Spray Gun Sealing Element With Axial and Radial Nozzle Sealing
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Solution Overview
Problem
Existing paint spray gun sealing elements fail to provide a high level of tightness and are difficult to manufacture, leading to potential contamination and impaired spray quality due to material leakage between the base body and paint nozzle.
Innovation Solution
A sealing element with both axially and radially acting surfaces, designed as a single unit, preferably made of flexible material like HDPE, which expands to form a radially acting surface when tightened, enhancing the sealing effect and simplifying production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional paint nozzle seal is used, then the sealing function is provided, but the tightness is insufficient and manufacturing is difficult
Solution Approach 1:
The sealing element is divided into two distinct sealing surfaces: an axially acting sealing surface and a radially acting sealing surface. This segmentation allows each surface to address specific leakage paths independently, improving overall sealing tightness while maintaining manufacturing simplicity through modular design
Solution Approach 2:
The invention transitions from conventional single-direction sealing to dual-direction sealing by adding a radial sealing component to the axial sealing surface. This dimensional expansion creates a more robust sealing mechanism that addresses leakage in multiple directions simultaneously
2Productivity
If material leakage occurs between base body and paint nozzle, then assembly is simple, but spray quality is impaired due to contamination
Solution Approach 1:
The sealing element is pre-installed on the paint nozzle before assembly with the base body. This preliminary positioning ensures that the sealing surfaces are correctly aligned and ready to prevent leakage, maintaining assembly simplicity while ensuring spray quality through proactive sealing
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 dual-sealing surface design significantly improves the sealing efficiency, reducing the risk of material leakage and facilitating easier assembly, while maintaining undisturbed material flow and quality.
Implementation Method 1
the sealing element is designed in such a way that when the attachment is arranged in the base body, it has an axially acting sealing surface and forms a radially acting sealing surface with the base body and/or the attachment
Data Source
Figure 1
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AI summary
The invention relates to a sealing element (440) for sealing a transition between a base body (20) of a spray gun (1), in particular a paint spray gun, and an attachment of a spray gun (1), in particular a paint nozzle (40), wherein the sealing element (440) is configured such that, when the attachment is arranged in the base body (20), it forms an axially acting sealing surface (56) and a radially acting sealing surface (58) with the base body (20) and/or the attachment. The invention further relates to an attachment, in particular a paint nozzle assembly (240), for a spray gun (1), in particular a paint spray gun, and a spray gun (1), in particular a paint spray gun, each of which has such a sealing element (440).The sealing element (440) according to the invention offers a significantly improved sealing effect compared to sealing elements from the prior art, due to the axially acting sealing surface (56) and the radially acting sealing surface (58).