Closure Assembly for Agitator Mill Bore
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Solution Overview
Problem
Existing solutions for closing openings in fastening elements in agitator mills are inadequate in preventing wear and unauthorized loosening, often leading to corrosion, debris accumulation, and difficulty in maintenance due to the accumulation of ground material and grinding bodies.
Innovation Solution
A closure arrangement with a radially widened end section and recesses that securely engage a closure element or unit, preventing axial movement and ensuring the closure element cannot be removed without destruction, while being designed for easy assembly and using wear-resistant materials to protect against wear and unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the opening for the fastening element is closed to prevent wear and corrosion, then the reliability and service life of the fastening element is improved, but the closure element may deform or the chrome layer may flake off during installation
Solution Approach 1:
The closure element is pre-chilled to reduce its temperature before installation. This preliminary action prevents thermal expansion during pressing, avoiding deformation of the closure element and flaking of the chrome layer while still achieving secure closure and protection against wear and corrosion
Solution Approach 2:
The temperature parameter of the closure element is changed by chilling it before installation. This parameter change reduces thermal expansion and prevents damage during the pressing operation, resolving the contradiction between secure closure and installation damage
2Reliability
If the closure element is pressed into the bore to secure it, then the closure is fixed reliably, but unwanted deformation occurs and durability is reduced
Solution Approach 1:
Chilling the closure element before installation is a preliminary action that prevents thermal expansion during pressing. This ensures reliable fixation through secure pressing while avoiding deformation that would reduce service life
Solution Approach 2:
The chilling process provides beforehand cushioning by reducing the closure element's temperature and thermal expansion tendency before the pressing operation. This cushioning prevents deformation and chrome layer flaking, preserving the service life of the closure element
Data Source
Figure 1~2
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Figure 5~6
AI summary
The invention relates to an assembly for closing an opening (15), in particular for closing a bore (15) for a fastening element (125) in a grinding chamber (160) of an agitator mill (55), wherein the opening (15) for receiving a closure element (5) or a closure unit (30) has a radially expanded end segment (100) by means of which the opening (15) can be effectively and securely closed. To this end, according to the invention, at least one recess (45, 50) is radially introduced or formed in the area of the end segment (100), and the closure element (5) or the closure unit (30) is in engagement with the recess (45, 50) by way of connecting means (40), wherein at least one recess (45, 50) for the closure element (5) or the closure unit (30) brings about a stop in an axial direction.