Liquid Injection Device for Pipe Cleaning Mist Generation
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Solution Overview
Problem
Current pipe cleaning methods using high volumes of liquids, especially organic solvents or strong acids, are wasteful and pose environmental concerns, as they fail to efficiently remove residual content from pipe walls without excessive liquid usage.
Innovation Solution
A liquid injection device that introduces cleaning liquids into an airflow as a controlled mist using a separable jacket and nozzle system, allowing for precise liquid delivery and distribution within the airflow duct, enabling efficient lean phase cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large quantities of washing liquid are used to clean pipe walls, then cleaning effectiveness is improved, but liquid waste and environmental impact increase
Solution Approach 1:
The patent changes the physical state and distribution parameters of the washing liquid by atomizing it into fine droplets and presenting them as a mist. This transforms the liquid from a bulk flow into a dispersed phase that can be effectively carried by airflow, achieving thorough coverage with minimal liquid quantity
Solution Approach 2:
The invention uses pneumatic principles by introducing the atomized liquid into a high-velocity airflow stream. The airflow carries the liquid droplets through the pipe, enabling the cleaning action to reach all areas without requiring large volumes of liquid to be pumped and circulated
2Ease of operation
If washing liquid is introduced in bulk flow, then liquid delivery is simple, but cleaning efficiency and liquid utilization are poor
Solution Approach 1:
The liquid is atomized into fine droplets which fundamentally changes its flow characteristics. This atomization allows the liquid to be carried efficiently by airflow rather than requiring complex pumping and distribution systems, maintaining operational simplicity while dramatically improving cleaning efficiency
Solution Approach 2:
The invention transitions from one-dimensional bulk liquid flow to a three-dimensional mist distribution. By presenting the liquid as airborne droplets that can penetrate and coat surfaces from multiple angles, the cleaning efficiency is enhanced while the delivery system remains relatively simple
3Reliability
If organic solvents or strong acids are used for cleaning, then difficult-to-remove residues are eliminated, but environmental regulations may prohibit their use
Solution Approach 1:
The atomization process changes the surface area to volume ratio of the liquid dramatically. This allows milder cleaning agents to be more effective due to better surface contact, reducing or eliminating the need for harsh chemicals like strong acids or organic solvents while maintaining the ability to remove difficult residues
Solution Approach 2:
The high-velocity airflow acts as an intermediary that delivers the cleaning liquid precisely where needed and removes the dissolved residues efficiently. This intermediary mechanism allows the use of environmentally friendly liquids by enhancing their delivery and action efficiency
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 solution reduces liquid waste and environmental impact by ensuring precise and controlled injection of cleaning agents, effectively removing residual content from pipe walls with minimal liquid usage, adhering to environmental regulations.
Implementation Method 1
The use of large quantities of liquids can be avoided by presenting them as a mist of droplets
Data Source
AI summary
A liquid injection device (11) for injecting cleaning liquids into an airflow, comprises: an airflow duct (12); a jacket (13) surrounding the airflow duct, in two parts (13a, 13b), axially separable, and having liquid infeed and drain openings (15); at least one nozzle unit (16) having an inlet opening (16a) onto the jacket, and its nozzle outlet opening (16b) into the airflow duct; the parts of the jacket being sealingly juxtaposed for use, and separable for access to said nozzle unit.