Abrasive Wheel Ventilation Device for Heat and Particle Management
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Solution Overview
Problem
Existing abrasive wheels face issues with excessive heat generation and particle accumulation during tire retreading, leading to premature wear and potential fire hazards due to ineffective airflow distribution and particle agglomeration.
Innovation Solution
A ventilation device integrated into the abrasive wheel, featuring an annular body and blades arranged radially, creates powerful airflows that cool the abrasive surface and the surface being abraded, effectively removing abraded particles through suction and expulsion, preventing agglomeration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If orifices are made in the abrasive surface to provide airflow, then particle accumulation is reduced, but the airflow does not actually cool the abrasive surface or the surface to be abraded
Solution Approach 1:
The ventilation device divides the airflow path into multiple segments: air intake through openings in the circular body, airflow guidance through the inner space, and directed exhaust through orifices in the abrasive surface. This segmentation ensures that airflow is channeled effectively to cool both the abrasive surface and the workpiece, rather than creating uncontrolled circulation
Solution Approach 2:
The ventilation device acts as an intermediary system between the air intake openings and the abrasive surface. It includes an inner space with openings that guide airflow, and a ventilation element (such as a turbine or fan) that actively directs air toward the abrasive surface and workpiece, ensuring effective cooling
2Use of energy by moving object
If holes are made in the edge of the grinding wheel to increase airflow, then air intake is improved, but abraded particles are not sufficiently removed and fouling continues
Solution Approach 1:
The ventilation device utilizes pneumatic principles by creating a controlled airflow system. Air is drawn through openings in the circular body, guided through the inner space, and expelled through orifices in the abrasive surface. This pneumatic flow actively removes abraded particles from the abrasive grains, preventing fouling while maintaining effective air circulation
Solution Approach 2:
The ventilation device performs preliminary action by removing abraded particles before they can accumulate and clog the abrasive surface. The continuous airflow through the inner space and out through the abrasive orifices prevents particle saturation, maintaining abrasive effectiveness throughout the wheel's service life
3Shape
If tabs are folded inwards to direct airflow towards the lower surface of the rim, then airflow direction is improved, but the tabs are not sufficient to create airflow turbulence towards the surface to be abraded
Solution Approach 1:
The ventilation device introduces dynamic elements such as rotating turbines, fans, or adjustable vanes within the inner space. These dynamic components actively generate turbulent airflow that is directed toward the abrasive surface and workpiece, ensuring effective cooling rather than relying on static tab structures
Solution Approach 2:
The ventilation device may incorporate vibrating or rotating elements that create mechanical disturbance in the airflow. This vibration or rotation generates turbulence that enhances cooling effectiveness by disrupting boundary layers and improving heat transfer from both the abrasive surface and the workpiece
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
The ventilation device maintains low temperatures and cleanliness of the abrasive surface and the surface being abraded, extending the wheel's service life and preventing fires by efficiently removing abraded particles.
Implementation Method 1
the ventilation device... creates powerful airflows capable of cooling the abrasive surface and the surface to be abraded
Implementation Method 2
The rising temperature of the abraded particles, which become soft and sticky, makes it more difficult for them to be removed by centrifugal force
Implementation Method 3
effectively removing abraded particles through suction and expulsion
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a ventilation device for an abrasive wheel, the abrasive wheel (4) comprising a hollow circular body, a hub intended to be attached to a drive motor shaft, the circular body comprising an abrasive outer surface (6) comprising openings (7), an inner surface (8) and an inner space defined by the inner surface (8), the ventilation device comprising an annular body (21) and at least one blade (3) that is arranged radially with respect to the annular body (21), the ventilation device (1) being capable of being located within the inner space of the abrasive wheel (4) and the annular body (21) being capable of being rigidly attached to the hub of the abrasive wheel (4) or to the circular body at the periphery of the hub of the abrasive wheel (4).