlet water discharging into the pool through the chamber of the receptacle and the flow of the water by an ejector effect causing flow through the receptacle thereby causing a substantial amount of the pool water to be recirculated through the receptacle although it is not recirculated through the conventional pool suction pump and inlet which operates to supply the inlet water pressure for activating the skimmer apparatus.

Abstract: A pumping system is described for pumping fluids, such as water with entrained mud and small rocks, out of underground cavities such as drilled wells, which can effectively remove fluids down to a level very close to the bottom of the cavity and which can operate solely by compressed air pumped down through the cavity. The system utilizes a subassembly having a pair of parallel conduit sections (44, 46) adapted to be connected onto the bottom of a drill string utilized for drilling the cavity, the drill string also having a pair of coaxially extending conduits. The subassembly includes an upper portion which has means for connection onto the drill string and terminates the first conduit of the drill string in a plenum (55). A compressed air-driven pump (62) is suspended from the upper portion. The pump sucks fluids from the bottom of the cavity and discharges them into the second conduit.

Abstract: Disclosed is a pumping system using a pneumatically powered, submerged pump for lifting high viscosity oil from a well. The pump includes a flexible, bag-shaped expansible member or "bladder" mounted within a surrounding housing. Pressurized gas is supplied from the well surface to the bladder through a supply line. An inlet check valve permits oil in the formation to flow into the housing when the bladder is collapsed. When the bladder is expanded or displaced by the gas, the oil in the housing is displaced through an outlet check valve into a flow line which extends to the well surface. A submerged control valve channels gas into the bladder to control the bladder expansion. The control valve also functions to permit the gas in the bladder to flow into a vent tube to control bladder deflation.In a modified form of the invention, oil flowing into the housing expands the bladder and gas supplied to the housing collapses the bladder.