screen cleaners - Landustrie

S C R E E N
C L E A N E R S

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

S C R E E N
C L E A N E R S
Technical details Type R 66 Type R71 Type R03
Grab width standard 1860 1000 1000 mm
max. up to 3000 1400 1200 mm
Bar distance minimum 20 20 20 mm
Weight carriage approx 920 530 450 kg
Weight grab approx 620 430 290 kg
Lifting weight
(payload) approx 370 270 210 kg
max. up to 1220 700 500 kg
Working depth up to 21,00 14,70 7,70 m**
Lifting motor 4,0 2,2 1,5 kW
Traveling motor 1,0 0,37 0,37 kW
Hydraulic motor 1,10 1,10 0,55 kW
Lifting velocity approx 19,0 15,0 15,0 m/min
Traveling velocity approx 30,0 30,0 20,0 m/min
Hydraulic oil pressure maximal 170 170 170 bar
** The working depth of the screen cleaners can be extended on request
The above mentioned technical details refer to the standard execution of the
mentioned types. On customer request however, we can deviate from this and
design tailor made solutions for requirements not covered by the standards. All
units are manufactured in accordance with EC-directive.
Watertechnology
Landustrie Sneek BV
P.O. Box 199
NL-8600 AD Sneek
The Netherlands
Tel. +31 515 - 48 68 88
Fax +31 515 - 41 23 98
e-mail info@landustrie.nl
website www.landustrie.nl
Office address Pieter Zeemanstraat 6, Sneek
01-2013-1000 ENG.