Rotating Disc Abrasive Supply Apparatus
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Solution Overview
Problem
Conventional apparatuses for supplying abrasives to blasting machines face challenges in maintaining a constant abrasive flow due to variations in abrasive measurement accuracy, fluidity issues with elastic abrasives, and increased operating costs, particularly when dealing with elastic abrasives and varying grain sizes, which affect processing precision and efficiency.
Innovation Solution
The apparatus employs a rotating disc with through-holes embedded entirely within the abrasive tank, ensuring consistent abrasive collection and transport, using compressed gas to maintain fluidity and prevent aggregation, and allowing simultaneous supply to multiple blasting guns with reduced component complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a drum with V-shaped measuring grooves or bottomed measuring holes is used to measure abrasives, then the abrasive supply amount can be controlled, but the measurement precision deteriorates due to aggregation and fluidity issues with elastic abrasives
Solution Approach 1:
The patent uses through-holes formed in a rotating disc to measure and transport abrasives. The through-holes allow abrasives to pass through consistently regardless of their fluidity or aggregation state, providing accurate measurement without the problems associated with V-shaped grooves or bottomed holes. This porous structure enables reliable quantitative supply of elastic abrasives.
Solution Approach 2:
The patent transitions from using surface-level measuring grooves or shallow bottomed holes to using through-holes that penetrate the entire disc thickness. This dimensional change allows abrasives to be measured and transported through the full depth of the disc, ensuring consistent measurement accuracy regardless of abrasive properties.
2Productivity
If compressed air is used to transport abrasives through a flow channel, then the abrasives can be ejected from the blasting gun, but the abrasive flow becomes unstable due to variations in abrasive amount
Solution Approach 1:
The rotating disc with through-holes provides a consistent, predetermined amount of abrasives to the compressed air flow channel with each rotation. This feedback mechanism ensures that the abrasive supply rate remains constant, stabilizing the mixed fluid ejection from the blasting gun regardless of variations in the abrasive reservoir level or properties.
Solution Approach 2:
The through-holes in the rotating disc pre-measure and pre-portion the abrasives before they enter the compressed air flow channel. This preliminary action ensures that the correct amount of abrasives is prepared in advance, preventing flow instability in the final ejection mixture.
3Quantity of substance
If elastic abrasives are stored in the abrasive tank, then they can be supplied to the blasting machine, but they aggregate and lose fluidity affecting supply consistency
Solution Approach 1:
The rotation of the disc with through-holes creates mechanical disturbance and vibration in the abrasive bed, preventing elastic abrasives from aggregating and maintaining their fluidity. This continuous motion keeps the abrasives loose and free-flowing, ensuring consistent supply to the measuring holes.
Solution Approach 2:
The through-holes in the rotating disc create a porous measurement structure that allows abrasives to pass through easily regardless of their aggregation tendency. This porous design maintains operational ease by enabling consistent abrasive flow even with elastic materials that naturally aggregate.
4Device complexity
If multiple blasting guns are supplied from a single apparatus, then the system complexity is reduced, but the measurement precision for each gun deteriorates
Solution Approach 1:
The rotating disc is divided into multiple through-holes arranged in different radial directions, with each through-hole serving a specific blasting gun. This segmentation allows each gun to receive precisely measured abrasives through its dedicated hole while sharing the common rotating disc mechanism, maintaining both simplicity and precision.
Solution Approach 2:
The single rotating disc performs multiple functions by serving several blasting guns simultaneously through its multiple through-holes. Each hole acts as an independent measurement and supply channel, allowing the universal disc structure to maintain precise measurement for each individual gun while reducing overall system complexity.
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 ensures accurate and constant abrasive supply to blasting guns, reducing operational costs and maintaining precision regardless of abrasive grain size changes, while preventing fluidity issues and aggregation, thus enhancing processing reliability and efficiency.
Implementation Method 1
introduction paths (17) for introducing compressed gas, wherein one end (17a) of the introduction paths (17) communicates with a compressed-gas supply source (not shown) outside the casing (2) of the tank so that the compressed gas is intermittently introduced into the tank (10) through the introduction paths (17)
Implementation Method 2
a rotating disc (20) having a plurality of through-holes formed therein so as to penetrate the rotating disc (20) in a thickness direction of the rotating disc (20)
Implementation Method 3
a supply channel (12) for a transport air flow, the supply channel (12) communicating with an external compressed-gas supply source
Data Source
AI summary
An apparatus for supplying a constant amount of abrasives that can accurately control the amount of the abrasives to be supplied to a blasting machine is provided. A horizontally rotating disc 20 is provided in an abrasive tank 10 so as to be embedded in the abrasives. An opening at one end 11a of an abrasive transport path 11 is formed so as to be close to or in contact with one surface of the disc 20, an opening at one end 12a of a supply channel 12 for transport air flow is formed so as to be close to or in contact with the other surface of the disc 20, and an abrasive retrieve section 5 is formed between the both openings. Furthermore, measuring holes 21 penetrating the disc 20 in the thickness direction are formed at regular intervals along a rotation orbit of the disc 20 passing through the retrieve section 5, and an introduction path 17 for compressed gas which is ejected to the abrasives disposed above the measuring holes 21 and outside the retrieve section 5 is provided.