Hydraulic Injector for Liquid Polyelectrolyte Dosing
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Solution Overview
Problem
Existing equipment for preparing and dosing polyelectrolytes in water treatment systems faces challenges with inconsistent water/polymer ratios due to pressure and flow variations, contamination, and maintenance issues, particularly when handling solid flocculants, leading to suboptimal purification operations.
Innovation Solution
A compact equipment set utilizing a hydraulic injector for controlled premixing of liquid flocculants with water, featuring a 300 L HDPE tank, electric stirrer, electromechanical piston dosing machine, and electronic control module, which ensures stable concentration and dosage, reducing energy consumption and increasing yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a hydraulic injector is used for controlled premixing of liquid flocculants with water, then the water/polymer ratio stability and mixing homogeneity are improved, but the device complexity increases
Solution Approach 1:
The patent introduces a hydraulic injector as an intermediary device between the water supply and the mixing tank. This injector pre-mixes the liquid flocculant with water in a controlled manner before entering the main mixing tank, ensuring stable water/polymer ratios. The injector acts as a mediator that simplifies the overall mixing control while improving composition stability.
Solution Approach 2:
The patent implements preliminary mixing action through the hydraulic injector before the main mixing process. The flocculant is pre-diluted and pre-mixed with a portion of water in the injector, creating a homogeneous intermediate solution that is then added to the main tank. This preliminary action ensures uniform distribution and stable concentration ratios.
2Measurement precision
If liquid flocculants are used instead of solid flocculants, then the handling and dosing precision are improved, but the storage and transport requirements become more complex
Solution Approach 1:
The patent utilizes hydraulic principles to transport and dose the liquid flocculant. The system employs pressure-driven flow control and hydraulic injectors to precisely meter and deliver the liquid flocculant to the mixing tank. This hydraulic approach enables accurate dosing while simplifying storage and handling compared to solid flocculant systems.
3Volume of moving object
If the equipment is designed as a compact integrated system, then the installation space is reduced, but the manufacturing complexity increases
Solution Approach 1:
The patent combines multiple functions into a single integrated mixing system. The hydraulic injector, mixing tank, stirrer, and dosing mechanisms are merged into one compact unit that performs premixing, main mixing, and dosing operations. This integration reduces the overall installation footprint while the modular design facilitates manufacturing and assembly.
Solution Approach 2:
The mixing equipment is designed with multi-functionality, where the same system handles flocculant storage, dosing, mixing, and delivery. The hydraulic injector serves multiple purposes including metering, pre-mixing, and injection control. This universal design reduces the number of separate components needed, shrinking the installation footprint.
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 provides a stable and homogeneous preparation of high-molecular-weight liquid polyelectrolytes, optimizing the flocculant production process by ensuring precise mixing, reducing time and energy consumption, and preventing common issues like spills and contamination, while allowing for adjustable dosing and automatic operation.
Implementation Method 1
the necessary dosage of water and concentrated flocculant is achieved, by means of a hydraulic injector, which performs a premixing
Implementation Method 2
which is introduced into a tank with stirring, wherein polyelectrolytes which are already diluted and activated are generated
Data Source
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AI summary
Equipment for preparing and dosing liquid polyelectrolytes, which is a compact and transportable set of equipment, and which comprises a mixing tank with an electric stirrer and at least one double-level probe and an outlet hose for the diluted flocculant, further comprising a hydraulic injector with mixing regulation of water and liquid flocculant, from wherein a concentrated premixture of tap water and liquid flocculant comes out which enters the mixing tank; and an electronic board with a control module, which is in connection with the injector, a dosing pump for the inlet of liquid flocculant and a solenoid valve for tap water, and which organises the operation and has manual and automatic control means for the dosing and outlet of the liquid polyelectrolyte.