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Roller Conveyor Series


 2.    Working principle

  This series of machines is a continuous pass-through type machine for automatically blasting plate and large other structural steel components placed onto a roller conveyor.  Work pieces with overall dimensions not exceeding the specifications can be blasted in a continuous operation.  Each machine is provided with an integrated roller conveyor for powering the work pieces beneath the blasting wheels.  The blast wheels are mounted above and below the conveyor at optimum angles for effectively blasting all exposed work piece surfaces.

  The pass-through openings in the entry and exit vestibules are shrouded by wear resistant rubber curtains to limit the escape of stray abrasive.  The exit vestibule is fitted with a high pressure fan powered blowing system and a rotary brush system  for removing and recovering residual abrasive from the blasted work pieces.  Loading and unloading operations are performed on conveyor extensions located at each end of the machine. 

   All shot blast machines include an integral abrasive recovery and cleaning system.  After passing through the blast wheel, the abrasive from the blast cabinet, and the residual abrasive from the blasted work pieces removed by a high pressure fan powered blowing system and a rotary brush system   will be directly collected  together by screw conveyor, and send the mixed abrasive to the air wash separator to clean through the bucket elevator and rotary separating drum ,the cleaned abrasive is separated from the resulting dust and other contaminants, then stored in a hopper, ready for reuse.  Collected contaminants are stored in a separate hopper for periodic disposal.

  Effective cleaning of the shot blasting media is perhaps the determining factor in achieving a high blasting performance, low system wear, and short blasting times. An archimedic screw conveyor or a vibrating screening channel conveyor transports the shot blasting medium from the shot blasting chamber to a high performance sectioned air flow sepating unit.

  The shot blasting media is first distributed via a cascade and regulated with adjustable separator flaps. it falls as a curtain and passes through a cleaning air stream, drawn by the the dust collector. The flow rate of the cleaning air stream is exactly adjustable to the different core sizes of the blasting media by air flow regulating valves.

  Non-usable  blasting media and dust are carried out of the media mixture while usable blasting media flows direct into the blasting media flows into the blasting media hopper. complete  cleaning is ensured by integrated separators and cyclone units,also can be equipped with a highly efficient  pulse-style backing-blowing dust-filter.

All machines utilize replaceable highly wear resistant materials in critical locations.  All machine control systems are pre-piped and pre-wired.  All machine dust exhaust ports are pre-piped to a central collection point, ready to be connected to an external dust collector or optionally, a fully integrated dry cartridge type dust collector can be provided.

Optional Features:

Integrated Load/unload transfer Roller Conveyor :

 The peripheral equipments is adapted to suit the need of the user,delivery of the workpieces to the entry side and their discharge from the exit side can done manually or automatically.seals on the entrance and exit vestibules prevent the escape of the shot particles.in the exit area is a roller conveyor with abrasive collection hopper where all residual abrasive is removed manually or with a cleaning device to then be reconditioned for reuse.

* Variable roller transporting speed system:
     
Sections ( except for C-sections) can be descaled from all sides in one single passage.adjustable thoroughput speeds and optionally adjustable abrasive throwing speeds and throughput quatities offer the following advantages:
     
Easy adaptation of dwell periods and blast cleaning intensity to suit a specific type of workpiece
     
Reduction of wearing
     
Reduction of the shot consumption

* Option for residual abrasive removal:
 
 Cartridge or bag type of dust collectors
  A highly efficient filter-barrel pulse back – blowing dust abrasive recycling system
Pneumatic removal
 
Combined pneumatic/mechanical removal using compressed air and vertically adjustable rotating roller brushes.
 
Air and Rotary Brush Abrasive Recover System at Exit
 
A compensating flow air wash separator providing 90” of abrasive classification
 
A rotary screen scalping drim with secondary screen
 
Overhead abrasive storage hopper for abrasive
 
A highly efficient filter-barrel pulse back – blowing dust abrasive recycling system
 
Screw conveyor at the bottom of the hopper moves abrasive to the boot section of the elevator,elevator lifts the shot to the shot hopper after removing of dust.
 
Abrasive separation in gravity type with separating tip air wash system and and abrasive trip arrangement.

*Shot blasting without ifs and buts
  
Direct drives and the rugged hanger bearings,all assure maximum up time and lowest  maintenance cost.
  The unique arrangement of the blast wheels slightly tilted in the blasting direction and the best patterm geometry ensure
  Even abrasive impingement to blast clean the workpieces from all sides
  A thorough blast cleaning effect for perfectly cleaned workpieces.

* Electric control system
* Mechanical and electrical installtion
* Factory moderm support
* Inspection and mataintenance serice contracts
* Modernization of existing installtions
* User friendly PLC driven controls or normal push button controls

  *Safe protecting system:
 
Safety ladders,platforms ( and optional platforms for wheel maintenance)
  Emergency lighting system in tough up booth
  Handrail or covers around all open pits

No.
description
unit
Q698
Q6912
Q6915
Q6920
Q6925
Q6930
Q6940
1
Valid width of workpiece
mm
800
1200
1500
2000
2500
3000
4000
2
Valid size of the inlet of the chamber
mm
800×400
1200×400
1500×400
2000×400
2500×800
3000×800
4000×400
3
Valid length of the workpiece
mm
1200-12000
1200-6000
1200-12000
1200-12000
3000-12000
2400-12000
4500-18000
4
Roller transporting speed( stepless)
m/min
0.5-4
0.5-4
0.5-5
0.5-4
0.5-4.5
0.5-4
2-8
5
The thicjness of the cleaning steel plate
mm
3-60
3-60
1.5-60
3-60
3-60
3-110
4.5-100
6
The cleaned material specification
 
Φ16-28
[≤20#<≤16#
[≤20#<≤16#
[≤20#<≤16#
 
60×8-300×1000
 
7
Shot blasting amount
kg/min
4×240
4×240
4×240
6×240
6×240
6×300
8×300
8
Initial charge of shot
kg
2000
3000
4000
4500
4500
8000
11000
9
height adjustment of the rotary brush(scraper)
mm
 
200
350
450
600
850
900
10
Ventilation volume
m3/h
8500
17560
19000
19550
27758
28050
38000
11
Machine size
mm
25017×4500
×9015
12180×4250
×7095
15200×5370
×6797
30650×6850
×9095
31200×8070
×7500
44042×6385
×7758
45000×7830
×11117
12
pit
mm
800
1616
2257
2800
2353
2800
4317
13
Total power(not include the dust removal)
kw
78.3
78.3
113.5
156.6
224.55
204.8
293.6
14
Machine weight
t
20
20.4
33
41
53.2
71.8
75

 

 

 

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