| 摘要 |
An installation 10 for the pasteurization and aseptic packaging of food pieces, comprises a positive displacement pump 12, a pasteurizer 14, a bleed-off device 16, control means 18 for the bleed-off device, and an aseptic packaging machine 20. A liquid medium is added to the food pieces prior to pasteurization, via a pipeline 26, and liquid medium is withdrawn again at the bleed-off device 16 via a pipeline 82 and a lobe pump 84. The control means 18 comprises a flow meter 28 in the flow line 26, a flow meter 90 in the delivery 86 of the lobe pump, a ratio controller 114, and a speed controller 104 controlling the speed of the lobe pump. This maintains a predetermined ratio between the liquid medium withdrawn from the flowstream at the bleed-off device 16, and the liquid medium added via the pipeline 26. |
