Rotary Dryer Screen Latch for Tool-Free Section Replacement

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Solution Overview

Problem

Existing dryer systems face challenges in quickly and efficiently replacing or changing screens due to damage or material handling requirements, as they often require tools for disassembly and are not designed for rapid adjustment of aperture sizes.

Innovation Solution

A quick release latch mechanism is introduced that allows for a mechanical connection between screen portions, enabling easy detachment and replacement without tools, using an axel, pin, and rotatable mechanical couplings for secure locking and adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If traditional screen connection methods are used, then screen replacement requires tools and takes significant time, but the connection structure becomes simpler

Engineering Contradiction:
Improvescreen replacement timeVSAvoidtool-free operation
Core Design Contradiction:
Loss of timeVSEase of operation

Solution Approach 1:

The screen system is divided into multiple screen portions that can be independently removed and replaced. Each screen portion can be detached individually from the dryer, allowing for quick replacement without tools by simply separating the modular components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The latch mechanism incorporates a rotatable handle that transitions between locked and unlocked positions. When the handle is rotated to the unlocked position, the screen portion can be quickly removed without tools, enabling dynamic adjustment of screen configurations.

Inventive Principle:
Principle #15Dynamics

2Reliability

If a secure locking connection is implemented between screen portions, then screen portions are firmly connected during operation, but the mechanism becomes more complex

Engineering Contradiction:
Improvescreen connection reliabilityVSAvoidlatch mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The latch mechanism is designed to be self-latching when the handle is in the locked position, maintaining secure connection between screen portions during operation without requiring additional fastening steps or complex locking procedures.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The latch mechanism combines multiple functions into a single integrated component that provides both secure locking during operation and tool-free release when needed, eliminating the need for separate locking and releasing mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If screens are made removable for handling different materials, then adaptability to different materials is improved, but the risk of bypassing by particulate matter increases

Engineering Contradiction:
Improvematerial handling adaptabilityVSAvoidparticulate matter bypass
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The latch mechanism is pre-configured to provide secure locking when engaged, ensuring that screen portions are firmly connected before operation begins, preventing particulate matter from bypassing the screen during the drying process.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12429077B2Dryer screen quick release latch
Publication Date: 2025.09.30 MAAG GALA INC
  • US12429077B2 patent drawing
  • US12429077B2 patent drawing
  • US12429077B2 patent drawing

AI summary

A rotary dryer can include a screen that is divided into different portions joined together to form the screen structure. The screen portions can be joined together using one or more quick release latches. Each latch can provide a locking connection between the different screen portions. The latch can be unlocked, e.g., using hand pressure, to disconnect one screen portion from an adjacent screen portion. This can allow quick replacement of one or both screen portions with replacement screen portion(s). The latch may include a latch body and a latch rod. The latch rod may be rotatably connected to the latch body. The latch rod can be connected to one screen portion and the latch body connected to another screen portion. The latch body can rotate around the rotatable connection, causing the screen portions to be pulled together for subsequent use of the screen structure.