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Shafted & Shaftless Screw Conveyors

Since 1978, our screw conveyor systems have been installed in many of the largest and most complex dewatered sludge cake applications in North America. We provide a full line of conveyance systems for maximum flexibility and performance:

  • Shafted and Shaftless
  • Horizontal, Inclined, Vertical and Live Bottom
  • Full Face, Ribbon and Notched Flights
  • Fixed and Adjustable Paddle
  • 304 SS, 319 SS or A-36 painted
  • Any configuration to meet your process needs
  • Less complex than cake pumps
  • Enclosed configuration controls odors
  • Less housekeeping – no spillage
  • Lower maintenance costs

BioSec Intermediate Bearings for Shafted Conveyors

BioSec offers Intermediate Bearings in many shapes and sizes. By applying a specially developed flexible coupling, the resulting extended life expectancy of the intermediate bearing enables greater distances between bearings.
Advantages:

  • Long distances between bearings
  • Long life expectancy for bearings
  • Eliminates the need for multiple (cascade arrangement) conveyors
  • Can be retrofitted to existing screw conveyor installations
  • Suitable for reversing screw conveyors
  • Alternate designs for open or sealed bearings
  • Local or central lubricators
  • Eliminate the concerns of dry operation

 

BioSec BioWear Liners for Shafted & Shaftless Screw Conveyors

BioWear Liners are designed to minimize wear that occurs during transport of abrasive material in both shafted and shaftless screw ocnveyors. BioWear Liners are interchangeable with existing wear liners and can be provided in various thicknesses. The liners will be designed to match the existing screw conveyor securing system. The exact size of the liners required is to be provided to BioSec as sizes vary between screw conveyor manufacturers. The liners can be provided flat or preformed to size.

BioWear Liners are designed for transporting abrasive materials and will provide three to four times the life expectancy of UHMW-PE, depending upon the operation of the equipment.

 

View BioWear Liner Technical Specifications (4.2 MB)


BioSec Conveyor Quick Reference Guide

Capacities & Dimensions

Horizontal Shafted Conveyors

Capacity   m3/hr
ft3/hr
21
738
29
1,015
34
1,199
44
1,550
67
2,362
89
3,155
Diameter D mm
inches
356
14
406
16
457.2
18
508
20
610
24
711.2
28
Trough Height H mm
inches
240
9.4
260
10.2
290
11.4
320
12.6
370
14.6
430
16.9
Support Height V mm
inches
280
11
300
11.8
330
13
360
14.2
410
16.1
460
18.1
Cover Width B mm
inches
552
21.7
604
23.8
655.2
25.8
706
27.8
808
31.8
910
35.8
Max RPM     54 47 42 38 31 27

Horizontal Shaftless Conveyors

Capacity   m3/hr
ft3/hr
11
387
13
473
17
618
24
841
31
1098
45
1604
Diameter D mm
inches
285
11.2
315
12.4
360
14.2
420
16.5
480
18.9
580
22.8
Trough Height H mm
inches
220
8.7
240
9.4
260
10.2
290
11.4
320
12.6
370
14.6
Support Height V mm
inches
250
9.8
270
10.6
290
11.4
320
12.6
350
13.8
400
15.7
Cover Width B mm
inches
494
19.4
535
21.1
580
22.8
644
25.4
704
27.7
804
31.7
Max RPM     34 30 27 23 20 16

Note: The capacities quoted above will vary depending upon the material to be conveyed, material dryness, and the speed of the conveyor. Dimensions are approximate.

Vertical Screw Conveyors

The listed capacities are an indication of performance of various vertical conveyors. The capacity depends on several factors, the main one being the product to be lifted.
As a rule, vertical conveyors are not fitted with intermediate bearings. In circumstances where the material are to be transported over long vertical distances, it is recommended that staged vertical conveyors are employed. Vertical conveyors can be used on many different materials, including wet, sticky dewatered biosolids. The compact design of the vertical screw conveyor has no return parts, like a belt conveyor.  Therefore, one significant advantage is the limited  size of the footprint.  They can be installed into very tight spaces; typically with the drive able to be mounted at the top or the bottom of the conveyor.

Vertical Screw Conveyors - Shafted Capacities

Capacity   m3/hr
ft3/hr
6
210
15
530
24
850
35
1,240
50
1,770
Diameter   mm
inches
375
14.8
480
18.9
550
21.7
690
27.2
790
31.1