Mixing Device Gas Injection Elongated Gap Metering
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Solution Overview
Problem
Existing mixing devices face challenges in accurately adjusting the mixing ratio of liquids due to the compressibility of gas-liquid mixtures, leading to inaccurate metering and adverse effects on thixotropic materials, especially when gas is introduced before mixing with another liquid.
Innovation Solution
A mixing device with a gas injection system featuring a metering unit with an elongated gap, allowing controlled gas introduction into a mixing chamber, avoiding high shear forces and maintaining liquid incompressibility, which enables precise adjustment of the liquid ratio and handling of thixotropic materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gas is supplied to liquid before mixing with another liquid using conventional stirring elements, then gas mixing is achieved, but metering accuracy deteriorates due to liquid compressibility and thixotropy changes
Solution Approach 1:
The patent applies preliminary action by introducing gas into the liquid at a controlled stage before the liquids are mixed, using a metering unit with an elongated gap. This allows gas to be incorporated into the liquid stream in a controlled manner, ensuring that the liquid maintains its incompressible properties during metering while still achieving gas mixing in the final product.
Solution Approach 2:
The patent changes the physical parameters of gas introduction by using a metering unit with an elongated gap instead of conventional stirring elements. This parameter change allows for precise control of gas flow rate and distribution, introducing gas in a fine, planar manner that avoids disrupting liquid properties while achieving thorough mixing.
2Productivity
If gas-dispersing stirring elements are used to mix gas with liquid, then gas mixing is achieved, but high shear forces are generated affecting thixotropic materials
Solution Approach 1:
The patent extracts the gas-dispersing function from conventional stirring elements and implements it through a dedicated metering unit with an elongated gap. This separation allows gas to be introduced in a controlled, gentle manner that achieves mixing without generating the high shear forces associated with traditional stirring mechanisms, thereby protecting thixotropic material properties.
3Quantity of substance
If conventional metering nozzles are used for gas introduction, then gas flow is controlled, but gas distribution into liquid is insufficient
Solution Approach 1:
The patent transitions from conventional point or orifice-based metering to an elongated gap configuration, effectively changing the dimensional characteristics of gas introduction. This elongated gap provides a larger surface area for gas-liquid interaction, enabling gas to be introduced in a fine, planar manner that improves distribution quality while maintaining flow control capabilities.
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
The solution allows for accurate adjustment of the mixing ratio and maintains the thixotropy of materials, ensuring homogeneous temperature and efficient mixing without the need for gas-dispersing stirring elements, even when gas is introduced before mixing with another liquid.
Implementation Method 1
The quantity of gas is controlled in the mixing device according to the invention via the differential pressure between a pressure prevailing in the mixing chamber and a pressure prevailing in the gas source.
Implementation Method 2
there is a negative influence on metering accuracy due to the compressibility of the liquid mixed with gas... It is also possible to use highly thixotropic materials.
Data Source
AI summary
A mixing chamber in which a first liquid comes into contact with a second liquid, and a gas injection device designed to inject a gas into the mixing chamber, wherein the gas injection device includes: a gas source to provide the gas at a predetermined pressure, and a metering unit to limit the gas provided by the gas source to a predetermined flow rate, wherein the metering unit is in contact with the mixing chamber on a gas outlet side of the metering unit, wherein the gas outlet side of the metering unit includes an elongated gap, wherein the gas passes out of the metering unit into the mixing chamber via the elongated gap, and wherein the gas passes out of the metering unit into the mixing chamber.