screen cleaners - Landustrie

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S C R E E N C L E A N E R S CONSTRUCTION Both types, R66 and R71, have the same basic construction and can be supplied with the same special features, such as: Narrower or wider grab Larger working depth: up to 30 meter Two-speed motor for both hoisting and travelling Stainless steel execution MÜNSTER SCREEN CLEANERS In the last 35 years Landustrie Sneek BV has acquired about 30 % of the world-wide market in the field of Münster type screen cleaners. Landustrie therefore has a considerable knowhow and experience in supplying and installing screen cleaning equipment. These screen cleaners are applied in many places with unwanted floating or suspended debris. APPLICATIONS The track contains one or more profile sections and is formed out of a steel plate of 10 mm, in which the carriage with the grab is mounted. The advantage of this construction is that screens of any width and depth can be cleaned. The variable track length allows positioning of a deposit at any desirable place. In order to meet current noise level requirements, following provisions have been made: Teflon guide strips on the grab Nylon wheels to move the carriage Low-noise lifting drive Low-noise hydraulic pump In situations where additional requirements are to be met, the carriage can be enclosed in a complete sound proof cabinet Polder drainage stations Sewage treatment plants Inlets to power- and desalination plants Storm drains Industry PRINCIPLE A screen is positioned in the channel. Over the screen an elevated track is placed, supported by columns or gantries. A construction, consisting of a grab connected to a carriage by cables, is running along this track. The grab is constructed in such a way that its tines fall in between the screen bars during lowering, to scrape out any jammed debris. When reaching the bottom of the screen, the grab will close hydraulically, after which the debris will be hoisted to the carriage and run along the track to the dump area.
ADVANTAGES: THE GRAB An important and unique feature of the LANDY screen cleaner is the way the grab is designed. The optimum weight distribution guarantees, that the grab will never tip over and due to the guiding strips, the grab will always clean the screen in a straight line. When encountering too much debris to handle in one haul, the grab will stay in position, close by using 2 hydraulic cylinders and grab out as much as possible, to resume its cleaning for the next cycle. No parts other then the cable drums are touching the cables so no parts are causing any unnecessary wear. This robust system ensures 100% reliability for this essential screen cleaner safety feature. The tines of the grab penetrate deeply into the bar screen, in order to make sure blockage and debris is removed from between the bars. For existing screen the grabs are adapted to the situation. CONTROLS The screen cleaner can operate fully automatically, controlled by the difference in water level across the screen detected by electronic sensors. Manual operation and operation by means of a timer is also possible. The screen will be completely cleaned from top to bottom in one cycle. The track can be equipped with curves, enabling a positioning of the deposit at any desirable place Possibility for direct dumping on truck, container or barge. Open construction and absence of intermediate transportation reduce space requirements and dirty screening areas. No conveyor belts required Absence of permanently submerged construction parts Insensible to icing One unit is sufficient for multi-screen operation PLC control and sensors allows complete automatic operation and versatility Proximity switch secures automated functioning, no moving levers and rolls, less wear and tear Heavy weight grab of maximum compression of debris Large obstacles such as mattresses, tree-trunks and root stems can be removed One type of hydraulics for all standard products, easy replaceable The use of well known manufacturers of all moving parts, ensures a long-term supply of spare parts. Double hydraulic hose, 1 spool, protected by cable wire Less noise, wear and tear because of the use of heavy duty rubber wheels and Teflon strips The grab always remains in an upright position, in contact with the screens. This ensures a better functioning, and a cleaner grab. The grab is designed to meet hoisting crane specifications
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screen cleaners - Landustrie

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