Paint Supply System with Return Line Circulation
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Solution Overview
Problem
Existing painting systems for motor vehicle bodies and add-on parts face issues with 1-pipe systems where paint cannot be circulated, and 2-pipe systems are difficult to expand and require large paint volumes.
Innovation Solution
A supply system with a feed line and a return line that allows paint circulation and can function as both a supply and return, featuring a connecting line that connects downstream and upstream sections, and a shut-off device to control flow, enabling efficient paint distribution and circulation through multiple consumers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-pipe ring main system is used, then the system structure is simple, but paint circulation through the intake devices is not possible
Solution Approach 1:
The system is divided into a supply line and a return line, creating two separate functional paths. The supply line delivers paint to consumers while the return line enables circulation back to the supply source, allowing paint circulation without compromising structural simplicity
Solution Approach 2:
The return line is designed to serve dual functions: it returns paint to the supply system for circulation and can also function as a supply line to deliver paint to consumers. This multi-functionality resolves the contradiction by enabling paint circulation while maintaining operational flexibility
2Ease of operation
If a two-pipe ring main system is used, then paint circulation is enabled, but the system requires high paint circulation rate and is difficult to expand
Solution Approach 1:
The return line can function both as a return path for paint circulation and as a supply line to deliver paint to consumers. This dual functionality reduces the need for additional supply lines when expanding the system, making the system more adaptable and easier to expand
Solution Approach 2:
The system allows dynamic configuration where the return line can switch between returning paint to the supply source or delivering paint to consumers based on operational needs. This dynamic flexibility enables easier system expansion without requiring fixed high circulation rates
3Ease of operation
If a two-pipe ring main system is used, then paint circulation is enabled, but the system requires large paint volumes
Solution Approach 1:
By separating the supply and return functions into distinct lines, the system optimizes paint flow paths. This segmentation allows for more efficient paint utilization where paint that has been used by consumers can be returned and reused, reducing the total paint volume required in the system
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 system allows for efficient paint circulation and distribution, reducing paint requirements, facilitating expansion, and enabling application agent use from both the supply and return lines, eliminating the need for dynamic pressure regulators, and is suitable for both water-based and solvent-based paints.
Implementation Method 1
The supply line has a pump at the inlet side for conveying the application medium
Implementation Method 2
The return line has a pressure and/or volume control device (e.g., a pressure and/or volume regulator) for the application medium
Data Source
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AI summary
The invention relates to a supply system (100) for supplying multiple consumers (10, 20, 30, 40) with an application substance, preferably paint, to be applied to motor vehicle bodies and/or add-on parts thereof. The supply system (100) comprises a feed line (L1), a return line (L3), a first consumer device (A) which comprises a first consumer (10), wherein the first consumer (10) is connected to the feed line (L1) and to the return line (L3) and preferably forms a first consumer (10) of the feed line (L1) in the flow direction of the application substance, and a further consumer device (D) which comprises a further consumer (40), wherein the further consumer (40) is connected to the feed line (L1) and to the return line (L3) and preferably forms a last consumer (40) of the feed line (L1) in the flow direction of the application substance and/or is arranged downstream of the first consumer (10) in the flow direction of the application substance. The supply system (100) is in particular characterized in that the feed line (L1) is connected to the return line (L3) via a connecting line (L2). The invention further relates to an associated coating facility and to an associated supply method.