| 摘要 |
A method is described for loosening and removing fouling material from surfaces lying under water with a washing tool in the form of a frame construction with a number of washing apparatus that are brought to the surface and which is made to spray out a watery cleaning fluid to loosen fouling material and clean the surface, at the same time as each washing apparatus rotates and a mixture of fluid and fouling material is transported away for further treatment, and it is characterised in that a washing tool is applied where each washing apparatus is in the form of a cup with integrated channels for supply of fluid to integrated spraying nozzles (60) for the fluid around the rim edge (41) of the cup, and with a central outlet at the top of the cup for removal of fluid and fouling material, and the cleaning is carried out as follows: the construction is brought to the surface with the rim edge of the cup(s) a distance (A) from the surface (10), - a suction (a fluid dynamic under pressure) is established in the outlet (43) from the cup(s), said suction contributes to pull water (68) from outside the cup, in under the rim (41) of the cup, into the cup and up through the outlet (43), - fluid is sprayed out through the nozzles (60) which make the cup(s) rotate and loosen fouling material from the surface, and the mixture of fouling material and water flows into the already established stream of water in towards the centre of the cup and up towards the top of the cup where the established suction is strongest, and - the mixture of fouling material and water is transported away for said further treatment (220). Furthermore, two embodiments of a washing apparatus are described for carrying out the cleaning, and also different applications of these. |
