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WO/2001/011149A1 |
The invention relates to a stepped rake (1) comprising a stepped double grate (2) which is arranged in a transversal manner to the direction of flow inside a rake entry and which has alternately fixed and moveable rake rods (3a, 3b). Sai...
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WO/2001/009438A1 |
The device is composed of two, horizontally aligned component parts, namely, fixed spillway subtending an angle of 60° and a pivotal wedged-shaped module residing at a specific and constant distance parallel to the spillway face. The we...
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WO/2000/068513A1 |
This invention relates to a method and a device for the separation of impurities in incoming waste water. The method according to the invention is characterized in that waste water containing impurities in the form of sand, gravel, stone...
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WO/2000/049852A1 |
A method and apparatus for flood irrigation including a plurality of flood plains (12) excavated at consecutively lower elevations. The flood plains (12) are sequentially flooded for a resident time period with a selected volume of water...
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WO/2000/049853A1 |
A method and apparatus for flood irrigation using a pump (14) to transfer water (28) from a water collection area (32) to a flood plain (31) containing potted plants (27) and using gravity to return the water to the water collection area...
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WO/1999/058768A1 |
A self-regulating tilting weir comprises a tiltable weir gate over which the water flows, the weir gate being hinged at its lower edge (3) to the base of a support frame (1) and counterbalanced by float means (4) located upstream of the ...
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WO/1999/057377A1 |
A spillway (10) for use in a sloped embankment (12) which defines a top (14) and a toe (16). The spillway (10) is adapted to dissipate the kinetic energy of water flowing downwardly from the top of the embankment (14) to the toe (16) the...
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WO/1999/050510A1 |
The invention relates to a revolving screening rack (1) comprising an endless screening belt (2) which can be driven and which is constructed by a plurality of screening elements (12). Said screening elements each have a plurality of elo...
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WO/1999/049145A1 |
A raked bar screen for a storm overflow comprises a grid of parallel spaced-apart bars (1) attached at their ends to a framework (2, 3, 14). A comb assembly (4, 5, 6) has teeth (5) which engage in the spaces between the grid bars (1). Th...
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WO/1999/042668A1 |
In a separating grid (1) for collection and removal of solid particles and objects (4) present in running water (2) and equipped with a separating unit (8) comprising alternate fixed and mobile grid bars (9 and 10, respectively), wherein...
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WO/1999/024680A1 |
The invention relates to a screen rake (1) for removing solids from a flow of waste water, comprising a driveable belt screen (2) for placing in the flow of waste water, said belt screen having two side link chains. Screen or filter elem...
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WO/1999/010232A1 |
A pylon servicing means comprising a carriage (11) having a first drive means (17) provided on the carriage (11), said first drive means (17) being adapted to engage the pylon (10) to enable the carriage (11) to be moved longitudinally a...
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WO/1998/058130A1 |
A fishway system includes a lock-type fishway (4, 8, 9) and in parallel relationship thereto a pipe or equivalent (20, 24, 25) and therein a turbine (23) for conducting the luring water therethrough and for recovering energy from the lur...
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WO/1998/056241A2 |
An apparatus for generating a current to guide fish includes a propeller (10), a device (12) to rotate the propeller, and a frame (14) to mount the propeller and the device to rotate the propeller. Fish may be guided from an intake area ...
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WO/1998/055699A1 |
The present invention relates to a grating cleaning device (1), which comprises a grating (2) and a motor-driven cleaning instrument (3), which cooperates with the grating by means of a rake-like cleaning instrument. According to the inv...
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WO/1998/050638A1 |
The invention relates to a stepped filtration device (1) for mechanically separating solids from liquids flowing through channels, gutters or pipes. The inventive device has numerous step bars (7') connected in a fixed grid (7) and numer...
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WO/1998/050132A1 |
A mechanically raked screen system is used for preliminary waste water treatment. A screen (2) is formed of a multiplicity of mutually parallel screen bars (14). The screen bars (14) are oriented substantially transversely relative to a ...
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WO/1998/038389A1 |
The invention relates to a method for draining solids in an effluent stream using a belt screen. It is mainly characterized in that the cross-section of the sieving elements in the belt screen is adjusted or controlled. The invention fur...
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WO/1998/033603A1 |
A bar screen cleaner (40) removes debris (41) from a screen (42) positioned in a channel (43) guiding a flow of liquid (46), solids (47) and the debris (41). A rake (67) has tines (68) for engaging the screen (42) to move the debris (41)...
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WO/1998/031882A1 |
A raked bar screen for a storm overflow comprises a grid of parallel spaced-apart bars (1) attached at their ends to a framework (2, 3, 14). A comb assembly (4, 5, 6) has teeth (5) which engage in the spaces between the grid bars (1). Th...
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WO/1998/022662A1 |
The invention relates to a screening rake to extrude solids from a flow of waste water, comprising a screening belt which can be driven and placed in the flow of waste water and fitted with two lateral link chains (2) between which scree...
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WO/1997/046761A1 |
The invention relates to a fish ladder (1) to by-pass a vertical descent (SH) in a flowing watercourse (31F) or a dam (31T), with an upstream water inlet (2) and a downstream water outlet (3) and with basins (4) arranged between them sub...
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WO/1997/010389A1 |
A filter (2) including first filtering means (4, 6) for preventing an elongate inflexible object from passing through sideways and second filtering means for preventing an elongate inflexible object from passing through lengthways. The f...
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WO/1996/035842A1 |
A rake for cleaning the grating (3) of a screening plant (1) has a comb (7) secured to rake arms (5, 6) and made of a plurality of teeth (13-15) arranged on a crossbeam. In order to allow the individual teeth (13-15) of the rake (4) to b...
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WO/1995/032044A1 |
An endless filter chain (40) for filtering liquid, e.g. sewage water which flows along a drainage duct (1) comprises strainer elements (50) and connecting links interconnected to allow the strainer elements to pivot about respective pivo...
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WO/1995/019471A1 |
The apparatus comprises a flow passage (10) and a conveyor (14) extending across the flow passage at the bottom thereof. Immediately downstream of the conveyor there are provided flow blocking means (16). Screen means (18) associated wit...
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WO/1995/013430A1 |
Aquatic creatures have been rapidly reduced in rivers throughout the country, which is greatly attributed to obstruction in going upstream caused by differences in water level. Recovery of aquatic creatures is made possible by providing ...
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WO/1994/024373A1 |
A strainer for removing particles from effluent, comprising a screen (12) with a plurality of fixed parallel aligned bars (13) and displaceable bars (14). The strainer is arranged in a plane inclined downwards into a flow of water, with ...
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WO/1994/020226A1 |
A mixture of liquid and solid sewage flows in a stream along a channel (2) in the direction from right to left as seen in the Figure. A screening apparatus includes an endless screening belt (4) located with its lower inlet region in the...
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WO/1993/022513A1 |
A rotary sieving rake has a motor-driven, endless travelling screen (3) formed by successively arranged, lamellar sieving blocks (5) of a plurality of spaced apart, parallel plates (7), secured on a carrying shaft (9) and forcibly guided...
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WO/1993/002255A1 |
Machine for cleaning gratings for hydraulic weirs, comprising an oscillating arm (3) which oscillates at a pivoting point (2), and a double-acting cylinder (9) intended to position the oscillating arm (3). The above mentionned arm bears,...
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WO/1992/021824A1 |
A separating grid (1) for collection and removal of solid particles and objects (4) from running water (2) in a channel (2). The separating grid (1) comprises a stand (9) including a separating unit (10) formed by separating grid bars (1...
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WO/1992/021823A1 |
An apparatus for the removal of particles from the bottom of a water reservoir (1) or other water courses, comprising a long body (7) which in one end is connected to an outlet (14) for water and bottom particles. The outlet (14) has a l...
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WO/1992/018221A1 |
The invention concerns a screening rake for removing solids from flowing sewage, the rake having a driven screening belt (5) which can be immersed in the sewage and which has two lateral chains (11). A group of screening elements fitted ...
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WO/1991/014048A1 |
Machine (1) with a mobile grid for the elimination of solid products, transported by a liquid flow, from channels and similar is of a type comprising a first mobile group (2) and a second fixed group (3) of elements in the form of steps,...
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WO/1991/008346A1 |
The invention relates to a grid cleaner comprising at least one carriage (1) that is movable along a rail (3), said carriage (1) mounting at least one drivable drum (8) on which a hoisting rope (10) to which a grapple (14) is connected c...
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WO/1991/006710A1 |
This invention relates to a fishway provided to a dam, or the like. A water pressure chamber is formed at the bottom of an intermediate portion of the waterway. A fishway apparatus main body whose downstream end is supported pivotally an...
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WO/1990/013238A1 |
The object of the invention is to provide a cleaning apparatus to clean debris that collects on underwater structures. The apparatus has a cylindrical brush (12) that comprises a plurality of bristles (14) that extend radially outward. A...
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WO/1986/007283A1 |
A bar screen (10) conveyor system (20) for collecting debris or the like in a stream of liquid (8), including collector rakes (40) for attachment to the conveyor which are made of a tough, abrasion-resistant and corrosion-resistant elast...
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WO/1986/007106A1 |
A device for collecting and discharging solid particles carried by flowing water, and incorporating a grid structure (15) of stationary and displaceable bars (17, 18), the edges of said bars facing the water flow direction being step-for...
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WO/1985/002794A1 |
Method and apparatus for separating, from a liquid flow (60), solid particles entrained in the flow. A grid screen (10) is disposed in the liquid flow and is provided with spaced-apart bars which trap the particles, there being thereby f...
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WO/1985/001075A1 |
River control structures, of the kind konwn as upstream tilting gates. A structure in accordance with the invention includes a chamber, (1, 2, 3 and 4), and a tilting platform (5). The upstream end of the platform includes a curved trans...
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WO/1983/003372A1 |
Cleaning apparatus for separation screens intended for water inlets to turbines, intakes to turbines, intakes at wastewater treatment plants and the like and which cleaning apparatus includes a cleaning element which is movable, at least...
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JP2024021814A |
[Problem] It is possible to easily grasp the wear amount of a large number of lining plates step by step through visual inspection by an inspector, and as a result, it is possible to estimate when to replace a large number of lining plat...
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JP2024000900A |
[Problem] To provide a water intake control system that can discharge sand more frequently and at appropriate timing. [Solution] The water intake control system S includes an intake gate 20a that is installed in an intake channel 20c tha...
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JP2023166981A |
To provide a technique which is excellent in an effect for reducing dust, is also excellent in maintainability, enables addition on an existing head work, and dispenses with permission of a river manager.A bottom face suction type water ...
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JP7382596B2 |
To provide a dam spillway with sufficiently large water discharge capacity.A dam 10 comprises three top gates 13 at a top 12 of an embankment body 11 and two pieces of spillway 20 for the dam. The main element of the spillway 20 is a sip...
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JP2023545680A |
A suction line 11 connecting the upper body of water to a transfer chamber 13 adjacent to the lower body of water, a discharge line 15 connecting the transfer chamber 13 to a level above the surface of the upper body of water, a valve be...
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JP2023544063A |
The present invention discloses a self-adjusting rewatering fishway for a floating dock. The supplementary water fishway includes a fishway main body, the bottom of the fishway main body is rotatably connected to a floating dock structur...
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JP2023544062A |
The present invention discloses a buffer fishway and a buffer method that reduce damage rate and are suitable for emergency flood discharge. The buffer fishway includes a fishway main body 1, a migration path 3 is provided inside the fis...
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