Shot Blaster Blast Wheel Housing Cooling and Shot Containment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Shot blasters experience elevated temperatures due to friction, leading to warpage of the blast wheel housing and reduced lifespan, with existing heat vent solutions posing safety risks and inefficiencies.
Innovation Solution
A fan is mounted outside the housing to dissipate heat through airflow across the mounting plate and bearing, with angled walls directing heat away from the chamber and incorporating vents to enhance cooling, optionally combined with a semi-permeable liner to manage airflow and protect internal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat vents are added to the housing to allow hot gases to escape, then heat dissipation is improved, but shot can escape through the vents causing safety hazards and damage
Solution Approach 1:
A semi-permeable liner is introduced as an intermediary component between the interior chamber and the exterior environment. This liner selectively permits heat transfer while blocking shot particles, resolving the contradiction between heat dissipation needs and shot containment requirements
Solution Approach 2:
A semi-permeable liner is used to create selective permeability in the housing structure. The liner's porous or mesh structure allows thermal energy to pass through while physically blocking solid shot particles, enabling heat venting without shot escape
2Productivity
If the blast wheel housing is designed to contain and direct shot, then shot blasting effectiveness is improved, but friction heat causes warpage of the housing
Solution Approach 1:
The semi-permeable liner acts as a thermal intermediary that facilitates heat transfer from the interior chamber to the exterior environment. This prevents heat accumulation that would cause warpage, while maintaining the housing's structural integrity and shot containment function
Solution Approach 2:
The housing design incorporates parameters that optimize heat transfer efficiency, such as wall thickness, material thermal conductivity, and surface area for heat dissipation. These parameter changes enable the housing to withstand friction heat without warping while maintaining shot blasting effectiveness
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
Effectively reduces heat buildup in the blast wheel housing, preventing warpage and extending the lifespan of the blast wheel while maintaining safety by controlling temperature and airflow.
Implementation Method 1
A fan is directed to create airflow across the exterior surface of the mounting plate and around the bearing. This fan dissipate heat from the interior of the chamber.
Implementation Method 2
the air passing over the exterior surface of the mounting plate and around the bearing draws heat away from these structures creating a greater temperature differential that causes heat from inside of the interior chamber to be transmitted to the outside through the mounting plate and bearing
Implementation Method 3
the wall directs heat generated by the first motor away from the area of the housing immediately adjacent the interior chamber of the housing
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A shot blaster comprising; a housing defining an interior chamber (52), the housing (23) comprising a mounting plate which comprises an interior surface (56) facing the interior chamber (52), an exterior surface (58), and a drive shaft orifice (60). A blast wheel (14) that coupled to a drive shaft (62) and positioned within the interior chamber (52) of the housing (23) and extending from the blast wheel (14) through the drive shaft orifice (60. A bearing (64) mounted to the exterior surface (58) of the mounting plate (54), surrounding a portion of the drive shaft (62) and closing the drive shaft orifice (60). A first motor (13) coupled to the drive shaft (62); a wall (72) extending at an angle to the mounting plate (54) adjacent the bearing (64) and at least one first vent adapted to provide airflow to dissipate heat from the interior of the chamber.