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Finnchain System for Rectancular Tanks. Keeping up your process International product development.

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Presentation on theme: "Finnchain System for Rectancular Tanks. Keeping up your process International product development."— Presentation transcript:

1 Finnchain System for Rectancular Tanks

2 Keeping up your process International product development

3 Keeping up your process Finnchain System for Rectancular Tanks

4 Keeping up your process Finnchain System: Bottom and surface collector TYPE A: Bottom & surface collectorTYPE F: Cross collector

5 Keeping up your process Finnchain System: Bottom sludge scraper system TYPE B: Bottom collectorTYPE C: Bottom collector for LAMELLA tanks

6 Keeping up your process Finnchain System: Surface skimmers TYPE D: Surface scum skimmerTYPE D1: Oil skimmer

7 Keeping up your process Finnchain System: Grit scrapers TYPE E: Grit scraper with FLIGHTSTYPE E1: Grit scraper with BUCKETS

8 Keeping up your process Patented drive wheel with pulling pin construction The only wearing part of drive wheel is the pulling pin which is easy and fast to replace

9 Keeping up your process Long lifetime and operational reliability

10 Keeping up your process Otsikko? Sprocket wheel with teeth driven chainDrive wheel with adjustable pitch for Notched-link chain

11 Keeping up your process Otsikko? PIN wears the bushing from inside IDLER WHEEL wears bushing from outside Bushing wears quickly Breaking strength of the chain in proportion to wear rate Longer lifetime for bushing High breaking strength of the chain maintains longer DRIVE SPROCKET wears bushing from the outside PIN wears bushing from the inside DRIVE WHEELS PULLING PIN wears the chain notch IDLER WHEEL wears the minimum of the chains bottom surface Sprocket wheel with teeth driven chainDrive wheel with adjustable pitch for Notched-link chain

12 Keeping up your process Bearing area comparison data sheet PIN CHAIN (DIN 8150)NCS 720S Sprocket wheel with teeth driven chainDrive wheel with adjustable pitch for Notched-link chain

13 Keeping up your process Bearing area comparison data sheet Pin Chain (DIN 8150) NCS 720S Finnchain HA205M Finnchain HA200M Chain type 160 152 206 198 mm Chain Pitch Joint Bearing area Notch Bearing area Allowed working load calculated according to bearing area mm2 kg 117013001080 132016401180 1104972875 600988540

14 Keeping up your process Reliability and operational dependability

15 Keeping up your process Notched-link chains for rectancular tanks HA200M HA205M HA44M Chain for small to medium tanks Chain for medium to large tanks Drive chain Chain for small tanks with limited operation space

16 Keeping up your process Drive wheel with adjustable pitch The mutual distance of pins increases by relocating them by the same number of slots towards A Perfect match between chain and wheel within operational lifetime Always several (4-5) pins pulling the chain Minimizing the wear of the chain

17 Keeping up your process Comparison of working load with NEW chains: Sprocket wheel with teeth driven chainDrive wheel with adjustable pitch for Notched-link chain The workign load is divided between several pulling teeth/pins and chain links

18 Keeping up your process Comparison of working load with USED chains: Entire work load pulled by one tooth mainly Other teeth have lost the pullign contact with the chain The pitch of the pulling pins have been adjusted perfectly to match with worn and elongated chain The workign load is divided between several pullign pins and cahin links Sprocket wheel with teeth driven chainDrive wheel with adjustable pitch for Notched-link chain

19 Keeping up your process Lifetime comparison Finnchain HA-chains with variable pitch drive wheel Traditional chains with sprocket wheel Wear

20 Keeping up your process Scraper flights rectangular tanks FC-190 FC-200 FC-220 For tanks width 1.5-6,5 m Height 190mm For tanks width 6,5-8,5m Height 200mm For tanks width 8-10m Height 220mm

21 Keeping up your process Scraper flights rectangular tanks FC-300 FC-310 For tanks width up to 9m Height 300mm For tanks width up to 12m Height 310mm

22 Keeping up your process Scraper flight data sheet Flight Types Dimensions mm Thickness mm Weight Kg/m Cross Sect. Area mm2 Moment of Inertia mm4 Polar Moment of Inertia mm4 X - XY - YX – XY – YLV FC-190190 x 71 x 2.52 x 2.5 210983337865611259479313 FC-200200 x 100 x 2,52 x 2.5 2.61344572400011525002520000 FC-220220 x 120 x 33 x 32 x 3423151089128551013587012345 FC-300300 x 100 x 2,52 x 2.5 3.217021118300016641002521000 FC-310310 x 120 x 33 x 32 x 35.628231991711856001307013038

23 Keeping up your process Attachment of scraper flight Competing system Finnchain system Flight attached to the attachment link High pulling line ->vibration The wider tank, the higher flight makes the problem worser Flight attached to the patented flight end connector Pulling line in the middle of the flight

24 Keeping up your process Torsion test for scraper flight Traditional systemFinnchain system Flight type NLC-145 Open sigma profile Torsion Flight type FC-190 Closed hollow profile No torsion

25 Keeping up your process Problem: Chain skipping Solution: Chain watch If the system meets rapid and heavy increase of the workload that jamms the movement of the system, normally the plastic chain lifts off from the pulling pin or sprockets teeth Without any safety devices the chain skipping could cause damages such as: The flights do get misaligned and will drop off from the return rails The chain can broke Flights and flight end connectors can broke Afterwards the system is a long time non-usable because of extensive and expensive repair

26 Keeping up your process Problem: Chain skipping Solution: Chain watch The chain watch is installed above sprocket and it mechanically prevents chain skipping The movement of the lever on top of the chain activates the inductive switch at desired over load and stops the motor immediately, also alarm signal can be activated The chain watch stops the system before any damage can happend

27 Keeping up your process Idler wheel Teethless, does not wear the chain Installation with retaining rings, easy to install and replace FC-1P/76 with 76,1 mm hub bore for small to medium tanks FC-1P/80 with 80mm hub bore from big tanks

28 Keeping up your process Idler wheel shaft Can be installed/positioned close to the end wall turning Sludge can be collected away from the corners Axial adjustment to ease installation

29 Keeping up your process Drive shaft Drive shaft is made of AISI 304 or AISI 316 stainless steel Shaft diameter 80 mm

30 Keeping up your process Drive shaft Bearing Self aligning bearing Self adjusting Water lubricated Long lifetime because of wide bearing area

31 Keeping up your process Bottom rail Bottom rail FC-122, ease to install and replace Two types: smooth and with guiding track Connected to eachother with attachment piece Attachment piece is well anchored to tank floor Thermal expansion is allowed

32 Keeping up your process Drive unit SEW-Eurodrive 0,18-0,55 kW, power depends on tank dimensions Integrated motor and gear box – one package Standard speed of system is 1,2 m/min Customized speed with inverter or specified gear box

33 Keeping up your process Electrical wiring diagram Standard motor 3-phase, supply 380- 415V 50Hz Inductive switch of the chain watch, supply 24V DC – left and right sides Options available by request

34 Keeping up your process High quality patented solutions

35 Keeping up your process References Psyttalia WWTP, Athens Greece 128 sludge scareper systems in operation since 2002-2004

36 Keeping up your process References Project Besos, Barcelona Spain 90 sludge scraper systems in operation since 2005-2006

37 Keeping up your process References case: Hämeenlinna WWTP, Finland

38 Keeping up your process References case: Hämeenlinna WWTP, Finland Rectangular tank: length 35m and width 7m for primary sedimentation First system installed 1984 following systems -85, -89 and -90, together 16 systems Sludge scraper system has been in continuous operation since 1984 until 2004 when system was modernized: chain, drive wheel, flights and chain watch Tank has been emptied and cleaned every 3 year for maintenance purposes During 1984 – 2004 following spare parts has been replaced only once: Wear pads of flights Idler wheels Roller drive chain 20B-1

39 Keeping up your process References case: Hämeenlinna WWTP, Finland 1700 installations worldwide in June 2007, for example: Australia, Austria, Czech Republic, China, Curacao, Denmark, Estonia, Finland, Germany, Greece, Hong Kong, Hungary, Indonesia, Iran, Israel, Italy, Japan, Latvia, Lithuania, Malaysia, Netherlands, New Zealand, Norway, Oman, Philippines, Poland, Portugal, Russia, Saudi-Arabia, Slovenian, Spain, Sudan, Sweden, Switzerland, Taiwan, Thailand, United Kingdom, Vietnam… Longest tanks 98 m, width 10,5 m Widest tanks 12,6m, length 30 m Examples of big deliveries: Malaysia Puchong (w-l) 4,9m – 49m, 32 tanks for primary sedimentation, type-A Malaysia Bunus (w-l) 4,9m – 23m, 32 tanks for primary sedimentation, type-A Russia Yekaterinburg (w-l) 12m – 63m, 8 tanks for secondary sedimentation, type-A Vietnam Ho Chi Minh (w-l) 5m – 26m, 20 tanks for secondary sedimentation, type-A Vietnam Ho Chi Minh (w-l) 5m – 13m, 20 tanks for primary sedimentation, type-A

40 Keeping up your process Thank you


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