Monorail Type Sludge Removal System• Highly earthquake-resistant, our device is designed to handle
rectangular sedimentation basins, plate settlers and sand basins!

Applications
Water Supply and Sewerage System

FUJIWARA INDUSTRY CO.,LTD.

Features• Simple in structure with a small number ofcomponents, the scraper poses no serious
load on the side wall of the sedimentation
basin.
• The scraper can collect sludge over a very
wide area and prevents generation of corroded
sludge as the shape of the scraping blade isdesigned to match the basin bottom haunch.
• It is designed to run its underslung blade
carrier on the basin bottom and is therefore
highly earthquake-resistant.
• It features ease of installation and thus
ensures quick installation.
• It is easy to maintain because of its use of asmaller number of components andexpendable parts.

Sludgescraping plate

Scraping
blade

Blade carrier

Link chain

RailOverview (Technical principles, actions, etc.)[Structural Overview]• A blade carrier, equipped with scraping blades, shuttles on a rail installed at the center of the basinbottom as it is towed by the link chain with the forward and backward rotation of the drive unit. As theblade carrier moves toward the pit, the scraping blades are lowered rake the sludge on the bottom.
When the blade carrier moves back, the blades are lifted up.
• No special drive unit is necessary; the scraper synchronizes with the sludge scraping plate as it returns.
[Functional Overview]
1. Start of scraping: After a predeterminedlapse of time, the drive unit begins forward
rotation to lower the scraping blades,
causing the blade carrier to move toward
the sludge pit while collecting the sludge.
2. Completion of scraping: The blades stop at
the forward limit position as the scraper
arrived at the sludge pit, and the blade
carrier stops at the set position by thecontrol unit.
3. Start of return: After a predetermined lapseof time, the drive unit starts reverse rotation
to raise the blades and causes the blade
carrier to start moving toward the backward
limit position.
4. The scraper performs as it repeats themovements of 1 through 3 above.

Backward limit
positioncontroller
後進端位置制御装置Whenscraping
掻き寄せ時
Driveunit
駆動装置
Forwardposition controller
前進端 limit
位置制御装置Scrapingblade
かき寄せ羽根
Linkchain
リンクチェーン
Scrapingblade
かき寄せ羽根When returning

戻り時

A0サイズ （841×1189mm）
Water Group of Kansai-Asia Environmental and Energy-Saving Business Promotion Forum (Team E-Kansai)

Introductory Track Record[Outside Japan]• China (2006 to 2007 and 2009)• Taiwan (2003, 2005 and 2009)[Inside Japan]• More than 150 units to sewerage
plants (since 1993)• More than 60 units to water treatment
plants (since 2001)

Unit delivered to a water treatment plant

Effects• Since the scraper uses almost no brackets, it does not allow deposition of sludge, which helps
improve water quality.
• Because of its use of a small number of components, the scraper eventually has a fewer spots toinspect.
• Because of its use of a small number of expandable parts, the scraper does not need much
maintenance cost.
• As the underslung blade carrier moves on the basin bottom, it is less subject to the impact, and its
resultant damage, of vertical and lateral water trembling by a major earthquake or its aftershocks andthus allows easy restoration even in the event of damage.

Link belt type (flightsand chains that dropped
after an earthquake)

Link belt made ofcomplex structure

Monorail sludge scraper
http://www.fj-i.co.jp
E-mail info@fj-i.co.jp

Inquiries

FUJIWARA INDUSTRY. CO. , LTD.

1-4-5 Sakaigawa, Nishi-ku, Osaka, 550-0024, Japan

TEL +81-6-6586-3388

FAX +81-6-6586-1177

A0サイズ （841×1189mm）
Water Group of Kansai-Asia Environmental and Energy-Saving Business Promotion Forum (Team E-Kansai)