Single-Part Paper Machine Nozzle With Hexagon Socket
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Solution Overview
Problem
Existing nozzle devices for paper machines are difficult to handle and secure, particularly when unscrewing after long periods of operation, and pose a risk of parts falling into the machine during installation or replacement, due to their complex three-part structure and limited retainer ring depth.
Innovation Solution
A nozzle device integrated as a single part with a cylindrical body, sealing element, and nozzle insert, featuring a hexagon socket with a long groove for secure Allen key engagement and an outer groove for improved handling, along with a corundum mono-crystal nozzle insert for enhanced durability and laminarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the nozzle device is designed as a single integrated part, then ease of handling and installation is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines the cylindrical body, sealing element, and nozzle insert into a single integrated component. This merging eliminates the need to handle and assemble multiple separate parts, directly improving ease of handling and installation while reducing the risk of parts falling into the machine during maintenance operations.
2Ease of manufacture
If the retainer ring depth is limited, then the fan jet angle is achieved, but secure engagement with Allen key is compromised
Solution Approach 1:
The patent implements a nested structure where the hexagonal socket is positioned within the cylindrical body, allowing the Allen key to engage deeply and securely. This nested arrangement provides sufficient engagement depth for reliable tightening and loosening operations while maintaining the required fan jet angle geometry.
3Adaptability or versatility
If three separate elements are used in the nozzle device, then assembly flexibility is provided, but handling difficulty and risk of parts loss increase
Solution Approach 1:
The patent merges the cylindrical body, sealing element, and nozzle insert into one integrated component. This eliminates the handling difficulties and safety risks associated with managing three separate elements, particularly during overhead installation and maintenance operations in paper machines.
Data Source
AI summary
The invention relates to a nozzle device for use in a paper machine, board machine, pulp dewatering machine etc., comprising a cylindrical body having an outer thread and an inner hexagon socket; a sealing element, and a nozzle insert having a cylindrical passage. The cylindrical body, the sealing element and the nozzle insert are preferably formed as a single part.