Device and Its Use for Dry Ice Blasting

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a specially designed device and method for centrifugal blasting, particularly using sensitive blasting media such as dry ice pellets. The device uses a rotary wheel with throwing blades and features a unique pre-acceleration and acceleration housing to ensure gentle handling and effective acceleration of the dry ice before it is ejected at high speed. The system minimizes the risk of damaging the dry ice and ensures efficient and controlled blasting, while reducing operational costs compared to traditional compressed air systems.

Use CasesContent extracted from patent full text and abstract with AI.

• Surface cleaning and preparation in automobile, aerospace, and shipbuilding industries (e.g., bumpers, car bodies, aircraft fuselages)
• Cleaning molds in casting and food production industries
• Degreasing of extruded semi-finished products
• Automated pre-treatment of plastics and metal components before painting or bonding
• Efficient surface treatment of large quantities of small, accessible parts

BenefitsContent extracted from patent full text and abstract with AI.

• High throughput of blasting media, allowing for efficient surface processing
• Gentle and careful handling of delicate blasting materials like dry ice, reducing sublimation and media loss
• Significant reduction in investment and operational costs (no need for expensive compressed air systems)
• Much higher energy efficiency compared to pneumatic systems (up to 80% vs 2%)
• Improved automation potential for industrial processes
• Precise and easily adjustable jet direction for targeted cleaning or treatment
• Low-wear and lightweight construction possible due to the low abrasiveness of the blasting media

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Inventors & Applicants

Patent Abstract

The device has a rotary spinner, which exhibits throw shovels (14) that are distributed over the circumference. An acceleration cover (12) rotates with the rotary spinner. A supply or dosing device is provided for supplying the dry ice into the acceleration cover. The supply or dosing device has a pre-acceleration cover (15), and exhibits an inner geometry extending to the throw shovels for axial and radial pre-acceleration of the dry ice at the throw shovel. The acceleration cover is designed as a cylindrical circular body, which is provided with a radial passage opening. An independent claim is also included for a method for centrifugal blasting of dry ice.