Filtering Unit Cover Assembly Segmentation for Wear Reduction
Solution Overview
Problem
Existing filtering units face inefficiencies due to wear and maintenance challenges, particularly with the cover assembly, which is expensive and prone to wear, leading to leakage and increased operational costs.
Innovation Solution
The introduction of a dividing plate that is detachably secured to the cover, allowing for separate design and manufacturing, reducing wear, and improving sealing by providing a distinct contact surface for the rotary backwashing distributor, thereby enhancing the overall efficiency of the filtering unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the distribution spacer is formed as an integral part of the cover, then the manufacturing process is simplified, but the cover assembly becomes prone to wear and leakage at the contact surface with the rotary backwashing distributor
Solution Approach 1:
The distribution spacer is separated from the cover and formed as a detachable dividing plate. This segmentation allows the dividing plate to be replaced independently when worn, while the cover can be reused. The dividing plate has apertures opening into distribution columns and provides a fresh contact surface for the rotary backwashing distributor, resolving the wear and leakage problem without complicating the overall manufacturing process.
2Device complexity
If the cover assembly is designed as a single integrated component, then the device structure is simplified, but maintenance cost and complexity increase due to inability to replace worn parts independently
Solution Approach 1:
The cover assembly is segmented into two main components: the cover and the detachable dividing plate. This allows the dividing plate to be replaced independently during maintenance without replacing the entire cover assembly. The dividing plate can be detached and replaced when worn, significantly reducing maintenance costs and simplifying repair operations while maintaining acceptable structural complexity.
3Reliability
If the shutter maintains continuous sliding contact with the cover, then sealing is maintained, but wear occurs at the contact surface leading to leakage
Solution Approach 1:
The dividing plate is designed as a replaceable component that can be easily detached and replaced when worn. Instead of making the entire cover wear-resistant, a relatively simple and inexpensive dividing plate is used as a sacrificial element that protects the main cover. When the dividing plate's contact surface wears, it is replaced rather than the entire cover assembly, extending the service life of the expensive cover while maintaining sealing performance.
Data Source
AI summary
A filtering unit includes a filtering component having a pre-filter chamber circumferentially compartmented in sectors, a filtering medium and a post-filtering chamber, a divider arranged coaxially with the filtering component and having distinct distribution columns, a cover and a rotary backwashing distributor having a shutter provided with a discharge opening. The rotary backwashing distributor is mounted to rotate so that the discharge opening is periodically and selectively put into communication with each distribution column. Each distribution column periodically and selectively establishes communication between the discharge opening and respective ones of the sectors. The filtering unit further includes a dividing plate arranged between the cover and the rotary backwashing distributor, the dividing plate being detachably secured with respect to the cover and having apertures opening into the distribution columns. The shutter abuts the dividing plate at least around the discharge opening.