Centrifugal Abrasive Shooter Impeller Segmentation
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Solution Overview
Problem
Conventional machines for centrifugally shooting abrasives face difficulties in replacing side liners and blades due to their large and heavy impeller design, making the process cumbersome and time-consuming.
Innovation Solution
The machine features a U-shaped side liner with a divisible upper part detachably attached to the cover and a hub-mounted impeller with a diameter limited to 200 mm, allowing for easier replacement of liners and blades by simplifying the attachment and detachment process through screw mechanisms and optimized size and speed settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the impeller is made large to increase abrasive shooting performance, then the shooting effectiveness is improved, but the replacement of blades becomes troublesome and time-consuming
Solution Approach 1:
The impeller is segmented into a hub and multiple blades that can be independently removed. The blades are detachably attached to the hub, allowing individual blade replacement without replacing the entire impeller assembly. This segmentation enables easy maintenance while preserving the functional integrity of the complete impeller structure.
2Device complexity
If the liner is made as a single piece to simplify structure, then the device complexity is reduced, but the replacement of the liner becomes much more difficult and time-consuming
Solution Approach 1:
The liner is divided into multiple separate components including a bottom liner, side liners, and a cover liner. These segmented liner components can be independently installed and replaced, significantly reducing the time and effort required for liner replacement compared to a single-piece design, while still providing complete protection of the cover.
3Productivity
If the impeller diameter is increased to improve shooting performance, then the centrifugal force is enhanced, but the weight increases making the impeller heavy and difficult to handle
Solution Approach 1:
The impeller is constructed as an assembly of separate blades attached to a hub, allowing the blades to be removed and the hub to be handled independently. This segmentation reduces the effective weight that must be manipulated during maintenance operations, as individual blades can be detached without moving the entire heavy impeller assembly.
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
Enables efficient and streamlined replacement of side liners and blades, maintaining effective abrasive shooting performance with controlled speed and handling, reducing operational complexity and material costs.
Implementation Method 1
the abrasives are shot by the centrifugal force generated by the rotation of the impeller
Data Source
AI summary
A machine for centrifugally shooting abrasives that shoots the abrasives by rotation of an impeller is provided. In the machine, the impeller comprises a pair of disc-shaped side plates that face each other at a predetermined distance and a plurality of blades disposed between the side plates in the radial direction of the side plates. The impeller is mounted on a hub that is fitted into an output shaft of an electric motor. The impeller is covered by a cover. The side liner and blades of the machine can be easily replaced. A side liner 3 that is U-shaped with the longer side facing downward is detachably attached to the inner side of the cover 2. The upper part of the side liner is divisible into two parts. The side liner protects the side wall of the cover 2 from the abrasives that are shot from the impeller. The side liner has a U-shaped cross section. The impeller 1 is fixed to the hub 4 by screwing a bolt 15 on the hub 4 from the inner sides of the side plates 11. The diameter of the impeller 1 is limited to be 200 mm at maximum.