Dosing Chamber Wall Cleaning via Angled Compressed Air Jets
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Solution Overview
Problem
Existing devices for dosing and filling powdery materials into containers face issues with material adherence to the dosing chamber walls, leading to incorrect dosing and contamination, requiring high pneumatic energy and additional sealing measures.
Innovation Solution
Targeted guidance of compressed air to the peripheral wall of the dosing chamber, with outlets angled to generate a circumferential flow, preventing material adherence and reducing pressure requirements, and using multiple outlets on a common pitch circle diameter for comprehensive cleaning without dead spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compressed air is used to clean the dosing chamber wall, then material adherence is reduced, but high pneumatic energy is required and contamination of other areas may occur
Solution Approach 1:
The compressed air outlets are positioned to deliver air locally and selectively to the dosing chamber wall area where material adherence occurs. This localized application of compressed air cleans only the necessary wall region without requiring high overall pneumatic energy, and prevents contamination of other device areas by directing the air flow precisely where needed.
2Reliability
If compressed air outlets are positioned to clean the dosing chamber wall, then material adherence is prevented, but turbulence within the metering chamber may occur
Solution Approach 1:
The compressed air outlets are positioned and angled to direct air flow specifically at the dosing chamber wall at an oblique angle, creating a circumferential flow that sweeps along the wall surface. This localized wall-targeted flow prevents material adherence while the flow is directed away from the metering chamber interior, avoiding turbulence that would contaminate the fill material.
3Object-affected harmful factors
If additional sealing measures are implemented to prevent contamination, then device cleanliness is improved, but device complexity increases
Solution Approach 1:
The invention extracts and removes adhering material from the dosing chamber wall using targeted compressed air flow before the dosing chamber completes its rotation. By proactively removing material from the wall surface through the circumferential flow pattern, the need for additional sealing measures is eliminated, as the material is prevented from adhering in the first place rather than requiring seals to contain it.
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
Achieves accurate dosing by ensuring the entire dosing chamber is cleaned effectively with minimal energy, preventing contamination and the need for expensive sealing measures, thus eliminating underdosing and maintaining device cleanliness.
Implementation Method 1
the at least one compressed air outlet (21) is directed at an oblique angle to a longitudinal axis (36) of the metering chamber (42), thereby generating a flow component in the circumferential direction
Implementation Method 2
The dispensing of the material from the material container into the respective metering chamber is assisted by a vacuum applied via a bore in the metering chamber
Implementation Method 3
The compressed air introduced into the dosing chamber through this bore flows through a filter element forming the bottom of the chamber
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a device (10) for dosing and filling powdery filling material (1) into containers (2), having a dosing chamber (42) for receiving a target quantity of filling material (1), and having a compressed air source (25) generating at least one compressed air blast during or after emptying of the filling material (1) out of the dosing chamber (42), wherein the compressed air blast can be introduced into the region of the dosing chamber (42) via at least one compressed air bore (22), and wherein the pressure outlet (21) on the one outlet side for the filling material (1) opens from the side facing away from the dosing chamber (42), above the dosing chamber (42).