Paint Nozzle Rinsing Outlets for Bell Cup Cleaning
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Solution Overview
Problem
Conventional paint nozzles in rotary atomizers face challenges in achieving thorough cleaning of the bell cup, distributor disk, paint nozzle, and annular gap between the nozzle and disk receptacle, with existing designs either failing to clean the outer lateral surface effectively or not allowing for efficient short rinsing due to insufficient flushing agent pressure and turbulence.
Innovation Solution
The paint nozzle incorporates separate flushing agent outlets to clean the distributor disk, annular gap between the nozzle and disk receptacle, and external surfaces, with a common rinsing agent channel branching into three distinct outlets to ensure simultaneous and effective cleaning, optimizing the distribution of flushing agent flow to address these areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single common rinsing agent channel is used, then the structure is simple, but the cleaning effectiveness of the annular gap and distributor disk is insufficient
Solution Approach 1:
The common rinsing agent channel is segmented into multiple separate outlets: a first rinsing agent outlet for the distributor disk, a second rinsing agent outlet for the annular gap, and a third rinsing agent outlet for external flushing. This segmentation allows each outlet to be optimized for its specific cleaning target, resolving the contradiction between structural simplicity and cleaning effectiveness.
Solution Approach 2:
Different rinsing agent outlets are positioned at specific locations to provide localized cleaning action. The first outlet is positioned to clean the distributor disk, the second outlet is positioned to clean the annular gap between the paint nozzle and distributor disk receptacle, and the third outlet is positioned for external flushing of the bell cup.
2Reliability
If flushing agent pressure is increased to clean the distributor disk mount, then cleaning effectiveness improves, but paint drying out prevention is compromised
Solution Approach 1:
The rinsing agent flow is segmented into separate outlets with different pressure characteristics. The second rinsing agent outlet for the annular gap receives a portion of the flow that can generate sufficient turbulence for cleaning without compromising paint drying prevention, while the first outlet maintains appropriate pressure for distributor disk cleaning.
Solution Approach 2:
The system changes the pressure and flow parameters of the rinsing agent by distributing it through multiple outlets with different characteristics. The second outlet is designed to provide sufficient turbulence for cleaning the annular gap and distributor disk mount while maintaining parameters that prevent paint drying out.
3Device complexity
If the second rinsing agent outlet is positioned axially recessed, then the structure is compact, but the cleaning of the central bore is insufficient
Solution Approach 1:
The rinsing agent channel is segmented into multiple outlets positioned at different axial locations. The second rinsing agent outlet is positioned axially recessed to clean the annular gap and central bore area, while the first outlet is positioned forward to clean the distributor disk. This segmentation allows both functions to be performed effectively within a compact structure.
Solution Approach 2:
The system uses axial positioning in the third dimension to differentiate the functions of the rinsing agent outlets. By positioning the second outlet axially recessed and the first outlet axially forward, the design achieves both compactness and effective cleaning of different areas without interference between the two functions.
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
This design enables brief rinsing and achieves satisfactory cleaning of the entire bell cup, including the distributor disk, paint nozzle, and external surfaces, ensuring that the annular gap is properly cleaned, thereby improving the overall cleaning efficiency and effectiveness.
Implementation Method 1
a common rinsing agent channel (11) for the passage of a rinsing agent for rinsing the bell cup (3). This rinsing agent channel opens into a first rinsing agent outlet (16), which is used for rinsing the distributor disk (6) and directs the rinsing agent essentially axially forward onto the distributor disk (6) of the bell cup (3)
Implementation Method 2
whereas a distributor disc receptacle 15 retains dirt, since the flushing agent turbulence and the rebound of the flushing agent from the distributor disc 6 are not sufficient to completely clean the distributor disk mount 15 with detergent
Data Source
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AI summary
The invention relates to an ink jet (5) that may be placed in a bell plate of a rotary atomizer and, when thus placed, forms an annular gap between the ink jet (5) and a distribution disc recess of the bell plate, having a common rinsing agent channel (11.1, 11.2) running in the ink jet (5) for conducting a rinsing agent for rinsing the bell plate (3), a first rinsing agent outlet (16) that is supplied with rinsing agent by the common rinsing agent channel (11.1, 11.2) and directed forward in a substantially axial direction toward a distribution disc of the bell plate, and having a second rinsing agent outlet (18) that is supplied with rinsing agent by the common rinsing agent channel (11.1, 11.2). According to the invention, in the installed state, the second rinsing agent outlet (18) empties into the annular gap between the distribution disc recess and the ink jet (5) in order to clean the annular gap with the rising agent.