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EnviroStrap

Vertical bar screen

Envirostrap vertical screens, STR series, can be installed in channels or in pumping stations. They fulfill both fine or coarse screening function. They can also be equipped with a fully integrated compactor for screenings dewatering (STR/P series).
The effluent passes through the screen, while the waste is stopped by vertical bars spaced apart according to the desired mesh.
The screen start-up is programmed periodically, and by loss of head measurement caused by the accumulation of waste on the bars. The waste is lifted by means of a rake going alternatively upward and downward. Driving of the rake is ensured by a strap.
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Layouts
1

Solid waste outlet

2

Effluent inlet

3

Motorisation

4

Strap

5

Inspection cover

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Cover

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Rake

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Bar screen

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Fixing flange/ground level

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Frame

With compactor
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Bagging unit

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Effluent inlet

3

Motorisation

4

Cover

5

Strap

6

Inspection covers

7

Screw compactor

8

Rake

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Bar screen

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Fixing flange / ground level

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Frame

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Option : Bar screen with an integrated compactor
The screening waste is falling down directly into an integrated screw compactor installed transversally where it is compressed and dewatered. Screenings can also be conditionned into a continuous plastic bagging unit before beeing dumped into a container.
Specificities
  • Installation : Pumping station / Channel
  • Vertical screening
  • Bar spacing from 6 to 30 mm
  • Discharge height up to 6 m
  • Screenings discharge upstream
  • Rake driving by strap
  • Simple design, reliable and sturdy
Frame
The structure of the screen is made up of two lateral frame structures offering two screening widths possibilities of 400 or 600 mm. For channel installation, lateral rubber bands are sealing the gap between screen and civil-work. For pumping stations, a quick-coupling flange is an integral part of the machine. It is possible to pull out the screen without going down to the bottom of the station
Filtration screen
The screen consists of fixed bars whose space between them defines the screening mesh. This simple technology is suitable for low flow rates, which can be used either as a fine or coarse screen (6 to 30 mm bar spacing).
Mecanism
The upward and downward movement of the rake is generated by the winding and unwinding of a strap. An innovative central guide mechanism directs the toothed rake between the bars for perfect penetration into the bars and an effective waste lifting.
Waste
The screening waste can thus be unloaded in a container. They can be also transferred to a conveyor or a screw compactor integrated to the unit (Version STR/P).
Performances
Hydraulic flow rates with urban effluent (m3/h
MESH (MM)61015202530
STR 5007391104112117121
STR 700109136156167176181
Material
Construction in stainless steel 304L or 316L.
Dimensions
Overall dimensions in mm
MODELSDISCHARGE HEIGHT MAXITOTAL HEIGHT MAXICHANNEL WIDTH MINISCREEN WIDTHSTR WIDTHCHANNEL HOLD LENGTH MAXI
WITH COMPACTOR
STR 500600071005004004902500800
STR 700600071007006006902700800

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