Abrasive Blasting Device Pneumatic Recirculation
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Solution Overview
Problem
Existing abrasive blasting systems face inefficiencies due to high energy consumption, poor distribution of blasting abrasive mixture, and wear issues with centrifugal pumps, leading to non-uniform blasting results and limited use of fine-grained abrasives.
Innovation Solution
A device that uses compressed air to introduce and recirculate the blasting abrasive mixture, eliminating the need for a delivery pump and achieving uniform distribution through a static mixer or stirrer, allowing for a closed pressurized system that optimizes energy use and nozzle design for improved blasting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a centrifugal pump is used to deliver blasting abrasive mixture, then the blasting abrasive can be conveyed, but the pump is prone to high wear and requires high energy consumption
Solution Approach 1:
The invention extracts and eliminates the centrifugal pump from the system by using compressed air to deliver the blasting abrasive mixture through the delivery line directly to the blasting nozzle, removing the source of wear and high energy consumption
Solution Approach 2:
The invention uses compressed air (pneumatics) as the conveying medium to transport the blasting abrasive mixture through the delivery line, replacing the mechanical pump system and reducing both wear and energy consumption
2Productivity
If a centrifugal pump is used to deliver blasting abrasive mixture, then the mixture can be conveyed, but the delivery pump has high wear and requires polyurethane materials
Solution Approach 1:
The invention removes the centrifugal pump and its associated wear-prone components from the system, simplifying the overall device structure and eliminating the need for polyurethane materials in high-wear areas
Solution Approach 2:
By using compressed air to convey the mixture, the invention replaces complex mechanical pump components with a simpler pneumatic system that has fewer wear-prone elements
3Use of energy by moving object
If compressed air is used to force blasting abrasive into nozzles and recirculate mixture, then energy costs are reduced, but a closed pressurized system is required
Solution Approach 1:
The invention uses a closed pressurized system with compressed air to convey the blasting abrasive mixture, which enables energy-efficient operation while maintaining system control through pressure regulation
Solution Approach 2:
The recirculation line returns unused abrasive mixture to the blast pot, creating a feedback loop that optimizes material utilization and maintains consistent blasting performance while reducing energy consumption
4Productivity
If water and blasting abrasive are mixed in a pump, then the mixture can be delivered, but the water and granular material have different flow rates causing poor distribution
Solution Approach 1:
The invention uses compressed air to convey the water and blasting abrasive mixture through the delivery line, allowing both components to be transported together at the same speed, ensuring uniform distribution of the mixture throughout the blasting process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces energy costs by up to 80%, ensures uniform surface treatment, and allows for the effective use of fine-grained abrasives, enhancing blasting performance and extending the treated area with a more efficient and cost-effective process.
Implementation Method 1
compressed air is introduced above the blasting abrasive mixture provided in the blast pot by means of a pressure-generating means and the blasting abrasive thus being forced into the blasting nozzles
Implementation Method 2
the compressed air conveying the granular material or the granular material mixture and/or a suspension formed from granular material and liquid via a second line out of the blasting space and back into the blast pot
Implementation Method 3
achieving uniform distribution through a static mixer or stirrer
Data Source
AI summary
A device (33) for blast-machining or abrasive blasting objects such as structural elements, tools, household objects, pots, pans or the like, has a blast pot (3) for holding a blasting abrasive (35) which is connected via at least one line (21) to a blasting nozzle (24) which extends into a blasting space (1) in which the objects which are to be blasted can be placed. Compressed air is introduced above the blasting abrasive mixture (35) provided in the blast pot (3) by means of a pressure-generating means (43) and the blasting abrasive (35) thus being forced into the blasting space (1), the compressed air conveying via a second line (10) the granular material or the granular material mixture (35) and/or a suspension formed from granular material and liquid out of the blasting space (1) and back into the blast pot (3), which also takes the form of a pressurized space.