Method for controlling or regulating the pressing pressure for the separation of solids and liquids
AssigneeBucher-Guyer AG Maschinenfabrik
InventorEduard Hartmann
Life of this patent
Estimating the term…
Abstract
A cyclically operating filter press for squeezing juice from fruit is controlled so that the pressing pressure rises during an early part of a cycle and then, at a time determined in view of actual process variables, the pressure increase is stopped and the pressing pressure remains constant thereafter. The limiting time for the pressure rise is determined with a process.
Claims8
A method for controlling or regulating the pressing pressure for the separation of solids and liquids from pressing material (7) by means of a press (1, 2, 6), which performs at least one pressing cycle during a pressing operation by means of a pressure increase, characterized in that the discharge (Q) of the liquid phase from the press (1) is directly or indirectly measured, and that from the course over time of the discharge behavior (Q) of this phase, an instant (t3, t5, t6, t7, t8) is determined at which the further pressure increase (P) is limited to a constant value (P3, P3.1, P4), wherein for each pressing cycle, this instant lies within a time interval which starts at the beginning of discharge (Q) and which ends after a certain length of time, which is equal to twice the length of time between the beginning of discharge (t3) and the onset (t6) of maximal average flow capacity ((Q/t)max) of the liquid phase.
Dependencies are inferred from the claim text.