Continuous Weighing Filling System for Liquid Containers
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Solution Overview
Problem
Existing filling systems face challenges in achieving high-output, precise quantity-controlled or volume-controlled filling of containers with liquid materials, particularly due to inadequate measuring precision and time constraints in high-speed operations, and are not suitable for filling materials with solid content.
Innovation Solution
A system that involves a two-step filling process using a first container treatment unit for initial filling and a weighing unit for weight measurement, followed by a second treatment unit for final filling, allowing continuous container movement and precise adjustment of filling material quantities based on weight measurements to achieve the target filling weight or volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional flow meters are used for filling materials with solid content, then filling can be performed, but measuring precision becomes inadequate
Solution Approach 1:
The patent replaces conventional flow meters (magnetic inductive flow meters) with a weighing-based filling system. Instead of measuring flow rate through magnetic induction which fails with solid-containing materials, the system uses weighing cells to measure the weight of containers before and after filling, thereby determining the exact quantity of filling material with high precision regardless of solid content.
Solution Approach 2:
The patent changes the measurement parameter from flow rate (which is inadequate for solid-containing materials) to weight measurement. By measuring the weight of containers on a continuously moving conveyor belt and using this weight information to control filling quantities, the system achieves precise measurement and control for materials with varying solid content.
2Measurement precision
If containers are removed from the container flow for weighing and reinserted, then weight measurement can be performed, but productivity decreases and reliability worsens
Solution Approach 1:
The patent implements continuous weighing of containers as they move along the conveyor belt without stopping or removing them from the flow. The weighing cells are positioned along the conveyor path, allowing weight measurement to occur continuously during transport, thereby maintaining high productivity while achieving accurate weight measurement for quantity-controlled filling.
Solution Approach 2:
The patent introduces weighing cells as intermediary measurement devices positioned along the conveyor belt path. These weighing cells enable weight measurement of moving containers without requiring the containers to be removed from the continuous flow, thus maintaining productivity while achieving the necessary measurement capability.
3Productivity
If high-speed filling is performed to increase productivity, then output increases, but time for weight measurement becomes insufficient
Solution Approach 1:
The patent performs weight measurement continuously during the conveyor operation without interrupting the filling process. Containers are weighed while moving along the conveyor belt, allowing measurement to occur in parallel with transport, thus eliminating time loss and maintaining high productivity.
Solution Approach 2:
The patent performs weight measurement of containers before they reach the filling position. This preliminary weighing allows the control system to determine the required filling quantity in advance, enabling continuous high-speed filling operations without time loss for measurement during the filling process.
4Manufacturing precision
If quantity-controlled filling is implemented to improve precision, then filling accuracy increases, but device complexity increases
Solution Approach 1:
The patent replaces complex flow rate control mechanisms with a simpler weighing-based control system. By measuring container weight and controlling filling based on weight feedback, the system achieves precise quantity control without the complexity of flow meters and flow rate regulation mechanisms that are inadequate for solid-containing materials.
Solution Approach 2:
The patent implements a feedback control system where the weight of containers is measured and this weight information is used to control the filling quantity. The weighing cells provide real-time feedback on container weight, allowing the control system to adjust filling operations to achieve precise target quantities, thereby improving manufacturing precision through feedback control.
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
Enables high-precision, quantity-controlled or volume-controlled filling of containers, even with filling materials containing solid components, by allowing continuous container movement and precise adjustment of filling material quantities, thereby overcoming the limitations of conventional systems.
Implementation Method 1
a weighing cell (15) connected to the container carrier (16) and forming, together with the container carrier (16), a weighing position (14)
Data Source
AI summary
An apparatus for filling containers with a liquid filling material includes a container treatment unit, a weighing unit, container carriers, weighing cells, a conveying element, filling positions, container receptacles, and a container-conveying section. As the conveying element, on which the filling positions are formed, rotates, it introduces filling material into the containers. The conveying element includes the container-conveying section, which moves the containers in a container-conveying direction. The weighing unit, which is made in the conveying element, weighs containers on the container-conveying section. Each container receptacle forms a weighing position with an associated container carrier and weighing cell.