FR2761669A1 - Movable floating device for distribution, supply and emptying of liquids in pool or tank - Google Patents

Abstract

The movable float enabling the distribution of liquids in a tank (1) comprises a movable floating overflow (3). The device is operated automatically by gravity and does not require any external energy. The movable overflow floats in the liquid by floats (4). It has an outlet pipe (5) enabling the evacuation of the liquid from the tank. The level of the overflow is adjusted by changing the position of its centre of gravity and its outlet neck (7) is adjustable. Supply (A) and emptying (B) take place simultaneously.

Description

 The invention applies to liquid planes and more particularly to installations and works intended to contain liquids or products, mainly basins or tanks for storage and / or purification, but also manholes, discharge stations, channels.

The invention relates to the distribution, supply and disposal of liquids or products which can be charged, and sometimes consisting of mixtures of liquids of different densities, for example waste water containing oils and / or similar materials lighter than the 'water.

 These liquids or products can be, for example, a hydrocarbon spilled over a body of water, floating solid particles such as sawdust, leaves or suspended matter, or a liquid.

The invention aims to provide a simple, reliable and autonomous solution.

 Known devices consist of a fixed chute, a fitted orifice, a pipe or even an overflow, overhanging blade or drop.

Such devices have the drawback of supplying liquids or products, at a fixed height to the basin or tank, which causes disturbances, agitations, eddies, suspensions of solid materials, or even emulsions to the products or liquids already present. in the basin or the tank.

In addition, they do not allow an evacuation of liquids or products from the basin or tank or liquid plane.

Still other devices, such as skimmers or recuperators allow the evacuation of liquids or products, but not the supply of the basin or tank or liquid plane.

 The invention makes it possible to supply liquids or products to the basin or tank or liquid plane at a variable height, avoiding disturbances to the liquids or products present, and also makes it possible to remove, simultaneously or not, level products or liquids. and of variable layer thickness, by gravity without external energy supply or by pumping or by mechanical means (9).

 The characteristics and advantages of the invention will appear on reading the following description, given by way of example and with reference to the appended drawings, schematic, indicative, non-limiting and given by way of example, and subject to different variants of realizations and applications: - fig. I schematically represents a sectional view of the device according to the invention, - FIG. 2 schematically represents a top view of the device according to the invention, - FIG. 3 schematically represents a sectional view of the device in operation during supply (A), - FIG. 4 schematically represents a sectional view of the device in operation during evacuation (B), - FIG. 5 schematically represents a sectional view of the device according to a second embodiment of the invention, - FIG. 6 schematically shows a sectional view of the device according to a third embodiment of the invention.

 The device shown schematically and for information, Figures let 2, consists of a floating mobile assembly intended to supply the basin or tank (1) with liquids or products, the same floating mobile assembly serving for the evacuation of liquids or produced through the discharge chute (7) and the discharge conduit (5).

 The device comprises: - a supply duct (6) for the basin or tank (1), - a support (2) connected to the supply duct (6), - a mobile weir (3) with flotation means (4 ), - an evacuation chute (7) linked to the mobile overflow (3), - an evacuation conduit (5) connected to a storage tank not shown - an evacuation means operating by gravity or pumping or mechanical means (9).

 The operation of the device according to the invention takes place as shown by way of indication and without limitation in FIGS. 1,2, 3 and 4.

 The floating floating weir (3) and the support (2) are slidably fitted into one another.

The mobile and floating weir floats in the level liquid (hl), and the adjustment of its buoyancy is such that the level of the mobile weir (3) is at a desired level of the surface layer of the basin liquid or tank (1) (Figure 1).

 The supply (A) of liquid to the basin or tank (1) is done through the supply duct (6) and the mobile floating weir (3) (Figure 3).

The evacuation (B) is done by the evacuation chute (7) adjusted so that it floats at a desired level (h3), by modifying the position of the center of gravity, so that the desired layer of liquids or products to be evacuated flows in the evacuation duct (5), by gravity, in a pouring blade of variable height according to the layer of liquid to be evacuated. This overhanging blade gives priority to the level layer (h3) of the liquid or product.

When the level of the liquid or product in the basin or tank (1) varies, the mobile weir (3) which floats also varies, and the heights of supply and discharge also vary.

 Such a device thus makes it possible to supply liquids or products at a variable height, and to evacuate simultaneously or not simultaneously liquids or products located at a layer of variable level. It works reliably and autonomously, and does not require external energy.

 A second embodiment of the invention, FIG. 5, shows a device where the functions of the support (2) and of the supply conduit (6) are ensured by a flexible pipe (8).

 A third embodiment of the invention, Figure 6, shows a device where the support (2) is provided by a part of the basin (1).

 It is also possible, without departing from the invention, to produce a device with a supply (A) but without evacuation - the chute (7) and the evacuation duct (5) are then eliminated, or even a device with a feed (A) and with an evacuation (B) of a deep layer of product - the level of the chute (7) is then located much lower than the level of the mobile weir (3).

 Thus, the invention is not limited to the mode of operation and embodiment which has just been described and shown by way of example, and it is possible, without departing from the scope of the invention, to modify certain provisions or replace certain means by equivalent means, or even replace certain elements by others, capable of ensuring the same technical function or an equivalent technical function.

Claims (10)

1 - Mobile floating device allowing the distribution of liquids or products in a basin or tank (1) or a liquid plane, characterized in that it comprises a mobile floating weir (3). 2 - Device according to claim 1, characterized in that the device operates by gravity, is autonomous and does not require external energy other than that provided by the liquid or product transferred itself. 3 - Device according to any one of the preceding claims, characterized in that the support (2) is provided by a part of the basin or of the tank (1). 4 - Device according to any one of the preceding claims, characterized in that the mobile weir (3) floats in the liquid using flotation means, of the float type (4), or only by its own physical characteristics - materials which compose it, a particular form. 5 - Device according to any one of the preceding claims, characterized in that the mobile floating weir (3) is equipped with an evacuation duct (5) making it possible to evacuate liquids or products from the basin or tank (1) or of the liquid plane .. 6 - Device according to any one of the preceding claims, characterized in that the transfer of liquids or products is ensured either by simple gravity, or by pumping delivery, suction, or even by mechanical means (9). 7 - Device according to any one of the preceding claims, characterized in that the level of the mobile overflow (3) is adjustable by changing the position of the center of gravity. 8 - Device according to any one of the preceding claims, characterized in that the level of the discharge chute (7) is adjustable. 9 - Device according to any one of the preceding claims, characterized in that the supply (A) and the discharge (B) take place simultaneously. 10 - Device according to any one of the preceding claims characterized in that it comprises a movable weir (3) floating and a support slidably interlocked in one another.