Web Forming Drum With Through Holes For Powder Supply
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Solution Overview
Problem
Existing web forming apparatuses face issues with damage to transportation components due to the contact of solid additives, which can lead to inefficiencies and equipment damage.
Innovation Solution
A web forming apparatus that includes a supplying unit for powder, a drum portion with through holes to accommodate fibers and powder, and a web forming unit that forms a web by allowing the mixture of fibers and powder to accumulate, reducing contact with the transportation surface and minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solid additive is transported inside the transportation portion, then the additive can be delivered to the sieve, but the transportation portion may be damaged due to contact of the additive with the inner surface
Solution Approach 1:
The harmful solid additive is extracted from the transportation path by delivering it directly to the drum portion's accommodating chamber through the outlet portion, bypassing the transportation portion's inner surface entirely. This eliminates the contact between the additive and transportation portion, preventing damage while maintaining delivery functionality.
Solution Approach 2:
The drum portion with its accommodating chamber and through holes serves as an intermediary device. The additive falls through the through holes under gravity into the accommodating chamber, using the drum portion as a mediator to transfer the additive from the outlet portion to the sieve without direct contact with the transportation portion's inner surface.
2Object-affected harmful factors
If powder is supplied vertically over the drum portion through through holes, then contact with transportation surface is reduced, but the supplying mechanism becomes more complex
Solution Approach 1:
The supplying unit utilizes gravity as a natural force to deliver the powder vertically through the through holes into the accommodating chamber. This self-service approach eliminates the need for complex mechanical transportation mechanisms, reducing device complexity while effectively minimizing contact damage to the transportation surface.
Solution Approach 2:
The drum portion is designed with through holes that allow the powder to pass through vertically. This porous structure enables the powder to be delivered directly into the accommodating chamber without requiring complex sealing or guiding mechanisms, simplifying the overall supplying unit structure while protecting the transportation surface.
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 effectively reduces damage to the apparatus and enhances the formation of web materials by allowing powder to fall through the drum's through holes, improving the manufacturing process and product quality.
Implementation Method 1
the outlet portion is provided vertically over the peripheral surface of the drum portion, and the supplying unit supplies the powder to the accommodating chamber through the through holes by letting the powder fall from the outlet portion
Data Source
AI summary
A web forming apparatus includes a drum portion and a second web forming unit. The drum portion has an accommodating chamber capable of accommodating fragments, and accommodating powder supplied from a first supplying unit. The second web forming unit forms a second web by letting a mixture containing the fragments and the powder falling from the drum portion accumulate. The first supplying unit includes a storing chamber for storing the powder and an outlet portion provided below the storing chamber. The powder goes out of the storing chamber via the outlet portion. The drum portion has meshes formed in a net demarcating the accommodating chamber. The powder is able to pass through the meshes. The outlet portion is provided vertically over the net of the drum portion.