A pressure transfer device for an inverse osmosis fluid treatment installation comprising at least one filtration unit. The device comprises a piston that is movable in translation in a cylinder, where the piston comprises a central part and an annular part, and where the cylinder comprises a first cylinder receiving the central part of the piston and a second cylinder receiving the annular part of the piston.
F04B 9/107 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
Installation for treating fluids by reverse osmosis comprising: a filtration module (2), a pump (4), and at least one pressure exchange unit (3) with a movable interface (M) moving freely according to the fluid flows passing through a cylinder (31). The pressure exchange unit (3) includes a means for detecting the position of the movable interface (M), a regulating valve (5) that is positioned on a low-pressure fluid inlet duct (f3) for the fluid to be treated, and a rotary valve (7) that is in fluidic communication with the cylinder (31), wherein said rotary valve (7) comprises an inlet duct (s1’) that is connected to the concentrate inlet duct (s1) and an outlet duct (s2’) that is connected to the concentrate outlet duct (s2), and wherein one or more of the regulating valve (5) and rotary valve (7) is controlled by the means for detecting the position of the movable interface (M). The inlet (s1') and outlet (s2') ducts coincide with an internal surface (72) inside the valve (7), said internal surface (72) being planar, and said valve (7) comprising a rotary device (71) having an obturating surface (73) that is parallel to said internal surface (72).
F04B 9/107 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
F16K 3/04 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor with pivoted closure members
F16K 11/074 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with pivoted closure members with flat sealing faces
3.
VOLUMETRIC PRESSURE EXCHANGER FOR A SEAWATER DESALINATION PLANT AND DESALINATION PLANT
Volumetric pressure exchanger comprising at least one unit for pressure exchange with a hollow cylindrical body, a piston sliding in said body, said piston comprising a piston crown separating the inside of said cylindrical body into a downstream chamber and an upstream chamber, said piston comprising a rod arranged on the downstream chamber side and passing through said downstream chamber, said downstream chamber being equipped with a device for admitting and delivering water for treatment, said upstream chamber being equipped with a three-way rotary-slide valve, said rotary slide being rotated by motorized drive means, said valve comprising a pressurized-liquid supply orifice, a discharge orifice for said liquid, and an opening communicating with said upstream chamber.
F04B 9/117 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other
The invention relates to a water treatment facility comprising a water filtration module (15), a pump (27, 32) comprising a pumping module, a motor (10, 40), and a system for driving the pump by means of the motor. The pumping module comprises two bodies (52, 53) defining two cylindrical cavities (54, 55), two pistons (56, 57) that are slidably mounted into the cylindrical cavities, two rods (58, 59) that are rigidly connected to the pistons, two connecting rods (60, 61) that are hinged to the rods (58, 59), and a mechanism for rotatably mounted driving about a rotational axis (50) that is perpendicular to the longitudinal axes (62, 63) of the cylindrical cavities. The connecting rods are hinged to the driving mechanism about a common hinging axis (64) that is parallel to the rotational axis (50) of the driving mechanism.
The invention relates to a valve (24) comprising: a body (40) defining a cavity and provided with a first opening (60) that makes it possible to feed water into the cavity, a second opening that makes it possible to discharge water from the cavity, and a third opening that makes it possible to connect the cavity (41) with a chamber; a stopper (49) that is rotatable inside the cavity, the stopper comprising a depression (77) on the outer surface (90) thereof that contributes to the definition of a passage enabling the flow of water between the first and third openings in first angular positions of the stopper and moreover enabling the flow of water between the second and third openings in second angular positions of the stopper; a sealing device that makes it possible to ensure a sealed stopping of the first opening (60) by means of the stopper in said second angular positions of the stopper; and a second sealing device that makes it possible to ensure a sealed stopping of the second opening by means of the stopper in said first angular positions of the stopper.
F16K 5/04 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfacesPackings therefor
F16K 11/085 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
The invention relates to a valve (19) comprising a body and a shutter (18) mounted such that it can move inside the body, the body comprising a first shell (20) and a first liner (21) made of plastic covering the internal face of the first shell and delimiting a first cavity (38). The body further comprises a second shell (64) and a second liner (51) made of plastic covering the internal face of the second shell and delimiting a second cavity (66) which communicates with the first cavity via an opening (56). The cavities extend along two respective oblique longitudinal axes (26, 39), the liners are connected by a sealed connection, and the shutter is mounted such that it is translationally mobile in the first cavity between a position in which the valve is closed and a position in which the valve is open.
The invention relates to a pipe for transporting fluid, comprising two ducts (19, 222) butt-connected by one of their respective longitudinal ends, wherein each duct comprises an outer wall or casing (20) and an inner wall or jacket (21) secured to the outer wall. Each duct comprises an anchoring structure (67, 229) secured to the outer wall of the duct, and also a toroidal sealing member protruding longitudinally and radially with respect to the outer wall of the duct. The pipe comprises a connecting structure (230) comprising an inner wall and an outer wall, which is secured to one of the anchoring structures, and the inner wall of which is in contact with the protruding sealing members in order to provide the sealed connection of the ducts. The connecting structure is arranged such that it can slide around the respective ends of the two ducts, between the two anchoring structures, in order to connect the two ducts together or separate them, and the pipe comprises removable linking means (233) linking the two anchoring structures.
patents