Elastic Needle Valve Seal for Paint Spraying Misalignment
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Solution Overview
Problem
Existing paint spraying units face challenges in maintaining a reliable seal and adapting to varying orientations, especially when the needle and paint outlet opening are misaligned due to torsion, which affects the consistency and efficiency of the paint jet application.
Innovation Solution
The paint spraying unit incorporates a needle head and paint outlet opening made from elastic materials, allowing for temporary deformation to achieve a secure seal, and a rotatable design that enables easy switching between vertical, horizontal, and diagonal orientations, with a two-component needle structure for optimal adaptation and ease of replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the needle head and paint outlet opening are made from rigid materials, then manufacturing precision is improved, but sealing reliability deteriorates when misalignment or surface structure changes occur
Solution Approach 1:
The patent changes the material parameter of the needle head and/or paint outlet opening from rigid to elastic material. This allows the component to deform elastically under compression, compensating for misalignment and surface structure changes, thereby maintaining reliable sealing without compromising manufacturing precision requirements
Solution Approach 2:
The patent employs composite material construction where the needle assembly includes an elastic material component (needle head and/or paint outlet opening) combined with other structural components. This composite approach enables both precise manufacturing and adaptive sealing through elastic deformation
2Reliability
If the needle head and paint outlet opening are made from elastic materials, then sealing reliability is improved, but manufacturing precision deteriorates due to material deformation
Solution Approach 1:
The patent utilizes the elastic parameter of the material to enable controlled deformation. The elastic material is designed to maintain precise alignment during manufacturing and operation, deforming only when necessary to compensate for misalignment, thus achieving both sealing reliability and manufacturing precision
Solution Approach 2:
The patent introduces dynamic adaptability through elastic materials that can adjust their shape in response to operational conditions. The needle head and/or paint outlet opening can dynamically deform to accommodate misalignment while maintaining precise geometry during normal operation
3Reliability
If the needle and paint outlet opening are perfectly aligned, then sealing effect is improved, but adaptability to torsion and misalignment deteriorates
Solution Approach 1:
The patent changes the physical state parameter of the sealing components from rigid to elastic, enabling them to adapt to torsion and misalignment while maintaining sealing effect. The elastic material can deform to accommodate angular deviations and maintain contact pressure for reliable sealing
Solution Approach 2:
The elastic material acts as an intermediary between the needle and paint outlet opening, absorbing misalignment and torsion through elastic deformation. This intermediary layer maintains the sealing function even when perfect alignment cannot be achieved
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 solution ensures a reliable sealing effect without compromising spraying performance, allows for flexible orientation adjustments, and simplifies maintenance by enabling independent replacement of needle components, maintaining an optimal balance of sealability and wear-resistance.
Implementation Method 1
the needle head and/or the paint outlet opening is or are formed by a material, in particular, plastics material, with elastic properties at least in a surface region with which the needle head and the paint outlet opening come into contact when the paint nozzle is closed
Data Source
AI summary
A paint spraying unit for generating a shaped paint jet, including a paint nozzle positioned in a gap, wherein the paint nozzle includes a needle with a needle head that deviates from a rotationally symmetrical cross sectional design and a paint outlet opening that deviates from a rotationally symmetrical cross sectional design. The needle head is displaceable in relation to the paint outlet opening along a longitudinal axis of the needle for controlling a needle valve formed by the paint outlet opening and the needle head. The needle head, with the paint nozzle in a closed position with reference to the longitudinal axis, closes the paint outlet opening in a positive locking manner. In this connection, the needle head and/or the paint outlet opening is/are formed by a material with elastic properties at least in a surface region with which the two components come in contact.