Detachable Connection Piece With Radial Filter Insert
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Solution Overview
Problem
Existing application systems for flowable media, such as hot melt adhesives, face challenges with filter maintenance, particularly in designs where filters are integrated within heating hoses, leading to laborious and tool-dependent filter changes, and risk of contamination during filter exchange.
Innovation Solution
An application system with a detachable connection piece and filter insert that allows for axial insertion and removal of the filter, featuring a bearing section for radial support and centering, enabling easy and tool-free filter replacement, and a filter structure with radial flow to reduce flow resistance and extend service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter is integrated inside the heating hose with fastening mechanisms, then the filter can be contained within the heating hose structure, but the filter change becomes very laborious and requires tools
Solution Approach 1:
The filter device is segmented into a filter element and a separate filter holder, allowing the filter element to be easily removed and replaced without tools. The filter holder remains in the heating hose while the filter element can be independently changed, resolving the contradiction between secure containment and easy maintenance.
Solution Approach 2:
The filter element is extracted from the integrated heating hose structure and placed in a separate, removable filter holder. This extraction allows the filter to be changed without disassembling the heating hose, making the operation simple and tool-free while maintaining reliable filter containment during operation.
2Ease of operation
If the filter is arranged in the application device, then the filter can be easily accessed, but dirt remains in the receiving space when the filter is exchanged and contamination risk increases
Solution Approach 1:
The filter device is extracted from the application device and relocated to the heating hose. This positioning allows the filter to be changed without disassembling the application device, maintaining ease of operation while eliminating the contamination risk associated with dirt remaining in the application device's receiving space.
Solution Approach 2:
The heating hose acts as an intermediary component that houses the filter device. This intermediary positioning allows the filter to be accessible for maintenance while preventing direct contamination of the application device, as the filter is changed in the heating hose rather than in the application device.
3Device complexity
If the filter structure allows axial flow, then the flow path is simple, but the flow resistance is high and service life is reduced
Solution Approach 1:
The flow path is changed from a simple axial direction to a radial direction, adding a dimensional component that increases the effective filter area. This radial flow arrangement reduces flow resistance and extends service life while maintaining relatively simple device structure through the use of a cylindrical filter holder.
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
Facilitates simple and fast filter changes, prevents contamination, and ensures a homogeneous filter loading, resulting in a compact and efficient design with reduced risk of unfiltered medium reaching the application device.
Implementation Method 1
The filter insert has a filter structure through which flow can pass radially inwards from the radial outside or radially outwards from the radial inside, for filtering the flowable medium
Implementation Method 2
The filter insert has a bearing section, which protrudes radially outwards relative to the filter structure, the bearing section being arranged at least partially in the receiving section, for radially supporting the filter insert in the receiving section
Implementation Method 3
The heating hose is thus used as a heated and flexible transport path for the flowable medium
Implementation Method 4
The connection piece has an inlet end, which is fluid-connected to the inner tube and has an inlet opening for the flowable medium, an outlet end, which has an outlet opening, and a through-duct, which extends from the inlet opening to the outlet opening, for the flowable medium
Data Source
AI summary
An application system for applying a flowable medium, in particular a hot melt adhesive, to a substrate, and a heating hose for supplying a flowable medium to an application device for applying the flowable medium to a substrate. In the application system, the application device and the heating hose are coupled detachably to one another via a connection piece, wherein the connection piece has a receiving section for a filter insert.