Foundry Cleaning Strip Descaline Shot Blasting Machine

Equipment function description
Shot blasting machine is designed for top and bottom surfaces of the steel strip descaling, Indoor Shot in the head by throwing the strip between the support rollers supporting the strip curtain prevents the entrance sealed with rubber pellets leaks, first, throwing two chambers after installing the auxiliary chamber purging after throwing a third chamber containing a final purge chamber. In the purge chamber purged with compressed air nozzle strip surface and remove all dust strip surface and bulk pellets. After blasting the steel strip pickling tank can enter.
1.Blasting principle
Shot blasting process uses a transverse principle applies to straight wide strip, throwing the first use of variable frequency motor drive, stepless adjustment of speed pellets projectile speed by throwing the first.
Shot mode you can adjust the orientation applies to two different sets of strip width. Therefore, the best pellets intensity distribution and use of blasting stream can be guaranteed.
2.Pellets circulatory system
In the blasting chamber by shot blasting pellets into steel projectile motion, a mixture of pellets and scale at the bottom of the blasting chamber collected and transported through the screw conveyor bucket elevator. Minimum diameter pellets bucket elevator vertical transport of the pellets mixture up to the upper screw conveyor, screw conveyor and transported to the pellets separator in the separator, pellets from impurities and small pieces of material (less than requested ) separated and fed into a hopper, feed pellets quantity supplied to the valve for adjusting the throwing head.

Equipment describtion
3XQ6914X series wide-strip blasting descaling machine
Mainly is：Access platform (upper platform, the lower platform 1 set) 1 set, shot blasting chamber (including lining shield) 3 sets, blow pill chamber 3 sets (including intermediate purge chamber liner sheeting, eventually purged each room sets a), shot blasting assembly 12 sets (including motor and transmission), the bottom of the screw conveyor 3 sets of roller conveyor 1 set, projectile control system 1 set (containing 12 pellets inlet valve and remote control system), bucket elevator 3 sets, pill residue separator 3 sets (including the upper part of the screw conveyor, pellets separators, storage hopper, screw conveyor and other waste), projectile compensation system 1 set, 3 sets of ventilation and dust removal system ( including inertial dust collector, bag filter, fans, motors, pipes, butterfly valves, chimneys, etc.), and the fan blowing pill pipeline (including 3 sets 3HE-200 blower and pipes), pneumatic control system, electrical control system.（See Figure equipment Total：3XQ6916X.0）.

Technique data
Mode：3XQ6916X The shot blasting machine, together with auxiliary equipment is stainless steel with a straight-through manner annealing, cooling, after breaking scale, the mechanical descaling and pickling device design. The shot blasting machine is designed in accordance with the requirements of product mix. In actual speed through strip steel, oxide type, strip width, annealing capacity may be. According to ISO8501-1: 1988 standard, the quality of the strip surface reaches Sa2.5 after blasting.
Blast wheel：
Length about（Free ladders length）14400mm
Length about（With enclosures）19000mm
Width about（With enclosures）8200mm
Height about 8500mm
(Determined in accordance with the actual bus design height) on the ground by the strip line height
Enclosures exterior noise (strip exit / entry except) ≤85Db (A)
Blast
Quantity（12set）
Type（With pneumatic adjustment means sets the orientation）QSX105*500
Blade quantity（8pieces）
Width/diameter 105/500mm
Speed（frequency）1500-250rpm
Shot speed about 52-78m/sec
Max blasting capacity 1100kg/min
Power 12*90Kw
Roots Blower
Use fans to provide compressed air on the pellets will blow away the surface of the strip, the following data are fan parameters：
Wind spproc.3600m³/h
Stress 0.68bar
Power 110Kw
Dust collector
Effciency 99.99%(For dust particles of 1 micron)
Gas-to -cloth ratio <1.5m/min
Wind：50000m³/h
Filter: polyester needle felt
Tempature ≤150℃
Power 75Kw
Clean air dust content：<50mg/Nm³
Total power1700kw
Power supply 3*380V±10% 50Hz±0.5Hz
Control voltage24DCV±10%
Compressed air demand of about174Nm³/h
Compressed air pressure≥6Bar
Precipitator fire protection systems
N2 max stress 1.0Bar
Probably consumption of pellets：
For new machines pellets projectile velocity of 78 m / s, the general value per 1KW power installation is 0.2kg (12 * 90kw $ 0.2kg / kw = 216kg / h)
Pills quantity and quality required:
First pellets loading capacity 75000kg 42-50HRC
Shot average hardness

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