Screening Device Axial Basket Clamping Mechanism
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Solution Overview
Problem
Existing screening devices in the paper industry are labor-intensive and prone to assembly errors due to their complex designs and large number of parts, which increases manufacturing costs and time.
Innovation Solution
A screening device with a cylindrical screening basket and a support sleeve featuring two separate screening baskets axially connected by a variable-diameter intermediate ring, which centers and fixes the baskets within the support sleeve, reducing the number of assembly components and preventing relative movement through a rotation-locked mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex design with many parts is used to ensure stability and proper functioning, then reliability is improved, but device complexity increases and assembly becomes more difficult
Solution Approach 1:
The patent combines multiple support elements into a single integrated support sleeve structure that surrounds and stabilizes the screening basket. The support sleeve incorporates radial support surfaces and axial positioning features in one unified component, reducing the total number of parts while maintaining structural stability and reliability.
Solution Approach 2:
The support sleeve serves multiple functions simultaneously: it provides radial support to the screening basket, positions the basket axially at the correct location, prevents rotational movement, and guides assembly. This multi-functional design reduces the need for separate components for each function, simplifying the overall device while ensuring reliable operation.
2Reliability
If more components are used to prevent assembly errors and ensure proper positioning, then reliability is improved, but ease of manufacture deteriorates
Solution Approach 1:
The support sleeve is pre-designed with integrated positioning features including radial support surfaces and axial stopping surfaces that automatically guide the screening basket into the correct position during assembly. This preliminary incorporation of positioning functionality ensures assembly accuracy without requiring additional separate components or complex assembly procedures.
Solution Approach 2:
The support sleeve's geometric features automatically perform positioning and alignment functions during assembly. The radial and axial surfaces create self-aligning conditions where the screening basket naturally positions itself correctly when installed, eliminating the need for additional alignment components or complex adjustment procedures.
3Ease of repair
If a unitary screening device structure is used, then ease of replacement is improved, but adaptability to different screening tasks deteriorates
Solution Approach 1:
The screening device is divided into separable components: the screening basket can be independently removed and replaced from the support sleeve. This segmentation allows the screening basket to be exchanged for different models or configurations to match various screening tasks, while the support sleeve remains as a reusable base structure, combining ease of replacement with operational versatility.
Data Source
AI summary
A screening device for fibrous stock suspensions of the paper industry includes at least two separate screening baskets which are connected axially behind one another in the interior of a reinforcing device in the form of a back-up cylinder. A variable-diameter intermediate ring is arranged between the screening baskets. The reinforcing device has a cover part and a bottom part. By way of axial tensile force loading of the arrangement, the intermediate ring is loaded so as to bear radially in the circumferential direction in a gap-free manner against the associated axial ends or screening basket flanges of the screening baskets. The screening baskets are then clamped and fixed in a centrally positioned manner by the intermediate ring in cooperation with the end-side flange of the reinforcing device, the cover part, the bottom part and the intermediate ring.