Slotted Hollow Roller Structure for Stable Wash Bucket Drainage
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Solution Overview
Problem
Existing rollers used for washing tile boards with washing buckets are not stable enough and suffer from poor water drainage, leading to unwanted side overflow and reduced service life due to bending during the pressing-out process.
Innovation Solution
A hollow-body roller with a profiled outer surface featuring slot-shaped passage openings and a radial support element, along with axially extending and circumferential webs, provides improved stability and unhindered water flow, preventing bending and enhancing the stripping process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a hollow-body roller is used for water drainage, then water drainage efficiency is improved, but the roller becomes unstable and bends during pressing
Solution Approach 1:
The roller shell is segmented into multiple longitudinal slots that are distributed across the surface. This segmentation allows water to drain through multiple pathways simultaneously, improving drainage efficiency while the remaining structural material maintains roller stability.
Solution Approach 2:
The roller design implements local quality by creating slot regions with different drainage properties in different areas. The slots are strategically positioned to optimize water flow paths while maintaining structural integrity in critical load-bearing areas of the roller.
2Productivity
If the roller shell is made with large passage openings for water flow, then water drainage is improved, but the roller loses structural strength
Solution Approach 1:
Instead of one large opening, the roller shell is divided into multiple smaller longitudinal slots. This segmentation provides sufficient total drainage area while distributing the structural load across more material, maintaining roller strength.
Solution Approach 2:
The drainage function is extended into the longitudinal dimension by creating slots that run along the length of the roller. This dimensional approach increases the total drainage surface area without compromising the cross-sectional strength of the roller shell.
3Ease of operation
If the roller shell is made thin to reduce weight, then ease of operation is improved, but the roller becomes unstable and prone to bending
Solution Approach 1:
The thin roller shell is stabilized by the segmented slot structure, which creates a stiffened panel effect. The slots act as structural ribs that prevent buckling and bending while maintaining the thin-walled lightweight construction.
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 solution ensures efficient water drainage without side overflow, increases the roller's stability, and extends its service life by allowing the sponge board to rest evenly over the entire width, improving the stripping efficiency.
Implementation Method 1
The soiled water, which is pressed out of the sponge by pressing the sponge board on the roller, can flow quickly and largely unhindered through the hollow body roller into the washing bucket through the slot-shaped passage openings
Data Source
Figure 1~2
Figure 3~4
AI summary
The roller of two half-shells (1), to squeeze residue from a sponge board over a wash bucket, rotates on bearings at a stub axle (5) at or on the bucket edge. The roller has a profiled mantle surface with a number of elongated passage openings (3) and an inner radial support (2). The mantle surface has a netting structure of longitudinal (7) and lateral (8) bars.