Cleaning Device for Liquid Discharge Nozzles with Segmented Pressure Control
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Solution Overview
Problem
Existing cleaning devices for discharge devices with complex flow paths are inefficient due to non-uniform fluid flow, leading to wasteful consumption of cleaning fluid and increased cleaning time, and risk of damage from high pressure, especially when dealing with high viscosity liquids.
Innovation Solution
A cleaning device with multiple supply mechanisms that adjust pressure independently for each inlet port, using compressed gas and cleaning fluid supplied through regulators and valves to ensure uniform flow and controlled pressure, along with a liquid contact part fixing jig for efficient cleaning without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cleaning fluid is supplied at high pressure to ensure thorough cleaning of complex flow paths, then cleaning effectiveness is improved, but risk of damage to the flow path increases
Solution Approach 1:
The cleaning fluid supply is divided into multiple independent supply mechanisms, each controlling pressure for specific flow path sections. This allows high pressure to be applied only where necessary while maintaining lower pressure in other areas, preventing damage while ensuring thorough cleaning.
Solution Approach 2:
Different pressure levels are applied to different sections of the flow path based on their specific cleaning requirements. The supply mechanisms enable localized pressure control, matching the cleaning intensity to the local needs of each flow path section.
2Device complexity
If cleaning fluid is supplied through a single inlet port, then device complexity is reduced, but flow uniformity in merging and branching paths deteriorates
Solution Approach 1:
The single inlet port is segmented into multiple inlet ports, each with its own supply mechanism. This segmentation enables independent control of cleaning fluid supply to different flow path sections, ensuring uniform flow distribution through merging and branching paths.
Solution Approach 2:
The system changes the parameter of pressure control by introducing multiple supply mechanisms that can independently adjust pressure levels. This allows optimization of flow uniformity in complex flow paths by controlling pressure distribution across multiple inlet ports.
3Ease of manufacture
If manual cleaning method is used, then equipment cost is reduced, but cleaning time and labor intensity increase
Solution Approach 1:
The cleaning system is designed to perform cleaning operations automatically through the cleaning fluid circulation mechanism. The system serves itself by using compressed gas to drive cleaning fluid through the flow paths without requiring manual intervention for fluid delivery, reducing both time and labor intensity.
4Reliability
If cleaning fluid is circulated through the flow path multiple times, then cleaning completeness is improved, but fluid consumption and cleaning time increase
Solution Approach 1:
The cleaning fluid is circulated continuously through the flow path in a closed loop system. The cleaning fluid collection unit recovers and recirculates the cleaning fluid, maintaining continuous cleaning action without requiring multiple separate cleaning cycles with fresh fluid, thereby reducing fluid consumption while maintaining cleaning completeness.
Solution Approach 2:
The cleaning fluid is recovered by the cleaning fluid collection unit after passing through the flow path and is recirculated back through the system. This recovery and reuse of cleaning fluid reduces consumption while maintaining cleaning effectiveness through multiple passes.
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 solution enables effective cleaning of complex flow paths with reduced fluid consumption and cleaning time, while minimizing the risk of damage, by ensuring uniform fluid flow and controlled pressure application.
Implementation Method 1
a cleaning fluid supply tank (101) that supplies a cleaning fluid by action of compressed gas supplied from a compressed gas source (106)
Implementation Method 2
The liquid material cannot be removed unless ultrasonic vibration is applied for a comparatively long time
Data Source
AI summary
A cleaning device for cleaning a liquid contact part of a discharge device, the liquid contact part including an operating space in which a rod-like member is operated, and a supply flow path, the cleaning device including a compressed gas source, a cleaning fluid supply tank, a plurality of supply mechanisms that supply compressed gas and a cleaning fluid, a cleaning fluid collection tank, a liquid contact part fixing jig to which the plural supply mechanisms and the cleaning fluid collection tank are fluidly connected, and which accommodates the liquid contact part of the discharge device, and a control device, wherein the cleaning fluid is supplied to the liquid contact part fixing jig in accordance with pressure values, which are specified separately for the plural supply mechanisms, by the control device. The liquid contact part can be cleaned with a uniform flow without disassembling the liquid contact part.