Some embodiments include an activity pool comprising: a pool and an axial flow pump. The pool may comprise an activity pool reservoir comprising a top opening and a depth; and a water reservoir comprising a depth greater than the usable pool depth. The axial flow pump may be disposed within the water reservoir. The axial flow pump may comprise: a water intake disposed near or at the bottom of the axial flow pump; a water flow channel fluidically connected with the water intake; a motor; an impeller disposed at least partially between the water intake and the water flow channel; an impeller shaft coupled with the motor and the impeller, the impeller shaft extending from the motor to the impeller though the water flow channel; and an output disposed between the motor and the water flow channel, the output fluidically connected with the water flow channel and the usable pool.

Some embodiments may include an activity pool comprising a pool, an activity deck, a plurality of screw jacks, and an axial flow pump. In some embodiments, the activity deck may be disposed within the activity pool reservoir and may be moveable in a vertical direction between at least two configurations. In some embodiments, the plurality of screw jacks may be coupled with a bottom side of the activity deck, the plurality of screw jacks may move the activity deck between the at least two configurations. In some embodiments, the axial flow pump may be disposed within a water reservoir and may force water through the axial flow pump and into a usable pool.

Some embodiments include an activity pool comprising a pool volume having a top opening and a depth; and an activity deck disposed within the pool volume, the activity deck is moveable in a vertical direction between at least two configurations, the activity deck comprises a composite material; and a plurality of screw jacks coupled with the activity deck, the plurality of screw jacks move the activity deck between the at least two configurations, the plurality of screw jacks being coupled together with a one or more motor that engages each of the plurality of screw jacks via one or more worm gears.

A pump for immersion in a fluid includesan inductor having guide vanes to induce linear fluid flow; a rotor with a central, flared body, this rotor being downstream of the inductor relative to the direction of fluid circulation; a helical blade provided around the central body; this helical blade having a flared external profile and having turns with an increasing winding pitch, and the internal casing volume being complementary to the flared helical blade, a casing around the rotor; a diffuser having blades making the flow of fluid linear and disposed downstream of the rotor to evacuate the fluid from the rotor; anda diffuser insert having blades and an outlet orifice with a diameter less than the inlet diameter of the diffuser insert, the blades directing the fluid from the diffuser towards the orifice to increase the orifice outlet pressure.

An axial flow pump for pumping a liquid has a motor. The motor of the pump is arranged such that the liquid to be pumped flows around the motor. No elaborate rotary leadthroughs of the pump shaft through the pipe system are needed. Furthermore, the bearings of the motor are lubricated by the liquid to be pumped, thereby avoiding risky oil lubrication. As a result, the axial flow pump is suitable for use in drinking water pipelines.

A cardiac pump having a turbine with internal blades, includes a pump designed to circulate a fluid, including a housing, and a turbine which is arranged in the housing and is designed to move rotationally relative to the housing. The turbine includes a body designed to move rotationally, a hollow central part which extends through the body from one side to the other and is intended to allow the fluid to pass through the turbine, and at least one blade that is positioned on the inner wall of the body, in the hollow central part, and is designed to circulate the fluid.

A pump features a two-part axial flow shaft having a static inner shaft portion and a rotating outer shaft portion; the static inner shaft portion having static diffuser vanes, and also having two shaft ends configured to affix to a frame of a pump so the static inner shaft portion does not rotate; and the rotating outer shaft portion having an outer portion configured to affix to a rotor of the pump to rotate the rotating outer shaft portion, also having rotating impeller vanes configured inside and coupled to the outer portion to move the fluid axially along the two-part axial flow shaft as the rotating outer shaft portion axially rotates in relation to the static inner shaft portion.

A fluid moving system and apparatus for an electric submersible pump (ESP) is described. A fluid moving system includes a gas separator between an electric submersible pump and an ESP motor, the gas separator including a separation chamber including an impeller and a diffuser, the impeller including a plurality of regressively pitched main vanes interspersed between a plurality of mixer vanes, each of the plurality of main and mixer vanes extending along the hub with a positive slope and a concave top face, and a diffuser, the diffuser including blades extending along a diffuser body in a sloped direction substantially opposite the slope of the impeller main vanes, the blades having a concave top face and a regressive pitch that mirrors the pitch of the impeller main vanes, wherein the impeller vanes and diffuser blades serve to homogenize the well fluid while facilitating downstream movement.

A submersible pump comprises a rotational assembly and a rotational assembly housing. The rotational assembly has a plurality of in-line flow inducing sections. A centerline longitudinal axis of each of the flow inducing sections extends colinearly with a rotational axis of the rotational assembly. A downstream end portion of a flow pressurizing section is engaged with an upstream end portion of a rotational flow amplification section. A downstream end portion of the rotational flow amplification section is engaged with an upstream end portion of a flow outlet section. The rotational assembly housing has an interior space extending along a centerline axis of the rotational assembly housing. The rotational assembly is disposed within the interior space of the rotational assembly housing. The rotational assembly and the rotational assembly are jointly configured for causing the rotational axis to extend colinearly with the centerline longitudinal axis of the rotational assembly housing.

A multiphase pump for conveying a multiphase process fluid includes a pump housing, a stationary diffuser, a rotor and swirl brake. The rotor is arranged in the pump housing and is rotatable about an axial direction, the rotor including a pump shaft and an impeller fixedly mounted on the pump shaft. The stationary diffuser is arranged adjacent to and downstream of the impeller. The impeller includes a blade with the blade having a radially outer tip, and a ring surrounding the impeller and arranged at the radially outer tip of the blade. A passage is between the ring and a stationary part configured to be stationary with respect to the pump housing, the passage extending in the axial direction from an entrance to a discharge. The swirl brake is disposed at the passage, and configured and arranged to brake swirling of the process fluid passing through the passage.