Density Flow Control for Citrus Juice Separator Automation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for clarifying citrus juices require manual intervention during startup and after solids emptying, as optical turbidity devices are insufficient for fully automatic operation, leading to inefficiencies and product losses due to incomplete separation.
Innovation Solution
A density flow measuring system is installed in the pulp discharge line to control a controllable element, allowing the pulp phase to be returned to the separator inlet if the solids content is too low, and switching to discharge into a pulp tank once sufficient pulp is collected, thereby automating the startup and operation of the separator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an optical turbidity device is used to control the separator during clarification, then the operation can be automated, but the measurement is not meaningful enough during startup and after solids emptying, requiring manual intervention
Solution Approach 1:
The patent changes the measurement parameter from optical turbidity to density. The density flow measuring device measures the density of the pulp phase, which provides meaningful measurements during startup and after solids emptying. This parameter change enables fully automatic operation without manual intervention, as density measurements remain valid throughout all operating conditions including startup and post-emptying phases.
2Productivity
If the separator operates continuously to reduce manual intervention, then productivity increases, but pulp phase with low solids content is discharged instead of being returned to inlet, causing product loss
Solution Approach 1:
The patent implements a feedback control system using a density flow measuring device to continuously monitor the density of the pulp phase. Based on this feedback, a control valve automatically adjusts the flow, returning pulp phase with low solids content to the separator inlet and discharging only the pulp phase with sufficient solids content to the pulp tank. This feedback mechanism enables continuous operation while preventing product loss during startup and post-emptying phases.
Solution Approach 2:
The separator system becomes self-regulating through the density measurement and control valve. The system automatically determines when to return pulp to the inlet versus discharge to the pulp tank based on real-time density measurements, eliminating the need for manual intervention and ensuring optimal operation throughout the entire process including startup and post-emptying phases.
3Measurement precision
If manual intervention is used to control startup and post-emptying operations, then measurement accuracy is maintained, but operational complexity and labor requirements increase
Solution Approach 1:
The patent replaces manual mechanical control with an automated measurement and control system. The density flow measuring device provides accurate detection of pulp phase density, and the control valve automatically executes the return or discharge action based on the measurement. This substitution eliminates manual intervention while maintaining measurement accuracy, reducing operational complexity and labor requirements.
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 approach eliminates the need for manual interventions and ensures efficient pulp separation by automating the startup and continued operation of the separator, reducing product losses and improving clarification efficiency.
Implementation Method 1
A density flow measuring system (14) is installed in the pulp discharge line (13) from the separator drum (3), which controls a controllable element (15) depending on the density
Implementation Method 2
the separator drum (3) clarifies the juice from the pulp phase containing the pulp, the clarified juice being discharged continuously
Implementation Method 3
In the drum (3) of the separator, a separating disc pack (9) is preferably arranged. The drum (3) also has a further, discontinuously operating emptying system for solids
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a method for reducing the pulp content of fruit juices, particularly citrus juices, containing pulp, wherein the fruit juice is continuously purified of a pulp phase in the centrifugal field of a separator (3), said pulp phase being drawn from the separator drum through a fluid discharge, characterized in that the density of the pulp phase drawn from the separator is measured using a density flow-through measuring device (14) and that according to said density measurement at least one controllable device (15, 17) is controlled. The density of the pulp phase can be influenced by the control of said device.