Backwash Filter Element Adjustment for Tolerance Compensation
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Solution Overview
Problem
Existing filter devices for lubricating oil purification in diesel engines face inefficiencies and reliability issues due to tolerance deviations during the backwashing process, leading to suboptimal cleaning and maintenance challenges.
Innovation Solution
A filter device with an adjustable backwash element and spindle drive system that compensates for tolerance deviations, ensuring optimal contact between the backwash element and filter material, enhancing cleaning efficiency and operational reliability through adjustable mechanisms like spindle drives and spring elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed backwash element is used, then the structure is simple, but cleaning efficiency is reduced due to tolerance deviations
Solution Approach 1:
The backwash element is made adjustable through a spindle drive mechanism, allowing it to dynamically adapt its position to compensate for tolerance deviations in the filter element. This transforms a static structure into a dynamic one that can self-adjust, resolving the contradiction between manufacturing precision and device complexity.
Solution Approach 2:
The distance between the backwash element and filter element can be adjusted by the spindle drive, changing the geometric parameter of the system. This parameter adjustment enables optimal contact despite manufacturing tolerances, improving cleaning efficiency without requiring extremely precise manufacturing.
2Adaptability or versatility
If manual adjustment is required, then operational flexibility is improved, but ease of operation deteriorates
Solution Approach 1:
The spindle drive mechanism is designed to be manually actuated from one side of the drive shaft, allowing the operator to adjust the backwash element position independently without disassembling the device. This self-adjustment capability provides operational flexibility while maintaining ease of use through a simple manual interface.
Data Source
AI summary
A filter device has a filter housing (1) having a fluid inlet (11) for unfiltered matter, a fluid outlet (19) for filtered matter and at least one filter element (7, 9) of one or more parts accommodated in the filter housing (1). The filter element can be cleaned using at least one backwash element (21) in counter current to the direction of filtration. The backwash element can be moved by a fluid-conveying drive shaft (20) of a rotary drive at the inside (17) of the relevant filter element (7, 9). At the end adjacent to this inside (17), a gap-shaped passage opening is parallel to the axis of rotation (16) of the drive shaft (20) and opens into a flow chamber connected to the drive shaft (20) in a fluid-conveying manner. The distance between the backwash element (21) and the adjacent assignable filter element (7, 9) can be predetermined by an adjustment device (27; 47).