Bucket Elevator Bucket Geometry for Reduced Dust and Wear
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Solution Overview
Problem
Existing bucket elevator designs suffer from high material waste and dust generation during bulk material ejection due to inefficient ejection behavior.
Innovation Solution
A bucket design with a ratio of bucket depth to height greater than 1.3, a flat bottom, and a tethering device with a low tethering height, combined with a front bucket wall angle of inclination less than 50°, enhances ejection behavior by reducing centrifugal force requirements and preventing premature material ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional bucket shapes are used, then the buckets can convey bulk material, but they cause high material waste and high dust generation during ejection
Solution Approach 1:
The patent applies parameter changes by optimizing the geometric dimensions of the bucket, specifically setting the ratio of bucket depth to bucket height greater than 1.3, and configuring the front bucket wall angle of inclination between 0° and 50°. These parameter optimizations improve the ejection behavior of bulk material, reducing material waste and dust generation during discharge while maintaining effective material conveyance.
2Productivity
If high conveying speeds are used to eject material, then material can be discharged from the bucket, but it increases wear on the bucket and conveyor device
Solution Approach 1:
The patent optimizes geometric parameters including the bucket depth-to-height ratio greater than 1.3 and the front bucket wall angle of inclination between 0° and 50°, which enable effective material ejection at lower conveying speeds. This reduces the mechanical stress and wear on the bucket and conveyor device while maintaining productivity.
Solution Approach 2:
The patent configures the front bucket wall with a specific angle of inclination (0°-50°) that creates an optimized discharge surface. This angular configuration facilitates smooth material flow and ejection, reducing impact forces and wear on the conveyor device while maintaining effective material discharge.
3Force
If the bucket depth to height ratio is increased to improve ejection behavior, then centrifugal force requirements are reduced, but the bucket height must be sufficient to prevent premature ejection
Solution Approach 1:
The patent optimizes the bucket geometry by setting the depth-to-height ratio greater than 1.3 and the front bucket wall angle between 0° and 50°. This parameter configuration creates an optimal balance where the bucket is sufficiently deep to contain material during conveyance while having the appropriate geometry to enable effective ejection with reduced centrifugal force, preventing both premature ejection and excessive force requirements.
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 improved ejection behavior results in reduced material waste and dust generation, allowing effective material discharge at low conveying speeds while minimizing wear on the bucket and conveyor device.
Implementation Method 1
the bucket exhibits particularly advantageous ejection behavior in that only low centrifugal force is required to effectively eject the material picked up in the bucket
Data Source
AI summary
A bucket and a corresponding bucket elevator, the bucket has a bucket wall surrounding a filling and discharge opening and having a rear wall and a front bucket wall, the front bucket wall having a front edge delimiting the filling and discharge opening, and the bucket being connectable to a conveyor device via the rear wall, wherein the ratio between the bucket depth, which corresponds to the horizontal distance between the rear wall and the front edge, and the bucket height, which corresponds to the vertical distance between a bucket low point and the front edge, is greater than 1, preferably greater than 1.3, more preferably greater than 1.5.