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Transcript of Screens feeders-maintenace sandvik

Page 1: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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− aÉí~ÅÜ~ÄäÉ=ÅçîÉêë=áå=íÜÉ=ÉåÅäçëìêÉ=ÇÉëáÖå=~ääçï=É~ëó=ã~áåíÉå~åÅÉ=~åÇ=êÉé~áê=çÑ=íÜÉ=ëÅêÉÉåK

Page 12: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉå=dÉåÉê~ä

Terms

1. Screen body2. Screen cloths / screening

media3. Drive motor / unit4. Mechanism5. Spring support6. Dust encapsulation (option,

not shown in photo)

1

2

43

5

Page 13: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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qÉêãë

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Material flow directionMaterial flow directionMaterial flow directionMaterial flow direction

Drive unitDrive unitDrive unitDrive unit

Discharge endDischarge endDischarge endDischarge endFeed endFeed endFeed endFeed end

Vibrating unitVibrating unitVibrating unitVibrating unit

Right SideRight SideRight SideRight Side

Left SideLeft SideLeft SideLeft Side

Page 14: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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^äï~óë=ãÉåíáçå=ÉèìáéãÉåí=ëÉêá~ä=åìãÄÉê=~åÇ=ÉèìáéãÉåí=íóéÉ=ïÜÉå=çêÇÉêáåÖ=ëé~êÉ=é~êíë=çê=ÅçåëìäíáåÖ=ã~åìÑ~ÅíìêÉê>

6

1 2

3 4

5 78

Page 15: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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mêçÇìÅí=råáí=ÅçãéK ^`=ÅçãéK vÉ~ê oìååáåÖ=åìãÄÉêI=ïÜáÅÜ=åìääë=ÉîÉêó=óÉ~ê

NNUU e MV MMN

Page 16: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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� qÜÉ=å~íìê~ä=ÑêÉèìÉåÅó=çÑ=íÜÉ=ëíêìÅíìêÉ=ãìëí=ÄÉ=~í=äÉ~ëí=NKR=íáãÉë=íÜÉ=çéÉê~íáåÖ=ÑêÉèìÉåÅó=çÑ=íÜÉ=ëÅêÉÉåK

� ^ÇÉèì~íÉ=ÅäÉ~ê~åÅÉë=ãìëí=ÄÉ=~ääçïÉÇ=ÄÉíïÉÉå=íÜÉ=ëÅêÉÉå=~åÇ=íÜÉ=ÑáñÉÇ=ëíêìÅíìêÉI=ÅÜìíÉë=ÉíÅKI=íç=~ääçï=

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Page 17: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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� `ÜÉÅâ=íÜÉ=ëÅêÉÉåÛë=áåëí~ää~íáçå=~åÖäÉK

� `ÜÉÅâ=íÜ~í=~ää=çÑ=íÜÉ=ëéêáåÖ=~ñÉë=~êÉ=îÉêíáÅ~äK=

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� `ÜÉÅâ=íÜ~í=íÜÉêÉ=áë=~í=äÉ~ëí=~=ÅäÉ~ê~åÅÉ=çÑ=NMM=ãã=

îÉêíáÅ~ääó=~åÇ=RM=ãã=Üçêáòçåí~ääó=ÄÉíïÉÉå=~åó=é~êí=

çÑ=íÜÉ=ëÅêÉÉå=~åÇ=íÜÉ=ÑáñÉÇ=ëíêìÅíìêÉI=ÅÜìíÉë=ÉíÅKMaximum allowed height difference between spring supports (same end) is 3 mm!

Page 18: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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− qÜáë=ãÉ~ëìêÉãÉåí=ãìëí=ÄÉ=ïáíÜáå=P=ãã>

− oÉéÉ~í=íÜáë=éêçÅÉÇìêÉ=ïáíÜ=ÄçíÜ=ÉåÇë=çÑ=íÜÉ=

ëÅêÉÉåK

� tÜÉå=íÜÉ=ÜÉáÖÜí=ÇáÑÑÉêÉåÅÉ=áë=ÅÜÉÅâ=~åÇ=áí=áë=

~ÅÅÉéí~ÄäÉ=íÜÉå=áí=áë=éçëëáÄäÉ=íç=ÅÜÉÅâ=íÜÉ=äÉîÉä=çÑ=

ëéêáåÖ=ëìééçêí=éÉÇÉëí~äë=ïáíÜ=ÄìáäÇÉêÛë=äÉîÉäK

Spring support pedestals

Water hose

Page 19: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

Widht of the screen in metres 1,0 1,2 1,5 1,8 2,1 2,4 2,7 3 ,0

Center distance of spring support pedestals in mm

1400 1600 1900 2200 2500 2800 3100 3400

1°height difference in mm 24 28 33 38 44 49 54 59

2°height difference in mm 49 56 66 77 87 98 108 119

3°height difference in mm 73 84 99 115 131 147 162 170

� Table below shows what 1, 2 and 3 degrees inaccuracy in spring pedestal on one side of the screen means in mm to screen’s level.

sáÄê~íáåÖ=pÅêÉÉå=fåëí~ää~íáçå

Page 20: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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� `ÜÉÅâ=Ñêçã=ÉîÉêó=ÅçêåÉê=íÜ~í=ìééÉê=~åÇ=äçïÉê=

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A B

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AU

AL

BU

BLD

Page 21: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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� _ÉÑçêÉ=ëÉííáåÖ=íÜÉ=îÉêíáÅ~ä=éçëáíáçå=çÑ=íÜÉ=ãçíçê=Ñçê=íÜÉ=ÉäÉÅíêáÅ~ä=ÇáêÉÅí=ÇêáîÉI=íÜÉ=Üçêáòçåí~ä=Çáëí~åÅÉ=ÄÉíïÉÉå=

íÜÉ=ãçíçê=~åÇ=íÜÉ=ëÅêÉÉå=ãìëí=ÄÉ=ëÉí=ëç=íÜ~í=ïÜÉå=íÜÉ=íïç=Å~êÇ~å=ëÜ~Ñíë=~êÉ=ëíê~áÖÜíI=íÜÉ=ÑäÉñáÄäÉ=ÅçìéäáåÖë=~êÉ=

åçí=ÅçãéêÉëëÉÇK=

� ^ÑíÉê=íÜáëI=íÜÉ=îÉêíáÅ~ä=éçëáíáçå=çÑ=íÜÉ=ãçíçê=ãìëí=ÄÉ=ÑáñÉÇ=ëç=íÜ~í=íÜÉ=ÅÉåíêÉ=äáåÉ=çå=íÜÉ=ëÅêÉÉå=ëÜ~Ñíë=áë=~ééêçñK=

R=ãã=ÜáÖÜÉê=íÜ~å=íÜÉ=ÅÉåíêÉ=äáåÉ=çÑ=íÜÉ=ãçíçê=ëÜ~ÑíK aìêáåÖ=êìååáåÖ=ïáíÜ=ã~íÉêá~ä=îÉêíáÅ~ä=éçëáíáçå=ëÜçìäÇ=ÄÉ=

ÅäçëÉ=íç=M=ÇÉÖêÉÉëK

sáÄê~íáåÖ=pÅêÉÉå=fåëí~ää~íáçå

Page 22: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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� ^=ÑäÉñáÄäÉ=ÅçìéäáåÖ=~äï~óë=~ääçïë=íç=î~êóáåÖ=ÇÉÖêÉÉë=ÇÉéÉåÇáåÖ=çå=íóéÉI=ëíêìÅíìêÉ=~åÇ=ÇáãÉåëáçåëI

− Çáëéä~ÅÉãÉåíë=áå=Ñçìê=ï~óëW=~ñá~äI=ê~Çá~äI=ÅçåáÅ~ä=~åÇ=íçêëáçå~äK=

� qÜÉ=ëíáÑÑåÉëë=~ÑÑÉÅíë=íÜÉ=ï~ó=áå=ïÜáÅÜ=íÜÉ=ÅçìéäáåÖ=êÉ~Åíë=ïÜÉå=ëìÄàÉÅíÉÇ=íç=É~ÅÜ=çÑ=íÜÉ=î~êáçìë=éçëëáÄäÉ=

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� Torsional displacement� 7 degrees nominal load

� Radial displacement� 1-2 mm

� Axial displacement� 2-5 mm

� Conical displacement� 2-5 degrees constant

� 8-12 degrees temporary

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Page 23: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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� mêÉJÅçãéêÉëëáçå=Ä~åÇ=ãìëí=ÄÉ=êÉãçîÉÇ=

~ÑíÉê=áåëí~ää~íáçåK

� `çìéäáåÖ=ëïÉääë=~ÑíÉê=éêÉJÅçãéêÉëëáçå=Ä~åÇ=

áë=êÉãçîÉÇ=~åÇ=íÜÉêÉÑçêÉ=áí=áë=îÉêó=ÇáÑÑáÅìäí=

íç=áåëí~ää=ïáíÜçìí=Ä~åÇK=`çãéêÉëëáçå=íççä=áë=

éêçîáÇÉÇ=Äó=ëÅêÉÉå=ã~åìÑ~ÅíìêÉê=íç=ã~âÉ=

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ë~ÑÉK

Cardan AdapterPre-compression band

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Page 24: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 25: Screens feeders-maintenace sandvik

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Page 26: Screens feeders-maintenace sandvik

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Page 28: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Sandvik Mining and Construction

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Page 30: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Sandvik Mining and Construction

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Sandvik Mining and Construction

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~ÅÅÉäÉê~íáçå=EdJÑçêÅÉF=çÑ=íÜÉ=ëÅêÉÉå=áë=åçí=ÉñÅÉÉÇÉÇKStroke Stroke length

frequency Linear stroke screens (like LF) Circular s troke screens (like SC, CS,…)(stroke in centre of the screen)

920 rpm 9.5 mm 8 mm

820 rpm 12.0 mm 10 mm

730 rpm 15.0 mm 13 mm

� Remember that increased stroke length shortens the bearing life time!

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Page 33: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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`áêÅìä~ê=ëíêçâÉ=ëÅêÉÉåë PKQ=Ó PKT=d

iáåÉ~ê=ëíêçâÉ=ëÅêÉÉåë QKR=Ó RKM=d

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− ^äï~óë=^ph=colj=c^`qlovI=fc=kbba=ql=`e^kdb=olq^qflk=pmbbaW=tolkd=pmbba=�p`obbk=`^k=ork=kb^o=lc=k^qro^i=cobnrbk`v=� p`obbk=_lav=c^firob

2

3

4

5

6

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500 600 700 800 900 1000 1100 1200 1300

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9111315171921

G-f

orce

rotation speed (rpm)

Stroke length (mm)

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Sandvik Mining and Construction

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Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉå=píêçâÉ=äÉåÖÜí=~åÇ=ëíêçâÉ=~åÖäÉ

Shape of SC / CS / XS – screens stroke(screens, where the mechanism is close to gravity point of the unit)

� Stroke is circular

Shape of MSO-screens stroke

� Stroke is elliptical in end of the screen, circular in the middle

� Stroke angle is hard to determinate.

� In G-force calculations the stroke in the middle should be used

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Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉå=píêçâÉ=äÉåÖÜí=~åÇ=ëíêçâÉ=~åÖäÉ

Shape of LF-screens and feeders stroke

two shafts

� Stroke is mainly linear (just a bit elliptic)

� Stroke angle is about 60 degrees.

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Sandvik Mining and Construction

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Page 38: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Example:

Linear stroke screens Circular stroke screens

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12 mm 55 degrees 12 mm

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Page 39: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 40: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 41: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 42: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 43: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 44: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 45: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 46: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

� Notice that any kind of welding or excessive heatin g of screen body is not allowed without consulting manufacturer first!

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Page 47: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 48: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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picture 2 fastening bolts

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Page 49: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 50: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 51: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 52: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Mech. size

Gear wheel part numberNumber of teeth in gear wheel

one tooths effection to stroke angle

B13 713.0676-001 60 3,0°

B16 MGF-B16-OP5 80 2,25°

B20 MSS-B201-OP3 90 2,0°

B24 MGF-B24-OP11 60 3,0°

B30 ST5194-B30-OP4 70 2,57°

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UK `çìåíÉêïÉáÖÜí=Öì~êÇ

1. Bearing house

2. Space tube 3. Shaft

4. Counterweight

5. Bearing

7. Cover

8. Counterweight

guard

4. Extra counterweights

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Page 57: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Bushing

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Sandvik Mining and Construction

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� ^äï~óë=ÅÜ~åÖÉ=ÄçíÜ=ÄÉ~êáåÖë=éÉê=ëÜ~Ñí ~í=íÜÉ=ë~ãÉ=íáãÉK

� ^äï~óë=ìëÉ=åÉï=ÄÉ~êáåÖë=êÉÅçããÉåÇÉÇ=Äó=ëÅêÉÉå=ã~åìÑ~ÅíìêÉê=EëíÇ=ÄÉ~êáåÖë=ïáíÜ=`P=çê=`Q=ÅäÉ~ê~åÅÉ=~êÉ=åçí=ëìáí~ÄäÉ>FK

� ^äï~óë=ìëÉ=åÉï=ëÉ~äáåÖë êÉÅçããÉåÇÉÇ=Äó=ëÅêÉÉå=ã~åìÑ~ÅíìêÉêK

� ^äï~óë=ãÉ~ëìêÉ ÄÉ~êáåÖ=ÜçìëÉ=~åÇ=ëÜ~Ñí=ÄÉÑçêÉ=áåëí~ääáåÖ=åÉï=ÄÉ~êáåÖK

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Bearing size

Bearing house Shaft

Diameter Tolerance Diameter Tolerance

B16 170P6-0,036

-0,06180g6

-0,010

-0,029

B20 215P6-0,041

-0,070100g6

-0,012

-0,034

B24 260P6-0,047

-0,079120g6

-0,012

-0,034

B30 320P6-0,051

-0,087150g6

-0,014

-0,039

B34 360P6-0,051

-0,087170f6

-0,043

-0,068

B38

with

bushing

460H7

Bearing house

+0,063

+0,000

190f6-0,050

-0,079

460k7

(Bushing outside Ø)

+0,068

+0,005

400P6

(Bushing inside Ø)

-0,051

-0,087

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Page 59: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Sandvik Mining and Construction

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Page 73: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 78: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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PARALLEL MISALIGNMENT PARALLEL MISALIGNMENT

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Sandvik Mining and Construction

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Centre Distance Allowance For Installation(Flanged Pulleys Removed)

and Tensioning (mm)

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e

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Over 2540mm to 3300mm 4,1 1,0

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Insert push into pulley

Insert screws and locate on shaft

Page 86: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Tighten screws alternately

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Sandvik Mining and Construction

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To remove

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Sandvik Mining and Construction

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Page 94: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 95: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

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Page 96: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêëqêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

Screen does not start or it stops during operation.

1. Electrical fault.Check wiring and components and correct.

2. Too high oil viscocityChnage oil to correspond ambient temperature.

3. V-belts slipping or broken.Check condition and tension of belts.

4. Timing belt broken.Check condition and tension of belts.

Screen running incorrectly (in motion).

1.Screen contacts something during operation (base,m chute, material, ice etc.)

Arrange space for screen to run correctly.

2.V-belt/timing belt pulleys and/or V-belts/timing belts are worn.

Change new ones.

3.Drive equipment is wrongly positioned in relation to vibrating shaft.

Move and adjust according to instructions.

4. Screen base not solid enough. Support.

5. Springs broken or tiredChange springs. Screen is galloping – overloaded – add springs.

Page 97: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêëqêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

Drive equipment deflects and vibrates too much.

1. Fastenings has loosed. Tighten the fastening bolts .

Screen supporting frame deflects and vibrates too much.

1.Construction is too light orinsufficient bracing.

Add support and brace.

2.Foundations of screen frame are notstrong enough.

Build up foundations.

3.Support structure critical frequencytoo close to to operating speed.

Build up foundations.

Unusual noise during operation.

1.There are loose or damaged parts in the screen.

Tighten, repair or change the part. At the same time check all screws for tightness. Check the reason for damage.

2.Screen contacts something during operation.

Arrange space for screen to run.

3. Screen meshes are loose. Tighten according to inst ructions

4. Bearing damage. See bearing damage.

5. Broken spring.Change spring after checking the cause.

Page 98: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêë=qêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

Unusual noise during operation (continued).

6.There are stones, dust, tools etc inside the counterweight guards.

Clean regularly.

7. There are stones between springs.Clean the spring systems regularly and prevent material from building up between the springs.

Screen bearings overheat.

1.Incorrect amount of oil in vibrating shaft.

Check oil level.

2. Wrong type or old oil in shaft. Change oil.

3. Bearing damage. See bearing damage.

4.High temperatures in the environment or material.

Arrange ventilation and change the oil suitable for high temperatures.

5. Too high speed. Lower speed.

Page 99: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêë=qêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

Bearing damage.

1 Normal life of bearing exceeded.

Check amount of operating hours and always replace damaged bearing with a new one. Check also possible reasons for the damage.

2. Insufficient lubrication.Check lubrication maintenance and possible oil leakages.

3. Unsuitable oil. Change oil type.

4.Foreign material (steel, sand etc.) in oil.

Check the cause (some damaged part, dirty conditions during oil change, dirty cans in handling of oil etc.)

5.Shaft is not in level position, when the other bearing is overfilled and the other underfilled with oil.

Adjust the screen to the right position according to instructions.

6. Axial loads bearing stuck on shaft.Use corrosion protection lubricant between shaft and bearing. See item 6.8

Page 100: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêë=qêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

Bearing damage (continued).7. Too high speed. Lower speed.

8. Too high G-force. Reduce stroke length/speed.

Oil leakage.

1. Breather is clogged. Clean or change breather regu larly.

2.Seals are worn out or damaged (for instance during assembly). Do not reuse old seals

Change the seals being careful that the new ones are not damaged during installation.

3. Wear ring is worn out.Change wear ring to a new one. It is advisable to change a new ring at the same time with shaft sealing.

4. Oil level assembly loose or leakage. Tighten it.

Page 101: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêë=qêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

Aperture in screen meshes is clogging or screen capacity is insufficient.

1. Stroke angle or form incorrect. Adjust according t o instructions.

2. Stroke lenght is too short.Adjust counterweights according to instructions.

3. Too low frequency.Alter V-belt ratio by changing sheave.

4.

Unsuitable meshes (for instance too thick meshes in relation to aperture, shape of opening unsuitable, too small net opening percent etc).

Install suitable mesh.

5.Material includes plenty of clay, mud or other impurities.

Wash material before screening.

6. Too high feed rate to the screen. Reduce the feed rate.

7.Incorrect rotation direction of the stroke.

Change the rotation direction.

Page 102: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêë=qêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

Material flows mostly on one side of the screen.

1. Incorrect feed to the screen.Re-position the feed so that it is evenly spread across the whole width of the screen.

2.Screen is not running in the right position.

Check the horizontal position of the spring pedestals.

Too much material collecting at feed end of the screen.

1. Conveying rate of screen too low. See corrections above.

2. Too high feed rate or uneven feed. Adjust feed rat e.

3.Material fed against the conveying direction of the screen

Arrange feed as per manual chapter 3.2.

4.Direction of the screen rotation incorrect.

Check direction of rotation and change if necessary.

5.Too heavy material load from the chute above.

Adjust feed chute to remove head load.

Page 103: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêë=qêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

Screen meshes wear or break in some places rapidly; unusual high wear of meshes.

1.Wrong tensioning of meshes in some places, or generally in the whole screen.

Check and retighten screen meshes according to instructions regularly.

2.Fed material falls onto the screen mesh instead of the receiving area.

Re-position feed arrangement.

3.Screen mesh unsuitable for screened material.

Change the mesh. (for instance steel wire mesh to rubber mesh).

4.High capacity of screen and highly abrasive material.

Change the mesh. (for instance steel wire mesh to rubber mesh).

Material spills from chutes onto maintenance platforms etc.

1.Feed or discharge chutes unsuitable or incorrectly installed.

Re-install and seal. It is not permitted to connect extra parts to the screen body as this can impair the operation or damage the screen.

2.

Screen worn so badly that material is leaking from feed or discharge areas or side plates. This can happen if wear plates are not changed in good time or if they are loose.

Check the condition and fixing of wear plates and change in good time according to instructions. Check also tightening of the bolts regularly.

Page 104: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêë=qêçìÄäÉ=ëÜççíáåÖ

Trouble Possible cause Correction

In dust sealed screens, dust escapes.

1. Leak in the dust enclosure. Seal.

2.Insufficient suction in the dust enclosure.

Increase suction of vacuum inside the enclosure.

Supporting springs of the screen tilt too much.

1.Fastening screws in the springing system loose.

Tighten and change ifnecessary.

Page 105: Screens feeders-maintenace sandvik

Sandvik Mining and Construction

sáÄê~íáåÖ=pÅêÉÉåë=C=cÉÉÇÉêët~êåáåÖë

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