Submersibly operable high volume and low pressure liquid transfer equipment

A liquid transfer facility as claimed in any one of the preceding claims of which the intake (22) to its housing (14), as operatively viewed, is from below under which circumstance the housing (14) is thus elevated above the floor of a vessel within which the facility is submersed, the intake (22) in the case of the stirrer being of smaller cross sectional area than the peripheral skirting of the wall of the housing (14) being axially arranged as regards the axis of rotation (32) of the stirrer (12) while the housing, when at least partly independently installable, incorporating elevating means (30) for elevating it above the floor of its location of installation.

A liquid transfer facility as claimed in any one of the preceding claims that is constituted to result in the housing (14) being open to the environment under circumstances of use by way of an open ended upwardly extending enclosure (18) rooting in the housing and of which the length is determinable in conjunction with the circumstance of use of the facility to the effect of maintaining the housing (14) sealed from above by way of a liquid seal despite the enclosure (18) being open to the environment with the enclosure extending suitably to also house the drive shaft (16) of the stirrer (12), as thus couplable to and independently rotatably suspensible from a non-submersible drive (36), against enclosure catching, the housing when removable while at least part is independent of the remainder of the facility, as thus in the form of an installation, while the enclosure (18) is of lesser diameter than the sweep of the stirrer (12), being constituted from a casing (26), as installable to a location of use, and a cover (34) from which the enclosure (18) extends to enable installation of the stirrer to the housing.

A liquid recirculation and transfer vessel layout (40, 60) also employable for the treating of liquid comprising

• a liquid transfer facility holding vessel (42) submersibly holding a high volume and low pressure liquid transfer facility (10) that comprises a rotor type stirrer (12) mounted to rotate in a horizontal plane and connected to an overhead drive (36) suitable to rotate it at a conventional stirrer type speed of rotation and a stirrer housing (14) of which the liquid intake (22) is non-overhead and within which the stirrer (12) is freely rotatably mounted while defining a liquid transfer zone (20) extending in a liquid flow promoting way between a liquid intake (22) mouthing in the a liquid transfer facility holding vessel (42) and a tangential liquid discharge (24), and
• a recirculation vessel (44) into which the liquid transfer facility (10) is arranged to discharge via a low elevation discharge port (48) owing to its discharge (24) being in adequate close vicinity of the port if not registering with it while provision is made for the gravitational return flow of liquid from the recirculation vessel (44) to the liquid transfer facility holding vessel (42) and to and from at least one of which vessels liquid required for treatment is conventionally chargable and treated liquid is removable.