The revolving chambers allow maximum blast exposure and virtually eliminate blast shadows resulting in quicker cycle times.
A unique seal design protects against abrasive leakage at the top, bottom and sides of the chambers. Whenever the chamber is revolving to its next position, the abrasive flow is interrupted until the chamber stops rotating.
A large service door at the rear of the machine allows easy access to the blast area and blast wheels for inspection and maintenance.
Dual Purpose Versatility with Hanger Table Machines
Encompassing both a rotating spindle and table, Disa’s Hanger Table machines are true, dual purpose workhorses. Capacity is increased with 1000kgs on the hook and up to 2000kgs on the table.
The unique mounting of the Blast Wheels enable them to oscillate for maximum abrasive pattern angles up to 30 degrees while
blasting and part exposure. Electrically controlled with an adjustable timer, the pivoting action is powered by a pneumatic cylinder. The system can also be integrated into an overhead rail system for added versatility.
Q:Why is it necessary to add explosion proof measures to the dust collector when shot blasting aluminum magnesium workpieces?
A:During the aluminum-magnesium alloy workpiece shot blasting process, dust explosion risks remain critical safety hazards in the metal processing industry. Unprotected dust collection systems may become key ignition sources: When unprotected dust collectors experience deflagration, instantaneously generated overpressure shockwaves will cause equipment shell rupture, allowing high-temperature flames and explosive fragments to directly impact operational areas. This severely threatens personnel safety, and may damage production facilities and building structures. Therefore, establishing comprehensive explosion protection systems for dust collectors constitutes essential safety assurance.
The core objectives of systematic explosion prevention solutions lie in rapidly containing deflagration progression while achieving dual protection of personnel safety assurance and economic loss minimization. The safety protection mechanism operates through two-level response:
Initial explosion suppression phase: Passive protection systems activate immediately upon detecting explosion precursors
Secondary protection phase: Block deflagration chain reactions to prevent secondary disasters
Industrial-grade passive protection systems implement safety control through pressure threshold response mechanisms, primarily comprising four technical modules:
I Pressure Release System
• Conventional venting devices: Discharge overpressure through specially designed vents
When dust ignition occurs inside the collector, internal pressure rapidly rises to preset thresholds, triggering instant vent valve activation. This directs explosion pressure waves and flame fronts to predetermined safety zones, representing the most widely adopted industrial explosion prevention configuration.
• Flameless venting system: Enhanced protection components
By installing flame suppression modules on standard vents, chemical retardants extinguish flames during pressure release, enabling indoor system installation while eliminating secondary ignition risks.
II Pressure Isolation System
Pipeline isolation valves achieve protection enhancement through mechanical linkage mechanisms:
• Maintain full-open status during normal operations to ensure ventilation efficiency
• Activate mechanical locking mechanisms within 20ms upon deflagration detection, sealing pipeline pathways
This equipment effectively blocks flame and pressure wave backflow through duct networks into production areas, establishing physical isolation barriers.
III Integrated Monitoring Filters
As terminal protection components, integrated safety monitoring filters provide dual safeguards:
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