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E. BEAUDREY ET CIE.

Tel. +33 1 42 57 14 35

beaudrey@beaudrey.com

BEAUDREY AMERICAN SERVICES

Tel. +1 970 237 2578 / +1 970 286 1953

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BEAUDREY ASIA SDN BHD

Tel. +60 3 2284 1912

beaudreyasia@beaudreyasia.com.my

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TRASH RAKES - R TYPE (ROTATING CHAIN)

PURPOSE AND APPLICATION

The “R” type trash rake removes from the water, large quantities of medium-small debris (grass, seaweed, jellyfish, etc.).


Used whenever large quantities of small debris are expected (power plants, LNG terminals, chemical or desalination plants, drinking water plants).

DESCRIPTION

“R” Rakes are installed in the screening plant upstream of the travelling screens or the drum screens. The water flows across the inclined bar rack where the debris are arrested. The trash collecting rakes are held on two endless chains. They travel down, well clear of the bar screen, run around the bottom rail meshing between the bars. The debris are removed and loaded into the trash collecting rakes, they travel upwards. At deck level, the debris are swept out of the rakes into the collection trough or basket. Two or three travel speed operation is provided.

 

Cleaning is started either by a timer, the operator or the head-loss monitoring system.

ADVANTAGES

  • Debris-handling capacity is high due to the number of rakes. It can be increased when required

  • CE compliant,

  • No possible oil spillage

  • Well-proven, sturdy design

  • Easy, reduced maintenance

  • Low induced head-loss

  • Fully-automatic operation

  • Easy installation

NECESSARY ANCILLARIES

  • Head-loss monitoring system

  • Electrical control cabinet

  • Pit dewatering stoplogs

  • Upstream bar rack if very heavy debris (tree trunks, etc) are expected

  • Trash collection system (baskets, etc).

SIZES AND DATA

  • Standard width from 1 to 4 m (3.3 to 13 ft), wider on specific request

  • Installation at 15° incline

  • Bar spacing from 15 to 50 mm (5/8 to 2”)

OPTIONAL FEATURES

  • Two-speed operation

  • Seismic qualification

  • Increased number of rakes

  • Atex compliance

  • Operation started by a timer, head-loss or operator

MATERIALS

  • Bar rack, rake guides, structure, debris slide, top shaft sprockets:      
    For fresh-water applications: painted carbon steel or AISI 304L stainless steel     
    For seawater applications: AISI 316L stainless steel with anodes, duplex or super-duplex stainless steel   

  • Rake tines, rollers:          
    In all cases: composite materials

  • Trash collector:    
    For fresh-water applications: AISI 304L stainless steel
    For seawater applications: AISI 316L stainless steel, duplex or super-duplex stainless steel      

  • Chain links, pins/ rollers:             
    In all cases: duplex stainless steel/polyamide