E201-T Belt Scraper |
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E201-T
Applications
Universal choice for all normal cleaning applications.
Not suitable for mounting directly onto the head pulley.
Used in conjunction with torsion arm mountings to accommodate differing belt thicknesses on the same conveyor and excessive belt movement due to pulley eccentricity, thereby ensuring constant contact pressure with the belt.
Selection of correct blade material gives optimum blade life under all operating conditions and conveyed materials.
Features
Patented V-base torsion holder makes blade changing simple eliminating the need to remove the scraper from its mountings.
Fully sealed construction of torsion holder unit prevents material build up or ingress into the spring unit.
Twin arm design of the torsion holder prevents radial and lateral blade oscillations and only allows longitudinal blade movement thus ensuring uniform and constant blade contact with the belt, irrespective of variations in belt thicknesses and surface conditions.
Light weight polymeric material used for the torsion holder ensures ease of handling, corrosion protection and minimum impact on belt surface after deflection.
Patented blade torsion holder and blade design incorporating a deflector skirt ensures accurate assembly and a clean running scraper.
E 201-T SCRAPER - PARTS LIST - REF. DRG. BS 004-B
PART NO. ITEM CODE 1 Carrier Assembly Size 3
Size 42/8.1.3
2/8.1.42 60 deg SS 'V' Track 2/9.3 3 Blade - Tungsten Carbide
Triplex Tungsten
Chrome Tool Steel
Stainless Steel2/6.03
2/6.04
2/6.02
2/6.014 Torsion Holder - Red Standard
Blue - Stiff2/5.4.1
2/5.4.25 End Stop R-End Stop 6 Mounting Spindle Size 3
Size 42/1.3
2/1.47 Torsion Mounting Size 3
Size 42/2.3
2/2.49 Optional 3 piece shaft Size 3
Size 42/8.1.3/3P
2/8.1.4/3P10 Optional Off-set Plate Size 3
Size 42/8.1.22
2/8.1.23NOTE ! Always quote scraper belt width.
E201 T SCRAPER - ASSEMBLY INSTRUCTIONS
1. Referring to the parts list check that the correct parts and quantities have been supplied for the model and belt width of scraper ordered.
2. Normally scrapers are supplied with Blades (3) and Torsion Holders (4) assembled and fixed to the Carrier Shaft (1). If this is not the case, assemble these components as shown.
3. Check that the Blades (3) are free to deflect forwards and backwards. If any blades foul those adjacent, slightly slacken Stopper Set Screws and tap the Torsion Holders (4) sideways until the Blades (3) clear each other. Tighten Stopper Set Screws firmly.
Note: There should be approximately 0,5mm gap between blades.4. Check that the edges of the Blades (3) are in line and level. This is done by means of a straight edge or by resting the assembly with the blade edges on a level work bench. If any blades are not level, slightly slacken Blade Screws and using a rubber or wooden mallet gently tap the blades into line. Tighten the Screws firmly.
5. Depending upon the installation access a 3 piece carrier shaft may be required (see Installation Guide paragraph 1), then one or both of the Carrier Shaft End Pieces may now be attached. Check whether the optional off-set plates are to be used and if so ensure that they are correctly assembled. Ensure that all nuts and bolts are firmly fastened.
6. Remove the Clamp Plates from the Torsion Mounts (8).
7. Check that the Spindle Nuts move freely on Spindles (6).
8. Proceed with installation as per installation guide.
E 201-T SCRAPER - TORSION MOUNT - INSTALLATION GUIDE - REF. DRG. BS 012-A
DIMENSION TABLE
BELT WIDTH SIZE CODE NO. OF BLADES A B MAX C1 MIN C1 MAX C2 MAX C3 D MIN E W Y Z 900
Size 3
7
128
100
365
255
70
20
38
10
104
50
2000
1050
Size 3
8
128
100
365
255
70
20
38
10
104
50
2000
1200
Size 3
9
128
100
365
255
70
20
38
10
104
50
2000
1350
Size 4
11
122
130
425
335
0
130
40
5
136
60
3000
1500
Size 4
12
122
130
425
335
0
130
40
5
136
60
3000
1650
Size 4
13
122
130
425
335
0
130
40
5
136
60
3000
1800
Size 4
14
122
130
425
335
0
130
40
5
136
60
3000
2100
Size 4
17
122
130
425
335
0
130
40
5
136
60
3000
INSTALLATION INSTRUCTIONS
1. Refer to the Assembly Instructions, Parts List and Drg BS 004-B to confirm that all the necessary parts have been supplied and that the scraper is correctly assembled. Depending upon access space it may be necessary to use an optional 3 piece carrier shaft. Attach End Piece once the scraper is in position.
2. Referring to the dimensions given in the table above select the optimum position for the scraper and mark the location of the access apertures.
3. With reference to Drgs overleaf select the most convenient location for the mounting spindle (6). There are two possible positions but in both cases ensure that the spindle remains at 900 ( 100) to the belt surface. If no suitable location can be found to attach the spindle foot either to the chute or onto the conveyor structure the optional off-set plates may be used as shown in Drg BS 012-2. Note that off-set plates are not supplied as standard but must be ordered separately.
4. Fix the Spindles (6) firmly in position.
5. Check that spindle nuts move freely.
6. Locate torsion mount (8) on spindles as shown and adjust set screws until they just touch the torsion arm. Pre-tension the torsion mount by tightening set screws four full turns.
7. Check that Carrier Shaft End Pieces and Carrier Shaft Centre Piece (2) are firmly bolted together (3 Piece Shaft).
8. Position Carrier Shaft underneath the conveyor belt centrally with reference to belt edges and head pulley.
9. Attach clamp plates to assembled carrier shaft as shown.
Note: Assemble bolts, washers and nuts, finger tight only.10. Position carrier shaft and attached clamp plates on torsion mounts as shown and fit bolts, washers and nuts. Tighten finger tight.
Note: It may be necessary to adjust the location of the torsion mount on the spindle by means of the spindle nuts so that the blades are clear of the belt surface.11. Lay a straight edge on the top face of the carrier shaft end and rotate the assembled carrier shaft and clamp plates in the slots in the clamp plates until the straight edge is parallel to the belt surface.
Note: This step must be done carefully to ensure that the angle of the blade to the belt is correct.12. Tighten bolts and nuts. Do not over tighten!
13. By means of the spindle nuts adjust the scraper towards the belt surface until all the blades contact the belt surface.
14. Adjust the scraper one further full turn of the spindle nuts towards the belt.
15. Push all blades free of the belt surface and allow them to return to the belt surface under the torsion holder tension.
Note: 1. The blades should now rest on the belt surface 10 to 15 mm away from their original contact point.
Note: 2. Check that the set screws are not touching the torsion arm. If they are still in contact with the arm continue to adjust the scraper towards the belt in increments of half a turn of the spindle nuts until the set screws just clear the torsion arm. Push all blades free of the belt surface in the direction of belt travel after each adjustment, allowing them to return to the belt surface under the torsion holder tension.16. Slacken set screws four full turns and tighten lock nut.
17. Check that complete scraper assembly can move freely up and down on the torsion mounts and that all blades can move freely.
18. Check that all nuts and bolts are firmly fastened.
19. Start the conveyor and check if all blades are moving freely and scraping in full contact with the belt surface.
