Liquid Dosing Device with Movable Measuring Cylinder
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Solution Overview
Problem
Existing liquid dispensers face issues with unreliable sealing, overflow prevention, and ease of installation and disassembly, leading to reduced accuracy and convenience in liquid measurement.
Innovation Solution
The liquid dispenser features coaxially aligned cylindrical elements, including a cylindrical body, measuring cylinder, and graduated piston, with axial movement capabilities and a sealing mechanism to prevent overflow, ensuring tightness and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the device is designed with a fixed dosing chamber volume, then the structure is simple, but the functional versatility is limited
Solution Approach 1:
The dosing chamber volume is made variable through a movable piston that can be positioned at different heights, allowing the chamber volume to be dynamically adjusted. This enables the device to measure different liquid volumes while maintaining a relatively simple overall structure, resolving the contradiction between structural simplicity and functional versatility.
2Ease of operation
If the device is integrated directly to the bottle neck, then the installation is simple, but the reusability with different containers is reduced
Solution Approach 1:
The device is designed as a separate unit that can be attached to different bottle necks through a universal mounting mechanism. The cylindrical housing with external threading or clamping elements allows it to be reused across multiple containers, providing both easy installation and broad container compatibility.
3Productivity
If the measuring cylinder moves axially during measurement, then the measurement process is continuous, but the sealing reliability is compromised
Solution Approach 1:
A flexible sealing membrane or gasket is used between the movable piston and the dosing chamber walls. This flexible sealing element maintains tight sealing throughout the piston's axial movement, preventing liquid leakage while enabling continuous measurement operation, thus resolving the contradiction between measurement continuity and sealing reliability.
4Measurement precision
If the device includes multiple coaxial cylindrical elements, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The device employs a nested structure where the graduated piston is positioned inside the measuring cylinder, which in turn is positioned inside the cylindrical housing. This nested arrangement achieves precise measurement through multiple concentric elements while minimizing the overall device footprint and reducing structural complexity compared to a non-nested design.
Data Source
AI summary
A liquid dosing device comprises, arranged in axial alignment with the neck (1) of a container and concentrically relative to one another, the following cylindrical elements: a cylindrical housing (3) with a cap (2), a measuring cylinder (4), and a calibrated plunger (10), wherein the measuring cylinder (4) and the calibrated plunger are axially moveable with the aid of a lever (5) provided on the side surface of the measuring cylinder (4), and the measuring cylinder (4) is provided with openings which alternately align with an inlet opening and an outlet opening in the cylindrical housing (3) when the measuring cylinder (4) is moved. The measuring cylinder (4) has a continuation of its cylindrical wall, forming a drainage element (4.2) above discharge openings (9) in its cylindrical surface, as well as a sealing element in the form of a cylindrical wall (4.3) at the point of contact with the calibrated plunger (10). The cap (2) of the cylindrical housing (3) has a locking element that provides tight contact with the neck (1) of the container.