Nozzle Mounting Structure for Accurate Liquid Jet Alignment
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Solution Overview
Problem
Conventional nozzles face challenges in accurately jetting liquid in the correct direction with respect to the nozzle mounting hole, and they often have fixed nozzle tips that cannot be replaced.
Innovation Solution
The nozzle design includes a mounting external thread, a cylindrical portion that fits within the nozzle mounting hole, a first introducing passage, a cylindrical choke portion, and a conical portion, allowing for accurate alignment and replacement of the nozzle tip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a tapered thread is used for mounting the nozzle, then the nozzle can be securely fastened to the nozzle holder, but the jet becomes inclined with respect to the mounting hole
Solution Approach 1:
The mounting structure is divided into two independent functional elements: a parallel thread for precise alignment and jet direction, and a tapered thread for secure fastening. This segmentation allows each element to perform its specific function without interference, resolving the contradiction between mounting security and jet alignment accuracy
Solution Approach 2:
The parallel thread acts as an intermediary component between the mounting hole and the nozzle body. It provides a preliminary alignment function that ensures the jet will be perpendicular to the mounting hole, while the tapered thread provides the final secure fastening. This intermediary structure resolves the conflict between alignment precision and mounting strength
2Device complexity
If the nozzle tip is fixed in the conventional nozzle design, then the structure is simple, but the nozzle tip cannot be replaced
Solution Approach 1:
The nozzle is segmented into replaceable components: the nozzle tip, the nozzle body, and the mounting structure. The nozzle tip can be independently removed and replaced by unscrewing it from the nozzle body, while maintaining a relatively simple overall structure. This segmentation enables replaceability without significantly increasing device complexity
Solution Approach 2:
The nozzle tip is designed with a dynamic, adjustable configuration rather than a fixed one. It can be rotated and removed from the nozzle body through threaded engagement, allowing the system to adapt to different operational requirements by replacing tips with different specifications while maintaining structural simplicity
3Manufacturing precision
If a parallel thread is used for mounting, then the jet alignment with the mounting hole is accurate, but the mounting security is reduced
Solution Approach 1:
The mounting function is segmented into two distinct threads: the parallel thread handles alignment precision by ensuring the jet is perpendicular to the mounting hole, while the tapered thread handles mounting security by providing strong fastening. This functional segmentation resolves the contradiction between alignment accuracy and mounting security
Solution Approach 2:
Two different thread structures (parallel and tapered) are merged into a single integrated mounting system. The parallel thread portion provides alignment, while the tapered thread portion provides secure fastening, combining the benefits of both thread types into one cohesive mounting mechanism that achieves both precision and strength
Data Source
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AI summary
Provided is a nozzle for jetting liquid in an accurate direction with respect to a nozzle mounting hole. The nozzle (10) is mounted to a nozzle holder (91) having a nozzle mounting hole (93) having a right cylindrical shape, an outlet port (97) connected to the nozzle mounting hole (93), and a mounting internal thread (96). The nozzle (10) includes: a mounting external thread (15) disposed at a first end, and is a parallel thread that fits with the mounting internal thread (96); a cylindrical portion (13) that fits in the nozzle mounting hole (93); a first introducing passage (72) disposed coaxially with the cylindrical portion (13); a cylindrical choke portion (43) disposed coaxially with the cylindrical portion (13), and a conical portion (41) connecting the first introducing passage (72) to the cylindrical choke portion (43).