FI86999B - Device for collecting oil from the water surface - Google Patents

Description

1 8 6 5> S- '>

Device for collecting oil on the surface of water

The present invention relates to a device for collecting oil on the surface of water, which device is self-floating and comprises a body, floats in the circumferential area of the body and pumping means in the middle of the body for drawing contaminated water around the device towards the pump. 10 storage tanks and a purified water drain pipe below the water surface.

It is already well known to use collecting members with bristles which are in constant motion, lifting the oil 15 up from the water and the surface of the water, and from which the oil is then separated and recovered. It is known to place such oil collection means in various ways on ships which, when moving through oil-contaminated water, collect oil from the water.

20 Patent No. 130440 also discloses a device of the type mentioned in the introduction, which is thus intended to be immobilized in a confined water space, such as a harbor basin or the like, for cleaning it from oil. Known • ·; ·. the device comprises a large plate, the edge of which is just below the surface of the water • * · j. (. and the water flows over the edge inwards towards the pump • · * 1 in its open, lower central part. The oil on the surface of the water is directed One problem with such oil skimmers, or "skimmers", is that the oil / water interface is vague, especially under flow conditions, so that the oil / water interface is indeterminate. separation from water is difficult.

In other words, a lot of water is also pumped out with the oil, and on the other hand, there is still a relatively large amount of oil in the water discharging from the device. With this in mind, the • · ”*” 35 buoyancy height should also be precisely adjusted in each case, which ϊ ^:]: is tedious.

• · · • t • · • ·· 2 8 6 9 S 9

The object of the present invention is to provide such a collecting device in which the water of 51 grams can be efficiently directed to the collecting members and in which e.g. height adjustment is not necessary, i.e. the device can be easily and quickly put into operation.

In order to achieve these objects, the invention is characterized in that, in a manner known per se, collector-like spaces are connected to the collecting means consisting of bristles and their cleaning means, from inside of which water is pumped out to create a flow through the collecting means.

The pumping means are preferably arranged so as to direct the outgoing water flow substantially downwards. The suction pipes of the pumping members 15 are connected to enclosed spaces, e.g. immediately behind the collecting members passing through the water flow.

The invention and its other features and advantages are described in more detail below in the form of an example and with reference to the accompanying drawings, in which Figure 1 shows a side view of a device according to the invention, • ·. *: Fig. 2 shows the same device seen from above, t ·: '·· Fig. 3 shows the body of the device seen from the side, ·· * • \ ϊ25 Fig. 4 shows the body of the device seen from above, Fig. 5 shows the same body seen from the end, and Fig. 6 shows the flow of oil and water in the device.

• «· t · t • · · • ·

The body or frame of the device shown in the figures is formed in the form of a rectangle rounded at two angles. horizontal pipe 1 and 2 and the associated \ * connecting pipes 3. Reference numeral 4 denotes an oil tank in the middle of the frame, welded together from metal plates, open at the top.

. '.35 • · · *' * An oil pump 5 is placed in the oil tank, from which an outlet pipe 6 leads upwards, to which the outlet hose is intended to be connected. In addition, there is a bracket 7 at the top of the pump or tank, from which the entire device can be lifted, for example by means of a crane.

Below the oil pump there is an outlet pipe 8, inside which there are pumping means in the form of a propeller 9, which direct the flow of water downwards. The water flow hits the cone 14 which spreads the flow to the sides.

the oil collecting members are formed in a manner known per se from 10 adjacent loops 11 comprising successively mounted pieces with bristles which, as the loops rotate, continuously raise the oil from the water. These collecting members are, for example, those described in EP-128729.

The oil is separated from the collecting members by scraper members 12, which may be, for example, those described in patent EP-122091. The oil separated by the scraper members 12 spills down by itself into the tank 4.

20

Two pipe coils 10 are connected to the water pumping members, which in turn are connected to housings with front and rear • ·. *: the front page collection loops 11 form. When water is pumped: ‘·· through the device, a flow is thus created through the collecting members 11.

• i · • V25 Thus, contaminated water flows continuously towards the unit and the oil is removed by means of collectors.

··· • · · • · ·

Reference numeral 13 denotes four floats located at the corners of the frame, for example made of sheet metal. Imaginary. ·. j30 does not indicate the capacity of the oil pump and water pump.

• M

λ / man feed. These pumps can preferably be driven by hydraulic motors, the supply hoses of the motors being pulled out of the upper part of the tank 4 to a source of compressed oil on land or on board.

::% 35 • · ·

Finally, Figure 6 shows the flow of water and oil.

• · - oil is marked with black arrows, mixed oil with shaded arrows and purified water with darkened arrows.

It is clear that the presented structure can be modified in a mo-5 way within the scope of the idea of the invention. For example, the device may have four collection units oriented in four different directions. The collection units or bodies may be of any known type.

• · »· ·· • ·» · •·· m · «· • · · • · • ···» • · ♦ · ··· • · 1 2 3 • ·> • · • · · · · • · • · • · · • · · 9 «99 • · 9 • · · 1 · • · · 999 999 • 1 2 • 9 3 m 9 · 9 9 9 9 9 9 099 9 9 mo

Claims (7)

5 86999 X. Apparatus for collecting oil on the surface of water, which apparatus is self-floating and comprises a body (1, 2), floats (13) in the circumferential area of the body and pumping means (9) in the central area 5 of the body to draw contaminated water around the machine towards the pump , the device being provided with oil collecting members (11, 12), a collected oil storage tank (4) and a purified water outlet pipe (8) located below the surface of the water, characterized in that in a manner known per se, the bristles (11) and their cleaning means (12) ) are connected to enclosure-like spaces within which water is pumped out to provide a flow through the collecting members (11). Device according to claim 1, wherein the collecting members (11) consist of adjacent moving loops containing brush pieces, the lower ends of which are in water and which together form a collecting unit, characterized in that the device has at least two opposite collecting means 20. units between which the pumping members (9) are located. Device according to Claim 1 or 2, characterized in that it comprises a substantially rectangular open frame (1-3) with floats (13) at the corners and pumping elements in the middle. (9) are located. M ·· 999 9 9 9 9 9 9 *. Device according to Claim 3, characterized in that the oil collecting tank (4) is located in the central part of the body above the pumping elements (9). Device according to Claim 1, characterized in that it has second pumping means (5) for pumping oil. out of the tank (4). 999 \ 35 • · · Device according to Claim 5, characterized in that the pumping elements (9, 5) are driven by a hydraulic motor. 6 86999 Device according to claim 1, characterized in that it has at least one attachment point (7) for a crane hook or the like. 5