Nozzle Capillary Liquid Removal Groove Design
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Solution Overview
Problem
Existing liquid material discharge devices face issues with surplus liquid adhering to nozzle outer surfaces due to 'creeping and climbing' phenomena, leading to variations in discharge rate and shape, and requiring complex mechanisms for removal, which increase device size, cost, and operational complexity.
Innovation Solution
A nozzle design incorporating a liquid removing member with capillary forces that uses groove-like spaces and surrounding surfaces to actively suck and remove surplus liquid material from the nozzle's outer surfaces without additional mechanisms, reducing device size and operational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wiping devices with rotating rollers are used to remove surplus liquid, then liquid removal effectiveness is improved, but device complexity and size increase
Solution Approach 1:
The invention extracts the liquid removal function from a separate external device and integrates it into the nozzle structure itself through groove-like spaces and capillary forces, eliminating the need for complex external wiping mechanisms
Solution Approach 2:
The nozzle structure performs self-cleaning through capillary forces generated by groove-like spaces, removing surplus liquid automatically without requiring external wiping devices or additional operational steps
2Reliability
If external scraping mechanisms are used to remove liquid, then liquid removal effectiveness is improved, but device size increases
Solution Approach 1:
The invention merges the liquid removal function with the nozzle structure by integrating groove-like spaces into the nozzle body, eliminating the need for separate external scraping mechanisms and reducing overall device size
Solution Approach 2:
The liquid removal grooves are nested within the nozzle structure itself, with groove-like spaces formed inside or on the nozzle surface, allowing the removal function to be contained within the existing nozzle volume without adding external components
3Reliability
If complex wiping mechanisms are used, then liquid removal effectiveness is improved, but manufacturing cost increases
Solution Approach 1:
The invention extracts the liquid removal function from complex mechanical wiping systems and implements it through simple groove-like spaces that can be manufactured using conventional machining or molding techniques, significantly reducing manufacturing cost
Solution Approach 2:
The groove-like spaces are formed as integral parts of the nozzle structure that can be manufactured inexpensively through standard manufacturing processes, eliminating the need for expensive mechanical wiping components
4Reliability
If external cleaning devices are used, then liquid removal effectiveness is improved, but operational complexity increases
Solution Approach 1:
The nozzle automatically removes surplus liquid through capillary forces generated by groove-like spaces during normal operation, eliminating the need for separate cleaning operations or complex control systems
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
Effectively prevents surplus liquid from adhering to the nozzle tip, maintaining consistent discharge rates and shapes, and simplifies the removal process, reducing manufacturing and operational costs while maintaining a clean nozzle state.
Implementation Method 1
A nozzle design incorporating a liquid removing member with capillary forces that uses groove-like spaces and surrounding surfaces to actively suck and remove surplus liquid material from the nozzle's outer surfaces
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
Provided are a nozzle capable of removing a surplus liquid material, which is adhered to outer surfaces of the nozzle and which affects a discharge operation, without undergoing a special process, and a liquid material discharge device provided with the nozzle. In a nozzle (1) for discharging a liquid material according to the present invention, the nozzle (1) includes a body (2) having a liquid inflow space, and a discharge tube (4) communicating with the liquid inflow space and extending downwards from the body (2). A liquid removing member (16) is disposed at a lower end of the body (2) in a state laterally surrounding the discharge tube (4), and the liquid removing member (16) includes a groove-like space (15) that is formed between adjacent to of plural surrounding surfaces (10), and that generates capillary force acting in a direction laterally away from the discharge tube (4). Preferably, the liquid removing member includes the plural surrounding surfaces (10) that surround a lateral surface of the discharge tube (4), and that generate capillary force acting in a direction towards a base of the discharge tube (4) in cooperation with the lateral surface of the discharge tube (4).