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TECHNICAL HANDBOOKFOR INDUSTRIAL SCREW

CONVEYORS

Via Oberdan Nr . 37 / 39

45037 Melara (Ro) I TAL IA

Tel: 0425 / 89000 Fax: 0425 / 89698

e-mail : Pofersr [email protected] t



1



2

TABLE OF CONTENTS

1. GENERAL FEATURES___________________________ Errore. Il segnalibro non è definito.

2. STANDARD COMPONENTS FOR SCREW CONVEYORS WITH MOTOR AT THE

INLET ____________________________________________ Errore. Il segnalibro non è definito.

3. STANDARD COMPONENTS FOR SCREW CONVEYORS WITH MOTOR AT THE

OUTLET __________________________________________ Errore. Il segnalibro non è definito.

4. OVERALL DIMENSIONS_________________________ Errore. Il segnalibro non è definito.

5. STANDARD DIMENSIONS OF STRUCTURAL WORKSErrore. Il segnalibro non è definito.

6. RUBBER COUPLING STOP EDGE FOR INLET AND OUTLET HATCHESErrore. Il segnalib

7. STANDARD DIMENSIONS OF INLET AND OUTLET HATCHESErrore. Il segnalibro non è

8. DIMENSIONS OF ADJUSTABLE INLET HATCHES __ Errore. Il segnalibro non è definito.

9. INLET AND OUTLET HATCH FLANGES ___________ Errore. Il segnalibro non è definito.

10. FLANGE ON REDUCTION GEAR SIDE ____________ Errore. Il segnalibro non è definito.

11. FLANGE ON NEUTRAL SIDE FOR SCREW CONVEYORS WITH REDUCTIONGEAR AT THE OUTLET_____________________________ Errore. Il segnalibro non è definito.

12. FLANGE ON NEUTRAL SIDE_____________________ Errore. Il segnalibro non è definito.

13. IN-BETWEEN SUPPORT _________________________ Errore. Il segnalibro non è definito.

14. G.90 DRIVE OVERALL DIMENSIONS _________________________________________ 15

15. G.128 DRIVE OVERALL DIMENSIONS ________________________________________ 16

16. G.180 DRIVE OVERALL DIMENSIONS ________________________________________ 17

17. G.90 REDUCTION GEAR_____________________________________________________ 18

18. G.128 REDUCTION GEAR____________________________________________________ 19

19. G.180 REDUCTION GEAR____________________________________________________ 20

20. ELECTRIC MOTORS ____________________________ Errore. Il segnalibro non è definito. 21. TECHNICAL FEATURES OF ELECTRIC MOTORS___ Errore. Il segnalibro non è definito.

22. INSPECTION DOOR_____________________________ Errore. Il segnalibro non è definito.

23. LIFTING HOOKS _______________________________ Errore. Il segnalibro non è definito.

24. LUBRICATOR PROTECTION ____________________ Errore. Il segnalibro non è definito.

25. RUBBER COUPLING ____________________________ Errore. Il segnalibro non è definito.

26. BASE SUPPORT ________________________________ Errore. Il segnalibro non è definito.

27. THREADED FITTINGS __________________________ Errore. Il segnalibro non è definito.

28. ADJUSTABLE SUPPORT_________________________ Errore. Il segnalibro non è definito.

29. EXTENSION FOR ADJUSTABLE SUPPORTS________ Errore. Il segnalibro non è definito. 30. IDENTIFICATION PLATE ________________________ Errore. Il segnalibro non è definito.

31. TUBULAR SCREW CONVEYOR WEIGHT__________ Errore. Il segnalibro non è definito.

32. HOURLY OUTPUT FOR SCREW CONVEYORS AT TOP SPEEDErrore. Il segnalibro non è d

33. HOURLY OUTPUT FOR SCREW CONVEYORS AT REDUCED SPEEDErrore. Il segnalibro

34. HOURLY OUTPUT FOR SCREW CONVEYORS AT EXTREMELY REDUCED

SPEED Errore. Il segnalibro non è definito.

35. HOURLY OUTPUT FOR SCREW CONVEYORS AT LOW SPEED ( R=1/15) __________ 37

36. HOURLY OUTPUT FOR SCREW CONVEYORS AT EXTREMELY LOW SPEED (

R=1/20) 38



3

1. GENERAL FEATURES

-Tubular screw conveyors are suited to draw, batch and handle concrete or concrete-like

materials.

-These conveyors have been developed according to all safety rules according to EC directives.

-They are available in different sizes in order to satisfy any capacity needs (Ø139, Ø168, Ø193,

Ø219, Ø273, Ø323)

-They are developed in big series and consist of interchangeable sectional parts being

connected one to each other by sturdy flangings to reach a total length approximately

equal to 12 - 13 metres.

-The extensions are equipped with sturdy in-between cast iron supports with plain bearing,

which is protected from wear by suitable seals as well as lubricated through special

lubricating points.

-The in-between splined bolt allows a quick coupling with the broached bushes welded at the

flight pipe end to occur creating in this way a perfectly balanced screw conveyormovement.

-The standard flight is produced with reduced pitch at the inlet and normal pitch in the

remaining length, in order to avoid cloggings near the in-between supports and assure a

good functioning of the machine.

-The inspection doors are fixed to the screw conveyor pipe by the push of a bolt being screwed

on a bar, which levers on a protection welded on the pipe; such protection allows the door

to be fixed and hinders a water penetration in the inspection opening.

-Standard POFER reduction gear is directly splined on the flight shaft (at the inlet hatch) and is

equipped with an exclusive flanging contanining the seals.

-If the drive is mounted at the outlet, a head with an exclusive POFER sealing unit is mountedat the inlet.

-Reduction gears are available with power from 1.1 kW to 15 kW and with reduction ratio 1/5,

1/7, 1/10, 1/15, 1/20 to meet different capacity needs.

-Only environment friendly paints are used according to the law being in force.

-A standard supply includes:

-cylindrical inlet and outlet hatches (one as inlet, one as outlet) with rubber coupling

edge;

-in-between flangings;

-inspection door under the inlet hatch and under every in-between support;-in-between supports complete with lubricator and relevant protection;

-direct drive at the inlet;

-two lifting hooks for each screw conveyor piece;

-cable hose;

- “chrome yellow” RAL 1007 final painting; by request, different paintings can be carried

out;

-every conveyor is supplied with an EC declaration of compliance;

-adhesive labels indicating how to properly behave near dangerous areas.



4

2. STANDARD COMPONENTS FOR SCREW CONVEYORS

WITH MOTOR AT THE INLET

1

2

3

4

5

10

10

7

6

11

11

8

8

9

9

8

8

9

9

FIG 1

POS. NAME

1 Motor

2 Pofer Reduction Gear

3 Flange at on reduction gear side

4 Flange on neutral side

5 In-between support

6 Screw conveyor housing

7 Flight

8 Cable hose

9 Lifting hook or eyebolt

10 Inspection door and cleaning

11 Identification serial plate



5

3. STANDARD COMPONENTS FOR SCREW CONVEYORS

WITH MOTOR AT THE OUTLET

1

2

3

9

8

8

9

11

6

9

5

7

10

10

3

4

11

9

8

FIG 2

POS. NAME

1 Motor

2 Pofer Reduction Gear

3 Flange at on reduction gear side

4 Flange on neutral side5 In-between support

6 Screw conveyor housing

7 Flight

8 Cable hose

9 Lifting hook or eyebolt

10 Inspection door and cleaning

11 Identification serial plate



6

4. OVERALL DIMENSIONS

LiC1 C2

H

H

A

ØT

Ø2

Ø3

Ø1

B

PARTICOLARE PER MOTORIZZAZIONE

MONTATA ALLO SCARICO

FIG 3

DIMENSIONS (mm)

ØT 139 168 193 219 273 323

Ø1 230 230 265 300 355 425

Ø2 139 168 193 219 273 323

Ø3 139 168 193 219 273 323

H SEE TABLE N° 3

C1 120 140 150 160 180 220

C2 140 160 170 180 220 220

A 70 70 70 70 70 80

B 180 180 180 180 180 190

Li BY REQUEST (Rounding off to 10 mm)

TABLE 1



7

5. STANDARD DIMENSIONS OF STRUCTURAL WORKS

DESCRIPTION DIAMETER (mm)

OUTER PIPE Ø 139 Ø 168 Ø 193 Ø 219 Ø 273 Ø 323

Pipe thickness (mm) 3 3 3 3 4 4

FLIGHT PIPE Ø 48 Ø 60 Ø 60 Ø 60 Ø 60 Ø 90

Thickness (mm) 3 4 4 4 4 5

FLIGHT (mm) Ø 115 Ø 140 Ø 160 Ø 190 Ø 240 Ø 300

Pitch at the inlet? 80 100 120 140 170 200

Working pitch 120 150 170 200 250 300

Thickness?

3 4 4 4 4 4TABLE 2

? At the inlet the flight pitch is reduced to approximately 2/3 of the working pitch for a length

between 1÷2 meters.? The flight thickness is measured at approximately 2/3 of the section height from the point of

contact with the inner pipe.

6.

RUBBER COUPLING STOP EDGE FOR INLET ANDOUTLET HATCHES

6

22

PART. Z

PART. Z

FIG 4

The rubber coupling stop edge is obtained from hatch rolling before the hatch is welded on the screw

conveyor. In case of additional loose ordered hatches, they are always supplied with rolled edge andrust preventing painting.



8

7. STANDARD DIMENSIONS OF INLET AND OUTLET

HATCHES

-Standard inlet and outlet hatches are cylindrical and have a rubber coupling edge.

-The outlet hatch cannot have a diameter being smaller than the screw conveyor one.

-No screw conveyors with dimensions being smaller than the reported ones (see table) can beordered, unless our technical department communicates its approval.

“H” height (mm) according to inclination

SCREW

CONVEYO

R

HATCH 0° 5° 10° 15° 20° 25° 30° 35° 40° 45°

Ø 139 ø139 145 145 175 175 175 220 220 220 220 240

ø168 145 145 145 175 175 175 220 220 240 260ø193 145 145 175 175 175 175 220 220 240 260

ø219 145 145 175 175 220 220 220 260 260 280

Ø 168 ø168 175 175 175 200 200 200 225 260 260 280

ø193 175 175 175 200 200 225 225 260 260 300

ø219 175 175 175 200 200 225 260 260 280 300

ø273 175 175 175 200 225 225 260 280 300 330

Ø 193 <Ø193 175 175 200 200 225 225 250 275 275 300ø193 175 175 200 200 225 225 250 275 275 300

ø219 175 175 200 200 225 250 250 275 300 325

ø273 175 200 200 225 225 250 275 300 325 350

ø323 175 200 200 225 250 250 275 300 350 375

Ø 219 <Ø219 205 205 205 255 255 255 305 305 305 395

ø219 205 205 205 255 255 255 305 305 305 395

ø273 205 205 205 255 255 255 305 305 395 395ø323 205 205 255 255 255 305 305 395 395 395

Ø 273 <Ø273 250 250 250 250 300 300 350 350 400 400

ø273 250 250 250 250 300 300 350 350 400 400

ø323 250 250 250 300 300 300 350 350 400 450

ø356 250 250 250 300 300 350 350 400 400 450

Ø 323 <Ø323 300 300 300 300 300 350 350 400 450 500

ø323 300 300 300 300 300 350 350 400 450 500ø356 300 300 300 300 350 350 400 400 450 500



9

TABLE 3

8.

DIMENSIONS OF ADJUSTABLE INLET HATCHES

B

ØA

FIG 5

DIMENSIONS (mm)

SCREW

CONVEYOR

Ø A B 30° <40° 45°CODE

Ø 139 ø219 500 500 600 600 770 051ø273 500 500 600 600 770 055

ø323 500 500 600 600 770 060

Ø 168 ø219 500 500 600 600 770 051

ø273 500 500 600 600 770 055

ø323 500 500 600 600 770 060

Ø 193 ø219 500 500 600 600 770 251

ø273 500 500 600 600 770 255

ø323 500 500 600 600 770 260

Ø 219 ø219 500 500 600 600 770 451ø273 500 500 600 600 770 455

ø 323 500 500 600 600 770 460

Ø 273 ø273 500 550 600 650 770 651

ø323 500 550 600 650 770 655

ø356 500 550 600 650 770 660

Ø 323 ø323 500 550 600 650 770 810

ø356 500 550 600 650 770 815

ø408 500 550 600 650 770 820

TABLE 4?



10

9. INLET AND OUTLET HATCH FLANGES

ØC

ØA

ØB

ØC

ØA

ØB

ØF

FIG. 1

ØF

FIG. 2

FIG 6

DIMENSIONS (mm)

Ø A Ø B Ø C Ø F Th Fig Number

of holes

CODE

168 200 228 14 8 1 4 553 331

193 250 278 14 8 1 4 553 411*

219 250 278 14 8 2 8 553 491

273 300 328 14 8 2 8 553 611

323 350 378 14 8 2 8 553 691

356 400 440 14 8 2 8 553 731

406 470 530 14 8 2 8 553 771

TABLE 5

*The flange is not suitable for being connected with a ø200 throttle valve



11

10.

FLANGE ON REDUCTION GEAR SIDE

A

A

FIG 7

DESCRIPTION CODE

Tail flange Ø139 770 042






TABLE 6



12

11.

FLANGE ON NEUTRAL SIDE FOR SCREW

CONVEYORS WITH REDUCTION GEAR AT THEOUTLET

A

A

FIG 8

DESCRIPTION CODE

Flange and tail unit Ø139 770 040






TABLE 7



13

12. FLANGE ON NEUTRAL SIDE

A

A

FIG 10

DESCRIPTION CODE

Head flange Ø139 770 041






TABLE 8



14

13. IN-BETWEEN SUPPORT

C

C

FIG 10

SCREW

CONVEYOR

CODE

ø139? 722 305

ø168 722 405

ø193 722 505

ø219 722 605

ø273 722 755

ø323? 722 856

TABLE 9

? Supports are not made of cast iron but of welded steel



15

14.

G.90 DRIVE OVERALL DIMENSIONS

A B

C

D

E F

FIG 11

DIMENSIONS (mm)

REDUCTION

GEAR

kW A B? C D E F?

G.90 Pam 80 0.55 164 235 112 90 100 125

G.90 Pam 80 0.75 164 235 112 90 100 125

G.90 Pam 90 S 1.1 164 250 112 90 100 135

G.90 Pam 90 L 1.5 174 275 112 90 100 135

G.90 Pam 100 L 2.2 174 290 112 90 125 150

G.90 Pam 100 L 3 174 290 112 90 125 150

TABLE 10

? The “B” motor length can change ±50 mm according to the motor mounted on the reduction gear.? The terminal box height can change ±20 mm according to the motor; it is possible to mount a

motor having a 90° rotated terminal board.

-Installed motors are three-phase motors with following voltage: 230/400 V up to 5.5 kW and at 50

Hz; 4 Poles (1400÷1450 rpm), structural form: B5 (according to IEC rules), insulation class: F,

IP55 protection.-By request and against payment, we can supply multitension, multifrequency and tropicalized

motors.



16

15.


A B

C

D

E F

FIG 12

DIMENSIONS (mm)

REDUCTION

GEAR

kW A B? C D E F?

G.128 Pam 112 4 196 335 148 128 125 150

G.128 Pam 132 S 4 5.5 221 370 148 128 150 175

G.128 Pam 132 MA 4 7.5 221 410 148 128 150 175

G.128 Pam 132 MB 4 9.2 221 410 148 128 150 225

G.128 Pam 160 M 4 11 221 520 148 128 175 225

G.128 Pam 160 L 4 15 221 520 148 128 175 225

TABLE 11

? The “B” motor length can change ±50 mm according to the motor mounted on the reduction gear.? The terminal box height can change ±20 mm according to the motor; it is possible to mount a


-Installed motors are three-phase motors with following voltage: 230/400 V up to 5.5 kW and

400/690 V in case of more than 5.5 kW at 50 Hz; 4 Poles (1400÷1450 rpm), structural form: B5

(according to IEC rules), insulation class: F, IP55 protection.-By request and against payment, we can supply multitension, multifrequency and tropicalized

motors.



17

16.


A B

C

D

E F

FIG 13

DIMENSIONS (mm)

REDUCTION

GEAR

kW A B? C D E F?

G 180 Pam 90 S 4 1.1 250 250 110 180 100 125

G 180 Pam 90 B 4 1.5 250 275 110 180 100 125

G 180 Pam 100 LA 4 2.2 250 290 110 180 125 145

G 180 Pam 100 LB 4 3.0 250 290 110 180 125 145

G 180 Pam 112 N 4 4.0 250 335 110 180 125 150

G 180 Pam 132 S 4 5.5 280 370 110 180 150 175

G 180 Pam 132 MA 4 7.5 280 410 110 180 150 175

G 180 Pam 132 MB 4 9.2 280 410 110 180 150 175

G 180 Pam 160 M 4 11 280 520 110 180 175 230

G 180 Pam 160 L 4 15 280 520 110 180 175 230

TABLE 12

? The “B” motor length can change ±50 mm according to the motor mounted on the reduction gear.



18

? The terminal box height can change ±20 mm according to the motor; it is possible to mount a


-Installed motors are three-phase motors with following voltage: 230/400 V up to 5.5 kW and

400/690 V in case of more than 5.5 kW at 50 Hz; 4 Poles (1400÷1450 rpm), structural form: B5

(according to IEC rules), insulation class: F, IP55 protection.

-By request and against payment, we can supply multitension, multifrequency and tropicalized

motors.

17.

G.90 REDUCTION GEAR

FIG 14

Reduction Ratio

Power (kW) Size 1/5 1/7 1/10

0.55 Pam 80 A

0.75 Pam 80 B 4

391 100 391 140 391 180

1.1 Pam 90 S 4

1.5 Pam 90 L 4391 104 391 144 391 184

2.2 Pam 100 LA 4

3.0 Pam 100 LB 4391 108 391 148 391 188

TABLE 13

? For 11 kW motors, only.?

For 5.5 kW motors, only.



19

Reduction gears are supplied with connection prearrangement to be connected with the motor

according to IEC rules related to electric motors developed in B5 form, with 4 poles; for different

motors (double speed 6÷8 poles and so on), please contact POFER s.r.l.

Loose supplied reduction gears are painted with rust preventing paint.

18. G.128 REDUCTION GEAR

FIG 15

Reduction Ratio

Power (kW) Size 1/5 1/7 1/10

4.0 Pam 112 M 4 391 128 391 168 391 208

5.5 Pam 132 S 4

7.5 Pam 132 MA 4

9.2 Pam 132 MB 4

391 132 391 172 391 212

11 Pam 160 M 4

15 Pam 160 L 4391 136 391 176 391 216

TABLE 14

? For 11 kW motors, only.? For 5.5 kW motors, only.



20

Reduction gears are supplied with prearrangement in order to be connected with the motor




19. G.180 REDUCTION GEAR

FIG 16

Reduction Ratio

Power (kW) Size 1/15 1/20

1.1 Pam 90 S 4

1.5 Pam 90 L 4391 224 391 264

2.2 Pam 100 LA 4

3.0 Pam 100 LB 4

4.0 Pam 112 M 4

391 228 391 268

5.5 Pam 132 S 4

7.5 Pam 132 MA 4391 272

9.2 Pam 132 MB 4

391 232

-

TABLE 15



21

? For 11 kW motors, only.? For 5.5 kW motors, only.

Reduction gears are supplied with prearrangement in order to be connected with the motor




20. ELECTRIC MOTORS

FIG 17

Power (kW) Size “Standard” code “ABB” code

0.55 80 A 4 307 125 305 106

0.75 80 B 4 307 126 305 110

1.1 90 S 4 307 127 305 114

1.5 90 L 4 307 128 305 118

2.2 100 L 4 307 129 305 122

3.0 100 L 4 307 130 305 126

4.0 112 M 4 307 131 305 130

5.5 132 S 4 307 132 305 134

7.5 132 MA 4 307 153 305 088

9.2 132 MB 4 307 154 305 092

11 160 M 4 307 155 305 146



22

15 160 L 4 307 156 305 147

TABLE 16

21. TECHNICAL FEATURES OF ELECTRIC MOTORS

STANDARD MOTORS:

-Construction (according to IEC rules) in B5 form.

-Winding insulation in F class.

-Protection: IP 55.-Voltage 230/400 V up to 5.5 kW, 400/690 V in case of more than 5.5 kW.

-Network frequency: 50 Hz.

-4 Poles (for a rotation speed between: 1400÷1450 rpm).

The motors being mounted on the screw conveyor are painted in the same colour of the latter, in the

event a rust preventing paint is needed, motors will separately be supplied.

LEADING MARK MOTORS (“ABB” OR “SIEMENS”):

-Construction (according to IEC rules) in B5 form.

-Winding insulation in F class, tropicalized.

This treatment allows a remarkable electric as well as mechanical resistance and also high yield

and long life. The insulation protects winding from irritating gases, vapours, dust, oil and high air

humidity.

-Protection: IP 55 on whole motor.

-4 Pole version (for a rotation speed of 1400÷1450 rpm)

-Voltage with 50 Hz network frequency:

for motors up to 5.5 kW 230/400 Volts

for motors from 7.5 kW 400/690 Volts.

-Voltage with 60 Hz network frequency:

for motors up to 5.5 kW compresi 270/480* Volts

for motors from 7.5 kW 480/830* Volts.

Please, consider that with a 60Hz functioning, speed of rotation and motor power have anincrease of approximately 20%

*Variable tensions slightly being different according to the motor mark

Motor is prepainted by the manufacturer, in order to be used in both indoors or outdoors; it can

continuously function in environments with 85% relative humidity with a maximum external

temperature of +25°C, for short periods, it can also function with a 100% relative humidity and a

temperature up to 30°C.



23



24



25

On thsi painting, an additional rust preventing coat and paint in the same colour as the screw

conveyor is applied in case the motor is mounted on the screw conveyor, only a rust preventing

coat is applied in case of separately supplied motors.

Note: for motors having different features (double speed motors, explosion-proof, self-braking

motors, motors with special tensions, etc.), please contact POFER s.r.l.

22.

INSPECTION DOOR



26

FIG 18

CODE

SCREW

CONVEYOR? ? ?

Ø 139 570 410 570 401

Ø 168 570 510 570 501

Ø 193 570 610 570 601

Ø 219 570 730 570 720

Ø 273 570 810 570 801

Ø 323 570 910 570 801

570 990

Ø 323 oversize 570 912 570 901Ø 356 570 920 570 901

Ø 406 570 950 570 949

570 995

TABLE 17

The inspection door is easy to use and has a simple structure, it is placed near the inlet hatch and

every in-between support. Checks of the mechanical inner parts, their possible replacement in case of

wear or troubles as well as the inner cleaning of the screw conveyor after use can easily be carried

out.



27

23. LIFTING HOOKS

FIG 19

On any screw conveyor piece 2 lifting hooks are welded, they are useful to lift the screw

conveyor for both transporting it or fixing it by possible tie rods.

CODE: 570 101

24.

LUBRICATOR PROTECTION

FIG 20

The in-between support lubricator protection is supplied with every screw conveyor and is painted in

the same colour as the latter; in case it is supplied in loose conditions, as a spare part, it has a rust

preventing coat.

CODE: 570 201



28

25. RUBBER COUPLING

Ø BOCCA

L

FIG 21

HATCH (mm) L (mm) Th (mm) CODE

300 4 470 221Ø 139

500 4 470 222

300 4 470 321Ø 168

500 4 470 322

300 4 470 401Ø 193

500 4 470 402

300 4 470 481Ø 219

500 4 470 482

300 4 470 601Ø 273

500 4 470 602

300 4 470 681Ø 323

500 4 470 682

TABLE 18

The order code includes 2 adjustable steel collars to fix the rubber coupling to the screw conveyorinlet or outlet hatch.



29

26. BASE SUPPORT

*

Inclinazione * Inclinazione

FIG 22

*The hatch height can be made according to customers' request, provided that it is consistent withinclination and screw conveyor drive type. The support is supplied complete with two threaded

fittings.

27. THREADED FITTINGS

40

63

30 16

A

A

FIG. 23

The pairs of threaded fittings are needed to fix the screw conveyor to the base support and can be

welded on both hatches and screw conveyor pipe.

CODE: 470 901



30

28.

ADJUSTABLE SUPPORT

C

D

E

82

A

B 60

Ø20

FIG 24

DIMENSIONS (mm)

SCREW

CONVEYO

R

A B C D E WEIGHT

(Kg)

CODE

ø139 139 240 125 225 150 2 .0 770 004

ø168 168 270 140 255 165 2.2 770 064

ø193 193 295 150 275 175 2.4 770 264

ø219 219 320 165 305 190 2.5 770 464

ø273 273 375 190 355 215 2.8 770 664

ø323 323 425 215 405 240 3.1 770 864

TABLE 19

The adjustable supports consist of sturdy half ring flangings screwed one to each other, which are

useful to fix tubular screw conveyors in order to avoid bendings and vibrations.



31

29. EXTENSION FOR ADJUSTABLE SUPPORTS

A

90

Ø 4 8

Ø 6 0

B

80 60

Ø 2 0

FIG 23

A (mm) C WEIGHT CODE

Min Max (mm) (Kg)

600 950 35 7.5 770 067

TABLE 20

The screw conveyor fixing occurs by screwing the adjustable support with the extension, which is

welded on a trestlework near the screw conveyor.



32

30. IDENTIFICATION PLATE

A456 /A

145 00

A456 /B

145 001

A456 /C

145 00

A000 /A

000 001

CODICE MACCHINA SEQUENZA DI COSTRUZIONE

Nr. PROGRESSIVO COMMESSA

FIG 24

The identification plate is positioned on each screw conveyor piece.

The plate reports: machine serial number, a letter indicating the assembling sequence of the pieces,

the order number and the construction progressive number, as well.

Please, remember that order number and machine serial number shall always be mentioned, in case

you need spare parts.



33

31. TUBULAR SCREW CONVEYOR WEIGHT

3 2

1

FIG 25

W1 = Weight in Kgs of drive complete with motor head and inlet hatch.

W2 = Weight in Kg of outlet head + outlet hatch.

W3 = Weight in Kg per screw conveyor linear metre without drive, without outlet head and also

without inlet and outlet hatches.

m = Linear screw conveyor length (distance between centres in metres).

Pt = W1 + W2 + (W3 x m) = Total screw conveyor weight in Kg

WEIGHTS (Kgs)

kW Ø139 Ø168 Ø193 Ø219 Ø273 Ø323

1.1 64 66 68 73 83 94

1.5 67 69 71 76 86 97

2,2 76 78 80 85 95 106

3 80 82 84 89 99 110

W1 4 91 93 95 100 110 121

5,5 112 114 116 121 131 142

7,5 121 123 125 130 140 151

9,2 129 131 133 138 148 159

11 165 167 169 174 184 195

15 185 187 189 194 204 225

W2 18 18 21 28 37 48

W3 26 32 38 41 45 58



34

TABLE 19

32.

HOURLY OUTPUT FOR SCREW CONVEYORS AT TOP

SPEED

In the squares there are:

reduction ratio (1/...) / installed power (kW)

SCREW CONVEYOR DIAMETER

Ø139 Ø168 Ø193 Ø219 Ø273 Ø323

Length (mtrs) 15 t/h 25t/h 40t/h 60t/h 90t/h 110t/h

1 5 / 1,5 5 / 3,0 5 / 4,0 5 / 4,0 7 / 5,5 10 / 7,5

2 5 / 2,2 5 / 3,0 5 / 4,0 5 / 4,0 7 / 5,5 10 / 7,5

3 5 / 2,2 5 / 4,0 5 / 4,0 5 / 5,5 7 / 5,5 10 / 9,2

4 5 / 2,2 5 / 4,0 5 / 4,0 5 / 5,5 7 / 7,5 10 / 9,2

5 5 / 3,0 5 / 4,0 5 / 5,5 5 / 5,5 7 / 7,5 10 / 11

6 5 / 3,0 5 / 4,0 5 / 5,5 5 / 7,5 7 / 9,2 10 / 11

7 5 / 3,0 5 / 5,5 5 / 5,5 5 / 7,5 7 / 9,2 10 / 15

8 5 / 4,0 5 / 5,5 5 / 7,5 5 / 9,2 7 / 11 10 / 15

9 5 / 4,0 5 / 5,5 5 /7,5 5 / 9,2 7 / 11 ---

10 --- 5 / 7,5 5 / 7,5 5 / 9,2 7 / 11 ---

11 --- 5 / 7,5 5 / 7,5 5 / 11 7 / 15 ---

12 --- 5 / 7,5 5 / 9,2 5 / 11 7 / 15 ---

13 --- 5 / 7,5 5 / 9,2 5 / 11 7 / 15 ---

TABLE 20

-Capacities have been calculated considering concrete with specific weight equal to 1,13 t/m3asmaterial to be conveyed.

-The installed power refers to electric three-phase motors having following technical features:

-voltage 230/400 V up to 5.5 kW and 400/690V for motors from 7.5 kW with a 50Hz network

frequency.

-4 poles (for a speed of rotation of 1400÷1450 rpm).

-Installation under 1000 m above sea level, at ambient temperatures between -20 e i +40 °C.



35

33. HOURLY OUTPUT FOR SCREW CONVEYORS AT

REDUCED SPEED




Ø139 Ø168 Ø193 Ø219 Ø273

Length (mtrs) 10 t/h 17t/h 27t/h 40t/h 67t/h

1 7 / 1,5 7 / 2,2 7 / 2,2 7 / 4,0 10 / 5,5

2 7 / 1,5 7 / 2,2 7 / 3,0 7 / 4,0 10 / 5,5

3 7 / 1,5 7 / 2,2 7 / 3,0 7 / 4,0 10 / 5,5

4 7 / 2,2 7 / 3,0 7 / 4,0 7 / 5,5 10 / 7,5

5 7 / 2,2 7 / 3,0 7 / 4,0 7 / 5,5 10 / 7,5

6 7 / 2,2 7 / 3,0 7 / 4,0 7 / 5,5 10 / 9,2

7 7 / 3,0 7 / 4,0 7 / 4,0 7 / 7,5 10 / 9,2

8 7 / 3,0 7 / 4,0 7 / 5,5 7 / 7,5 10 / 9,2

9 7 / 3,0 7 / 4,0 7 / 5,5 7 / 9,2 10 / 11

10 --- 7 / 4,0 7 / 5,5 7 / 9,2 10 / 11

11 --- 7 / 4,0 7 / 5,5 7 / 9,2 10 / 15

12 --- 7 / 4,0 7 / 7,5 7 / 11 10 / 15

13 --- 7 / 4,0 7 / 7,5 7 / 11 10 / 15

TABLE 21

-Capacities have been calculated considering concrete with specific weight equal to 1,13 t/m3as

material to be conveyed.-The installed power refers to electric three-phase motors having following technical features:


frequency.





36


EXTREMELY REDUCED SPEED




Ø139 Ø168 Ø193 Ø219

Length (mtrs) 7,5 t/h 12,5 t/h 20 t/h 30 t/h

1 10 / 1,5 10 / 1,5 10 / 2,2 10 / 3,0

2 10 / 1,5 10 / 2,2 10 / 3,0 10 / 4,0

3 10 / 1,5 10 / 2,2 10 / 3,0 10 / 4,0

4 10 / 2,2 10 / 3,0 10 / 4,0 10 / 4,0

5 10 / 2,2 10 / 3,0 10 / 4,0 10 / 5,5

6 10 / 2,2 10 / 3,0 10 / 4,0 10 / 5,5

7 10 / 2,2 10 / 3,0 10 / 4,0 10 / 7,5

8 10 / 2,2 10 / 4,0 10 / 4,0 10 / 7,5

9 --- 10 / 4,0 10 / 5,5 10 / 9,2

10 --- 10 / 4,0 10 / 5,5 10 / 9,2

11 --- 10 / 4,0 10 / 5,5 10 / 9,2

12 --- 10 / 4,0 10 / 7,5 10 / 11

13 --- 10 / 4,0 10 / 7,5 10 / 11

TABLE 22




frequency.





37

35. HOURLY OUTPUT FOR SCREW CONVEYORS AT LOW

SPEED ( R=1/15)




Ø139 Ø168 Ø193 Ø219 Ø273 Ø323

Length (mtrs) 5 t/h 8 t/h 13 t/h 20 t/h 42 t/h 73 t/h

1 15 / 0,55 15 / 1,1 15 / 1,1 15 / 1,1 15 /2,2 15 / 5,5

2 15 / 0,75 15 / 1,1 15 / 1,5 15 / 1,5 15 / 2,2 15 / 5,5

3 15 / 0,75 15 / 1,5 15 / 1,5 15 / 1,5 15 / 3,0 15 / 5,5

4 15 / 0,75 15 / 1,5 15 / 1,5 15 / 1,5 15 / 3,0 15 / 5,5

5 15 / 1,1 15 / 1,5 15 / 1,5 15 / 2,2 15 / 4,0 15 / 7,5

6 15 / 1,1 15 / 2,2 15 / 2,2 15 / 2,2 15 / 4,0 15 / 7,5

7 15 / 1,1 15 / 2,2 15 / 2,2 15 / 2,2 15 / 4,0 15 / 7,5

8 15 / 1,5 15 / 2,2 15 / 2,2 15 / 3,0 15 / 5,5 15 / 9,2

9 15 / 1,5 15 / 2,2 15 / 2,2 15 / 3,0 15 / 5,5 15 / 9,2

10 --- 15 / 2,2 15 / 2,2 15 / 3,0 15 / 5,5 15 / 9,2

11 --- 15 / 2,2 15 / 2,2 15 / 3,0 15 / 5,5 15 / 9,2

12 --- 15 / 2,2 15 / 3,0 15 / 4,0 15 / 7,5 ---

13 --- 15 / 2,2 15 / 3,0 15 / 4,0 15 / 7,5 ---

TABLE 23




frequency.





38


EXTREMELY LOW SPEED ( R=1/20)




Ø139 Ø168 Ø193 Ø219 Ø273 Ø323

Lungh. (mt.) 4 t/h 6 t/h 10 t/h 15 t/h 33 t/h 55 t/h

1 20 / 0,55 20 / 0,75 20 / 1,1 20 / 1,1 20 / 2,2 20 / 4,0

2 20 / 0,55 20 / 0,75 20 / 1,1 20 / 1,1 20 / 2,2 20 / 4,0

3 20 / 0,55 20 / 1,1 20 / 1,1 20 / 1,5 20 / 2,2 20 / 4,0

4 20 / 0,55 20 / 1,1 20 / 1,1 20 / 1,5 20 / 3,0 20 / 5.5

5 20 / 0,75 20 / 1,1 20 / 1,5 20 / 1,5 20 / 3,0 20 / 5.5

6 20 / 0,75 20 / 1,1 20 / 1,5 20 / 2,2 20 / 4,0 20 / 7.5

7 20 / 0,75 20 / 1,5 20 / 1,5 20 / 2,2 20 / 4,0 20 / 7.5

8 20 / 1,1 20 / 1,5 20 / 2,2 20 / 2,2 20 / 4,0 20 / 7.5

9 20 / 1,1 20 / 1,5 20 / 2,2 20 / 2,2 20 / 4,0 20 / 7.5

10 --- 20 / 2,2 20 / 2,2 20 / 2,2 20 / 4,0 20 / 7.5

11 --- 20 / 2,2 20 / 2,2 20 / 3,0 20 / 5.5 ---

12 --- 20 / 2,2 20 / 2,2 20 / 3,0 20 / 5.5 ---

13 --- 20 / 2,2 20 / 2,2 20 / 3,0 20 / 5.5 ---

TABLE 24




frequency.





Composition and print:

Pofer s.r.l.

45037 Melara (Rovigo) - via Oberdan 37/39e-mail [email protected] o [email protected]

http://www.pofer.it

Revisione 01 del 072004

man tecning rev1

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