Aquamaof GRADING BELTS MACHINE and SCREW ELEVATOR FOR CAGES

Doc. No. SDS 60 4 0000 Rev. A

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AquaMaof Technologies Ltd., P.O. Box 32, Lower Galilee Industrial Park, Tiberias, 14101, Israel

Phone: +972 (0) 4 673-7630 Fax: +972 (0) 4 673-7633 [email protected] www.aquamaof.com

Passport

Product Name:

GRADIND BELTS MACHINE FPR CAGES WITH SCREW ELEVATOR


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GRADING MACHINE WITH FISH LIFTING BY SCREW ELEVATOR

Technical Specification:

1. Sorting machine has 4 conveyor belts made of PVC, propelled by 4 electric

motors.

2. The sorting machine will be built from stainless steel.

3. The belt conveyor is three meters long and made of PVC.

4. There are three compartments under the belts.

5. Ten-inch chute under the sorting bath is mounted to a plastic hose.

6. Receiving tank at the frontal side of the sorting machine.

7. The four conveyors are run by electric motors.

8. The system will be powered by a electric motors.

9. A screw elevator SS 304 cylinder, with hydraulic gear motor and belts

propulsion rotating screw, diameter 546 mm and distance between pitches

26-33 cm. Screw rotation at up to 40 rpm.


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GRADIND BELTS MACHINE

The GRADER is an electrically-driven mechanical machine used to segregate fish

crops into several pre-set sizes.

Operation

The fish are delivered into the Collection Basin. The most useful and recommended

method of delivery is by means of a dedicated SCREW ELEVATOR, also a

valuable product of AquaMaof Ltd.

From the Basin the fish enter a belted conveyor: a V-shaped channel with a variable

distance. Two closed-loop, electric motors driven rotating belts form the channel

walls.

The conveyor-transported fish fall through the increasing opening between the two

belts, to be distributed through swiveling outlets and pipe extensions – into

separate, different containers. The separation of fish according to their size is

achieved.


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Mounting and Positioning

The Grader can be mounted on a variety of chassis:

a) Direct, fixed mount on any type of floor or a raised, fixed platform;

b) Fixed mount on a fishing raft;

c) Towed and wheeled, adjustable height platform;

The positioning is determined according to the mounting environment. When used

with a Screw Elevator, the two machines should be placed in-line, adjacent one to

the other, forming a complete fish distribution system set-up.

Model Definitions

The Graders can be ordered in a variety of model configurations, according to their

use:

a) Manual or Automatic (motorized);

b) Single Channel or Dual Channel (belt conveyors);

c) Choice of structural materials: SAE 304, SAE 316 or ST 37 (SAE A570);

d) Choice of belt materials: SAE 304, SAE 316 or PVC.


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Specifications

General:

1. Footprint: 167 cm (W) x 488 cm (L)

2. Height: 195 cm

3. Estimated Weight: 860 kG (without mounting chassis)

Structural:

1. Grading Channels: 2

2. Channel Length: 3 m

3. Channel Width: 0 to 130 mm (belt adjustable)

4. Channel Belts: Plastic

5. Belt Velocity: 0.8 to 1.2 m/sec (variable)

6. Belt Motion: 2 / 4 electric motors, independent belt drive

7. Number of Outlets: 2 to 5, 250 mm dia., swiveling

8. Outlet Extensions: up to 2.5 m long, 250 mm dia., PVC or SAE 304/316

9. Structural Materials: choice of SAE 304, SAE 316, ST 37 (SAE A570)

Performance:

1. Grading Capacity: 5 ton/hr (automatic mode, 2 grading channels)

2. Fish Mover Speed: (see Belt Velocity)

3. Control: all-velocities, Electronic Control Panel (PC) enabled

Interfaces:

1. Power Consumption: 0.75 kW each motor

2. Total Power Supply: Single Phase, 220 V, 2.5 / 4.0 kW (one/two channels,

resp.)

3. Water Supply: Low pressure, xxx cu.m/hr

4. Space: 640 cm (W) x 503 cm (L) x 195 cm (H)

Options:

1. Fish counter;

2. Wheeled, towed, adjustable height platform;

3. Walking platform w/stepladder.


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Engineering Drawing – General Views and Dimensions


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Screw Elevator DRH 5.5/546/93

General Description

System consists of two units:

1. Main construction with screw pipe installed on raft. Change of pipe incline and

height by hydraulic piston. Turning of pipe by hydraulic motor. Low rotation and

high momentum. Motor is controlled by regulating unit. Power supplier of entire

unit is located on main construction. Motor operates two oil pumps; one for screw

elevator motor and pistons on screw elevator and the other for sorting machine’s

motors and water pump.


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The elevator is constructed of a number of elements:

1. Main construction + stabilizing post + brakes + front axle swivel-able

wheel

2. Construction for sliding and tilting

3. Carrying and sliding beam + supporting ring + rubber supporting

rollers

4. Screw pipe + lower water and fish collector

5. Upper water separator

6. Collector shield

7. Hydraulic system

1. Main Construction

The main construction serves to support the machine, as a base for its

transportation and to support it on-site. It is constructed of:

1. Main wheels – for moving from place to place

2. Front axle swivel-able wheel – which serves as an axis when moving the machine

manually

3. Hydraulic power system – which supplies energy to the elevator pistons

4. Wheel brakes – to prevent the wheels’ sliding forward or backward

5. Stabilizing leg – to stabilize machine while placing it on-site

6. Lifting piston – to shift the elevator’s center of height in order to achieve different

inclines


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2. Construction for Sliding and Tilting

The construction tilts the elevator in various angles as needed and moves the

elevator backwards and forwards on the main construction. This determines

the optimum distance and depth needed to draw the fish from the water (that

is, when the pipe extends to the maximum in the rear and the tilt is 48%, the

depth will be maximum. This construction also serves as a base for the

carrying beam.

The construction consists of:

1. A U-shaped rail for sliding wheels

2. Tilting piston – which is connected to the main construction

3. Lifting piston – which is connected to the main construction and raises the tilting axis


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3. Carrying and Sliding Beam

The beam serves as a base for the elevator’s pipe. The pipe’s supports are mounted

on it, as well as the bases that enable sliding back and forth. Also mounted on the

beam are the collector shield, the upper water separator, the collapsible safety pull

and the motor.

The beam consists of:

1. Main beam

2. Polyurethane rollers – which turn the elevator pipe

3. Rollers – located in the U-shaped tilt rail to allow the beam’s sliding

forward and backward within the tilting construction.

4. Support ring – for stopping the pipe from sliding backwards along the

beam and as a base for vertical rotation.

5. Motor – The base is mounted on the beam and allows movement of the

Archimedes screw


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4. Screw Pipe

The screw pipe is the central base of the entire elevator. It lifts the fish from the

water. The fish flow through the pipe and are emitted at its end. The pipe consists

of:

1. A stainless steel pipe in which is welded a spiral that seals in the water

and brings it to the pipe’s end.

2. Lower collector – gathers the fish from the net (a relatively large area)

and introduces the fish into the pipe. The collector also has a grate that

adjusts the amount of water in order to prevent internal whirlpools.

3. Sliding ring – mounted on pipe in order to prevent pipe from sliding

on beam.


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5. Upper Water Separator

Separator is located at the upper end of the pipe. It separates the water from the fish

and returns it to the pool, allowing only the fish to be weighed. It also serves as an

adjusting axis for the optimum incline for unloading fish. It consists of:

1. Separator base – inside base is the grate along which the fish and water

pass. At its base is a 6” nickel pipe connected to the flexible pipe that

returns the water to the pool.

2. Separating adapter – which serves as axis of water separator and pipe

elevator

3. Winch cable - that raises and lowers the water separator and sets the

desired height and incline of grate.

4. At the end of the separator is a 12” pipe on which can be mounted

either an angle pipe (to shift the flow of fish) or a tarpaulin bag (to

channel the fish to the container’s opening).


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6. Collector Shield

The shield:

1. Protects the collector

2. Prevents the fish from returning to the water

3. Correlates between collector and pit

It is constructed of:

1. Pipes – that serve as the shield’s base

2. A rubber sealing ring and a forward stainless steel ring that seal off the

net from the rapidly rotating collector.

3. U-parts or small bridges mounted on the shield, which anchor the net

to the shield and ensure that it will not come loose, as well as to

prevent the fish from escaping. It is recommended that fisheries with a

proper drawing out pit have a soft 10 cm rubber ring in order to ensure

a total seal between the pit’s pipe and the collector’s shield.

4. Emergency ring and cable installed at the shield’s upper end, to stop

elevator operation in times of emergency.


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7. Hydraulic System

Description of unit:

Two hydraulic gearwheel pump supply power for the two units; one for the sorting

machine and one for the screw elevator. Pump for screw elevator supplies power for

height control, tilting, sliding, and rotating the pipe. Speed of rotation is controlled by

oil regulator. System is protected by relief valve.

Sorting unit is operated by four hydraulic motors connected in pairs on line to receive

identical speed and power between belts. Telescopic piston changes sorting

machine’s height. Valve 50/50 divides oil between pairs of motors. Belt speed

determined by quantity regulator and system is protected by 2 relief valves. Water

pump is also installed on sorting machine and is operated by high-speed oil motor

controlled by quantity regulator. (Sketches included)

The hydraulic system supplies all options for controlling the angles, height and

length of the elevator’s operations as well as the depth of fish extraction and

position of the pipe on the central construction.

The system consists of:

1. A hydraulic power unit with an oil tank, pump and motor, which supply the

pistons with oil.

2. Lifting piston – that determines the center of the elevator’s tilt, as well as

the height of its tail while it is transferred from place to place. For example,

if the piston is open to the maximum height, the screw’s tail will be at its

highest.

3. Tilting piston –sets the elevator’s angle. For example, if the pool is 1.30 m

deep, the screw’s base stands on its edge and the needed height of the spill

is 2.50 m, the tilt piston will determine the elevator’s angle according to the

conditions in the field. This piston is located at the front of the central

construction and is attached to the tilting and sliding construction and

allows collapse of the front axle swivel-able wheel to achieve convenient

transporting. This piston allows determination of the height of the safety

pulling device, in order to attach it to a tractor or car.

4. The sliding piston is located on the underside of the main beam and parallel

to it and is attached to the beam and to the sliding and tilting rails. It slides

the pipe up and down or backwards and forwards in order to set the distance

for fish removal from the base, as well as the height at which the fish are

ejected. If there is a problem of distance from the base, the sliding piston

will set the distance at which the fish will be ejected from the construction.


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If there is a problem of depth, the sliding and tilting pistons will both enable

removal of fish at as great a depth as possible.

5. Selectors – control the pistons. Each hand selector has its own color, which

is the same as the color on the piston. This enables identification of the

piston you wish to operate.


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Operation Checklist

A. Oil level in oil tank window.

B. Air pressure in tires and tires’ condition

C. Screws and pins are tight and in place

D. Full fuel tank

E. Support jacks are in proper position

F. No oil leaks

G. Pipes properly connected (screw elevator only/screw + sorting)

Operation Instructions

1. Placement of the elevator

2. Selecting angle and depth of drawing out fish

3. Adjusting angle of the grate on elevator’s top

4. Operating machine and routine work

5. Folding of elevator and preparation for moving from place to place

6. General upkeep

1. Placement of the Elevator

The following should be taken into account when positioning the elevator:

1. The slope of the embankment near the pool

2. Off-loading area

3. Height of off-loading

After selecting the site, the elevator should be placed as close as possible to the

worksite. Hook up the electricity and lower the front axle swivel-able wheel to

transfer position. Using tilting piston, release connection to vehicle. Move the

elevator manually to its final site. Release the brakes and place them in front of and

behind transfer wheels. Make sure that they are properly tightened (after gaining

work experience on the elevator it will be possible to position it immediately, using

the vehicle). Lower the support beams so that the base of the legs is as firmly

planted on the ground as possible and tighten the screws to prevent the legs from

slipping. Tilt the elevator slightly backwards. Remove the safe pulling system’s


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locking pin so that it can move back and be free (if necessary, the safe pulling

system can be tied back to allow the tank to get as close as possible to the elevator).

Begin tilting the elevator to the desired angle with the tilting piston, to desired

depth and distance. The ideal position for drawing out fish is when 2/3 of the

collector is covered with water and the machine is as horizontal as possible. But the

elevator can draw out fish even from 10 cm of water and at a maximum angle of

48°. Make sure

that the elevator is not leaning heavily on its lower edge, in order to avoid

damaging or bending the collector.

2. Selecting Angle and Depth

Selection of angle and depth of drawing fish from the pool depends on a number of

factors:

1. The pool’s depth relative to the elevator’s location

2. The height from which the fish are poured – the height of the tank or fish sorter

In principle, the more the machine is horizontal, the larger the quantity of fish and

water between the spiral pitches, and the fishing conditions improve. In addition,

when the angle of the grate separating the water from the fish is insufficient, the

fish will not slide properly and if the channel is at too steep an angle, the water will

flow forward beyond the grate. An angle of 10°-15° is ideal.

Tilt the elevator by using the tilting piston until the collector slides into the water.

The lifting piston also determines the angle. The more the piston is closed, the

lower the edge of the elevator. Balance is achieved by using the three pistons –

tilting, lifting and sliding.

Work with the pistons must be done most gently in order to avoid damage to the

elevator and to other machinery in the area. The final angle can also be achieved

after placing the sorter or the tank.

If the pool is emptied, leave a range for sliding and tilting down and also enough

height above the sorting machine or the tank.


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3. Adjusting angle of ejection

Adjustment of the angle of fish ejection is carried out using the water separator

located on the elevator’s upper end. The separator is controlled by a manual

winch which determines the grate’s and the separator’s incline, as well as the

elevator’s final ejection height. In principle, it is worthwhile to maintain an

angle of approximately 10°-15° in order to allow the fish to slide easily while

still being able to effectively control the water. But it is also possible to place a

cover over the grate in order to direct the water to the sorter’s receiving tank.

Final adjustment of the separator’s angle is carried out only after placing the

additional equipment and then the separator is lowered to its final position. Take

into account that the fish flow forwards when you place the additional

equipment. It is possible to attach a 90° or 45° 12-inch plastic pipe in order to

channel the direction the fish flow in.


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4. Starting the machine and routine work

Before starting the elevator, check that no one is working on its placement or

doing any other work on it. Make sure that the net tied to the opening will not

interfere with the flow of the fish (tighten the weights around the collector

shield and make sure that there is no surplus net to get caught in the rotating

screw. Make sure that the water separator is properly positioned and is at the

proper incline and that the fish will flow to the tank or to the sorter. Once all

this is done, the elevator can be turned on. Begin operation at very slow speed

until the elevator is filled with water (at that time, water will begin to flow in

the overflow pipe coming out of the water separator). After this, speed can be

increased.

There is a direction selector in the portable control box. In order to draw the

fish out of the water, set the selector so that the pipe’s rotation is in the same

direction as the arrows on the pipe. At work’s end, make sure that the pipe is

empty by turning it in a backwards direction for 2-3 minutes. Pace of fish

withdrawal from the water will be set by the sorters at the sorting table or by

the operator of the water tank.

Before operating, make sure that:

1. All emergency buttons are in operating position (pull them out)

2. The “reset” button is in operating position

3. The elevator is working on minimum speed

4. The elevator is properly stabilized. If not, rotations will cause

vibrations to the right and left.

During work it is possible to leave the hydraulic power unit working and it is

also possible, in certain situations, to shut off the motor if the elevator does not

sink.

5. Folding the machine and preparing it for transfer from place to place

At work’s end, make sure that the elevator is empty of water (most important!).

The elevator should never be moved when there is water in the pipe. After

emptying the pipe by rotating it backwards, slide the pipe forward to lift the safe

pulling system forward to where it can be fixed in the travel position.


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Lift the elevator’s tail as much as possible and move the vehicle close. Lift the

stabilizing legs to their highest position from the ground. Set the safe pulling

system’s height to the height suitable to the vehicle and attach it. Raise the front

wheel to a position from which you can fold it upwards and secure it in the

upward position. Raise the water separator as much as possible using the hand

winch.

Raise the elevator’s tail as much as possible using the raising piston. Make sure

that the separator is a safe distance away from the vehicle. Remove the brakes and

bring them back to their place. Brakes are to be removed only after the safety pull

is attached to the vehicle. Make sure that the safety pins are in place, that no one

is near the elevator and that the elevator’s tail is free of the net, rope or anything

else.

6. General maintenance

1. Grease the support ring every 14 days.

2. Oil the rubber wheels every 14 days with grease or silicon chain oil.

3. Oil the cable’s pulley every 30 days.

4. Check oil in hydraulic power unit and make sure that the amount of oil

shown in the indicator is sufficient.

5. Grease pins in safe pulling system every 21 days.

6. Grease pins in front wheel’s front axle swivel-able wheel system and front

wheel’s bearing every 21 days

7. Grease the sliding system, rollers in sliding channel and the channel itself

every 30 days

8. Grease all the pistons in the base and edge every 30 days.

9. Grease the lifting piston’s conduit every 21 days.

Once every seven days:

10. Major cleaning includes motor and construction.

11. Check for cracks in the construction

12. Check bearings and sliding wheels

13. Check motor’s undercarriage.

Documents

Aquamaof GRADING BELTS MACHINE and SCREW ELEVATOR FOR CAGES