Web Separating Blade for Papermaking Transfer Reliability
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Solution Overview
Problem
In paper or board machines, the transition of the web from the first web path to the second web path is not always reliable, leading to web scraps or thickening that cause the web to tear back into the first path, resulting in operational disruptions.
Innovation Solution
A web separating element, formed by a blade with a cutting edge, is positioned between 200 and 600 mm behind the deflection roller in the direction of the first web path to forcibly separate the web, ensuring it does not transfer to the second path, thus preventing web scraps from rejoining the first path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a suction roller is used to transfer the web from the first clothing to the second clothing, then the web transfer is achieved, but web scraps or thickening may cause the web to tear back into the first path
Solution Approach 1:
The web separating element (blade) extracts and removes web scraps and thickening from the web path by cutting them off, preventing these harmful factors from causing web tears and ensuring reliable web transfer between clothing elements
Solution Approach 2:
The web separating element acts as an intermediary component between the suction roller and the web path, actively removing harmful web scraps before they can cause problems, thus mediating between the transfer mechanism and the web quality
2Object-generated harmful factors
If the web separating element is positioned close to the suction roller, then web scraps are effectively separated, but the web bending length increases
Solution Approach 1:
The invention optimizes the positional parameter of the web separating element, placing it at a specific distance (200-600 mm) behind the suction roller in the web travel direction, balancing effective web scrap separation with minimal web bending length to maintain web quality and transfer efficiency
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 solution ensures a reliable transition of the web from the first to the second path, minimizing web bending length and preventing web scraps from rejoining the first path, thereby reducing operational disruptions and maintaining production efficiency.
Implementation Method 1
a deflection roller designed as a suction roller being provided, which is suitable for lifting the web (2) from the first clothing and in the direction of the second To deflect clothing
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
The invention relates to a device and a method for transferring a web within a papermaking or cardboard machine from a first treatment unit (11) with a circumferential first fabric (8), against which the web (2) bears within a first web running path (15), to a second treatment unit (13) with a circumferential second fabric (9), onto which the web (2) is transferred and is guided within a second web running path (17), wherein a deflection roller (7) is provided which is configured as a suction roller and is suitable for lifting up the web (2) from the first fabric (8) and deflecting it in the direction of the second fabric (9). In order to design the transfer to be more reliable, it is provided that a web separating element (4) is arranged in the web running direction downstream of the deflection roller (7) which is configured as a suction roller.