Mobile pneumatic blast units
Overall description
Mobile pneumatic blast units for dry blasting are used for cleaning, pre-treatment, and treatment of surfaces of various products both in blast rooms with abrasive back haul and for open area assembly operations blasting.
Blast unit construction allows most common types and sizes of abrasives to be used - i.e. metallic (steel grit abrasive) and non-metallic (sand, slag, and corundum). The type and size of the abrasive depends on the base material of treated components, their original surface, and the required final coating.
A blast unit attendant, wearing safety blasting devices, controls the blasting process with a pneumatic safety remote control placed at the end of jet hose. This system has the ON/OFF positions, and it controls the closing valve of the tank filling mouth. If the jet machine, part of which is the jet unit, has an automatic abrasive back haul (blast room), the attendant controls the blast unit tank filling with the remote control.
Technical data
| Type | DBS-100RCS | DBS-200RCS | ||
|---|---|---|---|---|
| Maximum working over-pressure | MPa | 1 | 1 | |
| Optimum working over-pressure | MPa | 0,4 - 0,8 | 0,4 - 0,8 | |
| Pressure tank capacity | litr | 100 | 200 | |
| Maximum pressure tank filling | ||||
| Metallic abrasive | kg | 300 | 600 | |
| Non-metallic abrasive (sand, corundum) | kg | 136 | 272 | |
| Unit height with sive | mm | cca 1350 | cca 1600 | |
| Tank diameter | mm | 508 | 610 | |
| Wheel diameter | mm | 250 | 350 | |
| Unit weight | kg | cca 125 | cca 155 | |
| Compressed air connection | ||||
|
6/4" | 6/4" | ||
| Compressed air consumption of a jet (p = 0.6 MPa) | ||||
|
m3.hr-1 | 193 | 193 | |
|
m3.hr-1 | 275 | 275 | |
| Remote control | pneumatic, safety | |||
| Labour capacity – actual blasting time | m2.hr-1 | 6-37 | 6-37 | |
Safety devices
According to user’s wish, jet units are delivered with complete safety device sets for the machine attendant:
- safety jetting helmet
- jetting clothing
- breathing filter with active carbon
- air-conditioning unit
Safety devices list can be found at here.
Spare parts
All spare parts and standard accessories are permanently available.
List of spare parts may be found here.
Consumption
The volume of metallic abrasive
The volume of metallic abrasive is given in kg/hr, depending on the inner diameter of the nozzle and the compressed air pressure in the nozzle.
| Inner diameter | Nozzle pressure (MPa) | ||||
|---|---|---|---|---|---|
| nozzle (mm) | 0,45 | 0,52 | 0,6 | 0,68 | 0,75 |
| 6,5 | 360 | 400 | 460 | 510 | 560 |
| 8 | 620 | 680 | 760 | 840 | 920 |
| 9,5 | 860 | 980 | 1090 | 1190 | 1310 |
| 11 | 1170 | 1340 | 1490 | 1640 | 1800 |
| 12,5 | 1520 | 1720 | 1900 | 2100 | 2300 |
The volume of non-metallic abrasive
The volume of non-metallic abrasive is given in kg/hr, depending on the inner diameter of the nozzle and the compressed air pressure in the nozzle.
| Inner diameter | Nozzle pressure (MPa) | ||||
|---|---|---|---|---|---|
| nozzle (mm) | 0,45 | 0,52 | 0,6 | 0,68 | 0,75 |
| 6,5 | 180 | 200 | 230 | 255 | 280 |
| 8 | 310 | 340 | 380 | 420 | 460 |
| 9,5 | 430 | 490 | 545 | 595 | 655 |
| 11 | 585 | 670 | 745 | 820 | 900 |
| 12,5 | 760 | 860 | 950 | 1050 | 1150 |
Approximate compressed air consumption
The compressed air consumption is given in m3/hr, depending on the inner diameter of the nozzle and the compressed air pressure in the nozzle.
| Inner diameter | Nozzle pressure (MPa) | ||||
|---|---|---|---|---|---|
| nozzle (mm) | 0,45 | 0,52 | 0,6 | 0,68 | 0,75 |
| 6,5 | 92 | 104 | 116 | 126 | 138 |
| 8 | 152 | 172 | 193 | 215 | 234 |
| 9,5 | 215 | 244 | 275 | 295 | 334 |
| 11 | 290 | 331 | 370 | 409 | 433 |
| 12,5 | 382 | 430 | 477 | 527 | 576 |