Flow Meter Positioning in Filling Element for Accurate Liquid Measurement
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Solution Overview
Problem
Existing filling elements with magnetically inductive flow meters suffer from measurement inaccuracies due to the actuating element penetrating the measuring mechanism, requiring increased flow meter diameter and compromising accuracy.
Innovation Solution
The flow meter is positioned downstream of the liquid valve in the filling element, allowing the actuating rod to operate independently of the measuring mechanism, maintaining measurement accuracy and enabling a compact design with reduced sealed transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the actuating element extends through the flow meter to open and close the liquid valve, then the liquid valve can be actuated, but the measurement accuracy of the flow meter deteriorates due to interference from the actuating element
Solution Approach 1:
The invention extracts the actuating element from the measuring mechanism area by positioning the flow meter's measuring channel upstream of the liquid valve. This separation removes the source of measurement interference (the actuating rod) from the measurement zone, allowing accurate flow measurement without compromising valve actuation capability
Solution Approach 2:
The invention changes the spatial arrangement by repositioning the flow meter to a different location in the flow path (upstream of the valve rather than downstream). This dimensional repositioning in the flow direction resolves the conflict between needing an actuating rod for valve control and maintaining measurement accuracy
2Ease of operation
If the diameter of the flow meter is increased to accommodate the actuating element, then the actuating rod can pass through, but the measuring accuracy deteriorates
Solution Approach 1:
The invention extracts the actuating element from the flow meter's measurement zone by positioning the flow meter upstream of the liquid valve. This eliminates the need to increase the flow meter diameter, thereby maintaining optimal measurement accuracy while still allowing valve actuation through the separate liquid valve mechanism
3Measurement precision
If the flow meter is positioned upstream of the liquid valve, then measurement accuracy is maintained, but the actuating element cannot pass through the flow meter
Solution Approach 1:
The invention extracts the actuating element's path from the flow meter by positioning the flow meter upstream of the liquid valve. The actuating rod is routed separately to operate the liquid valve without passing through the flow meter, simplifying the overall design while maintaining measurement accuracy
Solution Approach 2:
The invention segments the flow path and actuation path into separate zones: the flow meter measures flow in the liquid channel upstream, while the actuating rod operates the liquid valve downstream. This segmentation allows both functions to operate independently without interference
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
This configuration ensures accurate flow measurement without affecting the actuating rod's operation, achieving high measurement precision and a compact filling machine design with minimized interference.
Implementation Method 1
the flow meter is a magnetically inductive flow meter (MID)
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a filling element for filling bottles or the like containers with a liquid product, a flowmeter being positioned in the flow path of the product. In order to allow control of the filling process in accordance with a signal produced by the flowmeter, the flowmeter is integrated into the filling element.