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Overview

The VAKI Fish Grader has been designed for high speed grading of small fish. The grader can accommodate size ranges from 0.2g up to 200g. The grading capacity is up to 6,000kg per hour. The grader is circular and requires less floor space than other grading machines. The grader is very simple to operate and is available in two size options.

Development

During the development process, a range of tests and experiments were conducted to measure the accuracy of the VAKI Fish Grader. In order to verify accuracy, the development team conducted a scientific sampling process to quantify the grading results. By measuring the actual thickness, weight and length of each graded fish and comparing those measurements with the physical settings on the grader, a highly-accurate and precise grading system was engineered. For more details see implementation of quality assessment.

Details

  • The VAKI grader is configured with four grading outlets and a single fish inlet.
  • Fish can be up-welled from a pump or netted into the grader’s de-watering box.
  • The grader’s inlet is adjustable so the entry speed of fish can be controlled.
  • The design of the VAKI Grader allows for easy, 360-degree outlet adjustment.
  • The height of the grader can be adjusted by +/- 1 meter.
  • The VAKI grader is constructed from stainless steel and is fully portable.

Operation

The VAKI Grader’s carousel is a hexadecagon shape, and it has sixteen boxes that rotate within the grader. As each box passes over an outlet, the opening in the bottom of the box is automatically increased to the user’s preselected size. The grading gaps can be set from fully closed up to 50 mm wide. The length of the box limits the maximum size of fish which can be sorted by thickness.

Features

Advantages

  • Accurate grading of fish from 0.2g
  • High capacity
  • 4 grades
  • Compact
  • Easily adjustable
  • Gentle on fish

How It Works

The grader carousel is hexadecagon and has sixteen boxes that rotate within the grader. As each box passes over an outlet the opening in the bottom of the box is automatically increased to preselected size. The grading gaps can be set from fully closed up to 50 mm wide. The length of the box limits the maximum size of fish which can be sorted.

The fish are graded by thickness. The standard grader has 4 outlets and a single fish inlet. Fish can be pumped or netted into the grader. The inlet can be angled to increase or slow down the fish flow into the grader and the inlet has an integrated de-watering box. There is a 360° adjustment in the direction of the outlets from the grader.

Specifications

Box length Fish size Capacity Weight Power supply
96cm Grader 22cm 0.2-100g up to 1,000 kg per hour 150kg 110 or 240 V, 2amp
140cm Grader 50cm 5 - 200g up to 6,000 kg per hour 200kg 110 or 240 V, 2amp

Fish Species

Salmon, trout, sea bass, sea bream, halibut, turbot, cod, tilapia, barramundi and more.

Technology

The inlet can be angled to increase or slow down the fish flow into the grader.


The grading gaps can be set from fully closed up to 50mm wide.



The grader is circuler and requires less floor space than other grading machines.


There is a 360 degree adjustment in the direction of the outlets from the grader.

References

Sweden

Company Contact Grader Size Fish Species
Hedens Fiskodling Ture Johansson Large Salmon
Umlax AB Josef Nygren Large Salmon
Umlax AB Josef Nygren Small Salmon

Faroe Islands

Company Contact Grader Size Fish Species
Fútaklettur Atli Gregersen Small Salmon
Fútaklettur Atli Gregersen Large Salmon

Norway

Company Contact Grader Size Fish Species
Voss Klekkeri Geir-Ove Henden Small Salmon
Lerøy Hydrotech - Torjulvågen Christian Kamsvåg Small Salmon
Barlindbotn Settefisk AS Reidar Haugen Small Salmon
Barlindbotn Settefisk AS Reidar Haugen Large Salmon
Fish Farm International AS Bjørnar Storholmen Large Cod
Norsk Marin Settefisk AS Inger Andreassen Small Cod
Sagafjord Seafarm AS Sigurd Handeland Small Cod
Termar AS Svein Dahl Large Cod
Bunes Fisk AS Knut Hansen Small Salmon
Gjølanger Settefisk AS Svein Åge Holstad Small Salmon
Ljones Fisk AS Torleif Ljones Large Salmon
Villa Smolt AS - Øyra Laks Leonard Lillestøl Large Salmon
Profunda Helge Ressem Small Cod
Marin Invest Bård Skarshaug Large Cod

United Kingdom

Company Contact Grader Size Fish Species
Johnson Seafarm Jeffrey Robertson  Small Cod
Johnson Seafarm Jeffrey Robertson Large    Cod
Johnson Hatchery Lesley McIlvoy Small Cod
Lighthouse Caledonia Henry Dalgety Small Salmon
Lighthouse Caledonia Duncan Macleod Small Salmon
Machrihanish Marine Julian Pajak Small Cod
Landcatch Neil Manchester Small Salmon
Landcatch Dave Danson Large Salmon
JS Salmon     Phil Connor Small Salmon
Marine Harvest John Richmond 3 x Large (2011) Salmon
Marine Harvest John Richmond 6 x Small Salmon
Loch Duart Mark Woods Small Salmon
Selonda UK Phil Gatland Large Bass
Mainstream Willie Young large Salmon
Sussex Tilapia Phil Jinks large Tilapia

Ireland

Company Contact Grader Size Fish Species
Knockadav, Screebe Hatchery Craig McCleane Small Salmon

Iceland

Company Contact Grader Size Fish Species
Háafell Þórarinn Ólafsson Small Cod
Hafró Matthías Oddgeirsson Small Cod
Stofnfiskur Jón Reynir Andrésson Small Salmon
Silfurstjarnan Benedikt Kristjánsson Large Salmon
Laxeyri Jón Guðjónsson Large Salmon
Fiskey Arnar Jónsson Small Flatfish-Halibut
Ísþór Jónatan Þórðarson Large Salmon
Veiðifélag Eystri Rangár Einar Lúðvíksson Large Salmon

Canada / USA

Company Contact Grader Size Fish Species
Great Bay Aquaculture George Nardi Small Cod
Cooke Aquaculture Greg Lambert Large Salmon
Australis Aquaculture Rocky Perham Large and small Barramundi
Hidden Falls Hatchery Lon Garrison Small Salmon
Fort Richardson Hatchery Andrea Tesch Large Salmon
Cooke, Oak Bay Hatchery Jake Elliot Small Salmon
Florida Dept. of Fish & Wildlife Vangie Collins Small  
Quinault National Fish Hatchery Debbie Leavitt Small Salmon
CanAqua Seafoods Paul Merlin Small Salmon

Chile

Company Contact Grader Size Fish Species
Marine Harvest Roberto Riethmuller 2 x Small Salmon
Marine Harvest Roberto Riethmuller  Large Salmon

China

Company Contact Grader Size Fish Species
Quanying (Fujian) Technology Co. Ltd Small

Estonia

Company Contact Grader Size Fish Species
Estonian Pharmaceutical Group Veiko Saluste 3 x large graders Trout

Greece

Company Contact Grader Size Fish Species
Selonda   Small Sea bass / bream
Nireus   Small Sea bass / bream
Karxarias EPE   Small Bass + Bream

Turkey

Company Contact Grader Size Fish Species
Akuadan   Large and small Sea bass / bream
Kilic   Large and small Sea bass / bream
Akuvatur   Large and small Sea bass / bream
Bagci   Large Sea bass / bream
Agromey   2 x Large (2011) Sea bass / bream

Netherlands

Company Contact Grader Size Fish Species
Solea   Small Flatfish - Sole
 Catvis   Small  

Spain

Company Contact Grader Size Fish Species
Stolt   Small Flatfish -Turbot
Luso   Small Bass + Bream
Predomar   Small Bass + Bream

Italy

Company Contact Grader Size Fish Species
Valle Ca´Zulliani   Small Bass + Bream
Valle Ca´Zulliani   Large Bass + Bream
Acua Azzura Small Bass + Bream

Australia

Company Contact Grader Size Fish Species
Stehr Group Morten Deichmann 2 x Small Kingfish
Inland Fisheries Tasmania Eoin Ryan Small Coarse fish
King Reef Seafoods Andrew Tindale Small  
Snobs Creek (Victoria DPI) Dylan White Small Native Species

Taiwan

Company Contact Grader Size Fish Species
Blue Ocean Bio Dianna Kuo Small Yellowtail

Korea

Company Contact Grader Size Fish Species
Hwan Kyeong Bio Maurice Shin Small Rock Fish

Malaysia

Company Contact Grader Size Fish Species
JLC Jon Li Small Asian Seabass & Tiger Grouper

Singapore

Company Contact Grader Size Fish Species
Enviro Vortex Howard Tan Small
Wintershine Asia Large Sea Bass

Switzerland

Company Contact Grader Size Fish Species
Percitech Rudolf Moser Small Perch

Zimbabwe

Company Contact Grader Size Fish Species
Lake Harvest Peter Blow Small Tilapia

Zambia

Company Contact Grader Size Fish Species
Kafue Fisheries Jurre Zaal Small Tilapia

Ghana

Company Contact Grader Size Fish Species
Tropo Farms Mark Amechi Large Tilapia

Croatia

Company Contact Grader Size Fish Species
Cromaris d.d. Small Bass + Bream

Emirate of Abu Dhabi

Company Contact Grader Size Fish Species
Al Wathba Livestock Production Large
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