Segmented Screen Centrifuge Sieve for Wear Reduction
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Solution Overview
Problem
Screen segments in screen centrifuges experience high wear in the material feed zone, leading to frequent replacements, while other areas remain usable for longer, resulting in suboptimal service life and increased assembly, material, and cost burdens.
Innovation Solution
Designing screen segments into multiple independently mountable parts, with an inlet segment part and an outlet segment part, allowing for selective replacement and extension of service life, where the inlet segment part can be replaced without affecting the less-worn outlet segment part, and vice versa, optimizing the utilization of the screen segment's longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sieve segments are designed as single integrated parts, then manufacturing and assembly are simpler, but service life is reduced due to high wear in the material feed zone requiring replacement of entire segments
Solution Approach 1:
The sieve segment is divided into multiple independently replaceable parts along the transport direction, with the inlet segment part (subject to high wear) being separable from the outlet segment part. This allows the worn inlet part to be replaced while retaining the less-worn outlet part, thereby extending overall service life without significantly complicating manufacturing and assembly processes.
2Reliability
If sieve segments are replaced frequently due to high wear in the material feed zone, then reliability is maintained, but loss of time and increased costs occur due to replacement of still-usable areas
Solution Approach 1:
By segmenting the sieve segment into independently replaceable parts, the inlet segment part can be replaced individually when worn, while the outlet segment part remains in use. This maintains reliability by ensuring the sieve surface is always functional where needed, while minimizing time loss by avoiding replacement of still-usable portions.
Solution Approach 2:
The inlet segment part is discarded when worn, but the outlet segment part is recovered and retained for continued use. This selective discarding and recovering approach reduces the frequency of replacements and minimizes time loss while maintaining the necessary reliability of the sieving function.
3Object-affected harmful factors
If sieve segments are replaced frequently, then wear damage is addressed, but loss of substance and increased costs occur due to disposal of still-usable material
Solution Approach 1:
Segmenting the sieve segment allows the worn inlet part to be separated and replaced while the less-worn outlet part is retained. This prevents waste of still-usable sieve material by avoiding disposal of the entire segment, thereby reducing substance loss and associated costs while effectively addressing wear damage.
Solution Approach 2:
The worn inlet segment part is discarded, but the less-worn outlet segment part is recovered and reused. This selective approach minimizes substance loss by keeping usable material in service longer, while still effectively addressing wear damage in the critical inlet zone.
Data Source
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AI summary
The invention relates to a sieve segment for mounting in a conical support basket (10, 20) of a screening centrifuge and for forming a sieve basket composed of several sieve segments within the support basket (10, 20) of a screening centrifuge, having an inlet side and an outlet side, wherein the sieve segment widens in the direction of transport of the material being screened, corresponding to an angular segment of the conical shape of the support basket (10, 20), from an inlet edge for arrangement on the inlet side of the screening centrifuge to a wider outlet edge for arrangement on the outlet side of the screening centrifuge, wherein the sieve segment is formed in the direction of transport of the material being screened as a multi-part structure consisting of at least two independently mountable segment parts, wherein the sieve segment comprises at least one inlet segment part (12b, 22b, 32b) with the inlet edge for arrangement on the inlet side and one outlet segment part (12a, 22a, 32a) with the wider outlet edge for placement on the outlet side,in particular that the sieve segment is designed in two parts in the transport direction of the material being sieved.