Two-Stage Drum Coolant Filtration for Clog-Resistant Supply
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Solution Overview
Problem
Conventional filtration devices for coolant in machine tools are prone to clogging, require frequent cleaning, and incur high costs due to the need for regular filter changes and storage of sludge, making it difficult to supply clean coolant to both low-pressure and high-pressure systems effectively.
Innovation Solution
A filtration device comprising a primary conveyer tank with a primary drum filter and a secondary conveyer tank with a secondary drum filter, which allows for primary and secondary filtration stages, eliminating the need for frequent tank cleaning and enabling the supply of clean and super clean liquids to both low-pressure and high-pressure systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is provided in the pump to prevent clogging, then the clogging problem is solved, but the structure of the pump becomes complicated and the filter needs to be regularly changed
Solution Approach 1:
The filtration system is divided into two separate drum filters (first and second drum filters) that operate independently in parallel. Each drum filter handles a portion of the coolant flow, allowing them to be smaller and simpler individually while collectively providing comprehensive filtration. This segmentation eliminates the need for complex internal filtering within the pump itself.
2Device complexity
If conventional filtration devices store unclean coolant in a filter tank, then the filtration process is simple, but sludge accumulates in the tank requiring frequent cleaning
Solution Approach 1:
The drum filters are equipped with automatic sludge discharge mechanisms that continuously remove accumulated sludge without requiring manual intervention. The filters self-clean by discharging sludge through discharge ports, eliminating the need for frequent manual tank cleaning while maintaining simple filtration operation.
3Device complexity
If a single filtration stage is used, then the device is simple, but the filtration accuracy is insufficient for both low-pressure and high-pressure systems
Solution Approach 1:
The filtration process is segmented into two distinct stages with two drum filters having different mesh densities. The first drum filter provides coarse filtration for general coolant supply, while the second drum filter provides fine filtration for high-pressure applications. This segmentation achieves high filtration accuracy for different systems without requiring an overly complex single-stage design.
Solution Approach 2:
Different parts of the filtration system are designed with different filtration characteristics tailored to their specific functions. The first drum filter has a coarser mesh suitable for low-pressure coolant supply, while the second drum filter has a finer mesh for high-pressure applications. This local differentiation of filtration quality optimizes performance for each specific use case.
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 filtration device achieves high filtration accuracy without the need for frequent tank cleaning, simplifying maintenance and reducing costs by supplying clean liquids to low-pressure systems and super clean liquids to high-pressure systems, ensuring efficient coolant reuse in machine tools.
Implementation Method 1
a primary drum filter, which rotates about a first axis, comprises a primary flow hole for filtering the liquid in the primary conveyer tank
Implementation Method 2
The primary conveyer tank comprises a first conveyer, the first conveyer is provided in a range from a bottom portion of the primary conveyer tank to a first sludge discharge portion via a first sludge scraping portion
Data Source
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AI summary
A filtration device (10) has a primary conveyer tank (11) which is equipped with a first conveyer (20), a primary drum filter (30) which rotates inside the primary conveyer tank (11), a secondary conveyer tank (40) which is equipped with a second conveyer (50) and a secondary drum filter (60) which rotates inside the secondary conveyer tank (40). Liquid (Q1) in the primary conveyer tank (11) passes through a first opening (41) to flow into the secondary conveyer tank (40). Clean liquid (Q2) flowing into a first clean tank (80) is supplied to a low-pressure-side supply system (2) by a first pump (85). Super-clean liquid (Q3) having been filtered by the secondary drum filter (60) passes through a second opening (91) to flow into a second clean tank (90), and then is supplied to a high-pressure-side supply system (3) by a second pump (95).