Tangential Dilution Water Feed Centrifugal Pulp Disperger
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Solution Overview
Problem
Existing dilution systems for dispergers in fiber web production are complex and require additional equipment for removing diluted pulp, increasing costs and space requirements.
Innovation Solution
A disperger with a dilution system featuring tangentially arranged inlet pipe connections for dilution water, which creates a centrifugal flow to facilitate pulp removal using centrifugal force, eliminating the need for separate pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If dilution water is fed into the disperger from the outer edge perpendicularly towards the rotational axis, then dilution of pulp is achieved, but additional equipment (separate pump) is required to transfer the diluted pulp to the next stage
Solution Approach 1:
The patent combines the dilution function and pulp transfer function into a single integrated system. The tangential inlet pipe connection serves dual purposes: it introduces dilution water for consistency reduction and simultaneously generates centrifugal force to propel the diluted pulp toward the outlet, eliminating the need for a separate transfer pump.
Solution Approach 2:
The patent utilizes hydraulic principles by employing fluid flow (dilution water) to generate centrifugal force through tangential injection. This hydraulic approach replaces mechanical pumping with fluid dynamics, using the kinetic energy of the incoming water to drive the diluted pulp forward.
2Productivity
If a separate pump is provided to transfer diluted pulp from the disperger, then pulp removal is effective, but investment costs and space requirements increase
Solution Approach 1:
The patent merges the dilution chamber with the pulp transfer mechanism, creating a multi-functional unit. The same housing that contains the dilution process also serves as the centrifugal separator and transfer conduit, reducing the number of discrete components and associated costs.
Solution Approach 2:
The system is designed to be self-propelling, where the dilution water itself provides the force needed to move the diluted pulp out of the disperger. The system uses its own operating fluid (dilution water) to perform the transfer function that would otherwise require external equipment.
3Reliability
If a separate pump is used for diluted pulp removal, then pulp transfer is reliable, but energy consumption increases
Solution Approach 1:
The patent replaces energy-intensive mechanical pumping with energy-efficient hydraulic flow. The kinetic energy already present in the dilution water stream is harnessed to drive the diluted pulp forward, avoiding the additional energy input required by electric motors driving pumps.
Solution Approach 2:
The system uses its own operational fluid flow to perform the transfer function, eliminating the need for external energy sources. The dilution water, already being introduced for consistency control, simultaneously provides the propulsive force for pulp removal.
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
Simplifies the dilution process by reducing the need for additional equipment, saving costs, space, and energy consumption while effectively removing diluted pulp.
Implementation Method 1
the tangential dilution water feed/-s from the tangentially located inlet pipe connection/-s is configured to provide an centrifugal force to the flow of the dispersed pulp and the dilution water in the dilution space and to provide along an inner surface of the housing of the dilution space a rotational-type flow of the dispersed pulp and the dilution water towards the outlet pipe connection
Data Source
Figure 1
Figure 2~3B
AI summary
The invention relates to a disperger with a dilution system, which disperger (10) comprises an inlet pipe connection (11) for feeding pulp into the disperger (10), a dispersing system (20) for dispersing pulp in the disperger (10) and a dilution system (30) for diluting the dispersed pulp, which disperger (10) comprises a housing (25), inside of which a dilution space (35) of the dilution system (30) is located, which dilution system (30) comprises an outlet pipe connection (31) for removing diluted pulp from the dilution system (30) and at least one inlet pipe connection (32; 33) for dilution water. At least one inlet pipe connection (32; 33) for dilution water is arranged tangentially at an outer edge of the housing (25) and the tangential dilution water feed/-s from the tangentially located inlet pipe connection/-s (32, 33) is configured to provide an centrifugal force to the flow of the dispersed pulp and the dilution water in the dilution space (35) and to provide along an inner surface of the housing (25) if the dilution space (35) a rotational-type flow (F) of the dispersed pulp and the dilution water towards the outlet pipe connection (31).