Roller Press Annular Disc Segmentation for Material Escape
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Solution Overview
Problem
Existing roller presses for grinding particulate materials face issues with material buildup and wear due to complex constructions, where the annular disc can get stuck and suffer from excessive wear, leading to potential damage and malfunction.
Innovation Solution
The roller press design features an annular disc with an inner diameter smaller than the roller, with resilient attachment elements evenly distributed and having spaces or openings, allowing material to escape and preventing the disc from getting stuck, while the attachment elements can move axially to manage forces and reduce wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the annular disc is spring-loaded to allow axial movements, then the roller press can handle hard material particles and inclined roller positions, but material builds up in the area where the annular disc meets the roller, causing the disc to get stuck
Solution Approach 1:
The annular disc is segmented into multiple sections along its circumference, creating gaps between sections that allow material to escape from the area between the disc and roller, preventing material buildup and disc sticking while maintaining the spring-loaded adaptability
Solution Approach 2:
The harmful material buildup is extracted by providing escape paths through the segmented structure and spaces between resilient attachment elements, allowing material to be removed from the critical area where the annular disc meets the roller
2Reliability
If the annular disc overlaps extensively with the opposite roller end surface, then the roller gap is covered, but extensive wear occurs in the overlap area
Solution Approach 1:
Segmenting the annular disc reduces the continuous contact area with the roller, distributing wear across multiple smaller contact zones and allowing material escape paths that reduce pressure and wear in any single area
Solution Approach 2:
The spring-loaded resilient attachment elements provide dynamic adjustment, allowing the annular disc sections to move axially and maintain optimal contact pressure, reducing excessive wear while ensuring adequate roller gap coverage
3Productivity
If material is restricted in the roller gap area, then lateral material flow is limited, but material settles on spring windings and restricts axial movement of the annular disc
Solution Approach 1:
The segmented annular disc structure creates escape paths for material, preventing material from settling on the spring windings and maintaining axial movement freedom while still restricting lateral material flow to improve grinding efficiency
Solution Approach 2:
The gaps between resilient attachment elements act as intermediary escape paths, allowing material to bypass the spring-loaded mechanism without restricting its axial movement function
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 design prevents material buildup and structural damage by allowing material to flow away, reducing the risk of the annular disc getting stuck and minimizing wear on the resilient attachment elements, ensuring smooth operation and extended component lifespan.
Implementation Method 1
resilient attachment elements which are evenly distributed over the circumference of the annular disc and provided with spaces or openings there between
Data Source
AI summary
A roller press (1) is described for grinding of particulate material such as cement raw materials, cement clinker and similar materials, which roller press (1) comprises two oppositely rotating rollers (2, 3) forming between them a roller gap (4) and a co-rotating annular disc (5), which in concentric manner is attached to an end surface (6, 7) of one of the rollers (2) by means of a number of resilient attachment elements (8) and being movable in the direction of the roller axis, where the outer diameter of said annular disc (5) is greater than the diameter of said one of the rollers (2), hence the annular disc (5) in the area of the roller gap (4) extends toward the other roller (3), thus covering at least part of the roller gap (4). The roller press (1) is peculiar in that the inner diameter of the annular disc (5) is smaller than the diameter of the roller (2), to which it is attached, thus overlapping the end surface (6, 7) of said roller (2), and that the resilient attachment elements (8) are evenly distributed over the circumference of the annular disc (5) and provided with spaces or openings (10) there between.It is hereby obtained that the annular disc (5) does not get stuck by material to be grinded or destructive forces damaging construction parts are not accumulated. This is due to the fact that material in the roller press (1) according to the invention is allowed to escape from the area between the annular disc (5) and the roller (2) to which it is attached.