Plate heat exchanger (Plate Type Heat Exchanger), the equipment by the plate heat exchanger, balance tank, centrifugal sanitary pump, hot water installations (including steam pipes, hot water is injected into the device), the bracket and meter boxes etc. . Sterilized milk or other liquids used in cooling heat sensitivity. To deal with the material first into the balance tank, fed by centrifugal sanitary pump heat exchanger, after preheating, sterilization, insulation, cooling paragraphs, have not met the sterilization temperature materials, commutation by the return valve pneumatic instrument control, and then back to the balance tank reprocessed. Material from the instrument sterilization temperature control box for automatic control and continuous recording, in order to monitor and check the sterilization process. This device is suitable for pre-sterilized milk, pasteurization. Plate heat exchanger plate heat exchanger types are mainly (removable) and two types of brazed frame, mainly in the form chevron plate corrugated board, corrugated board and horizontal flat plate-shaped aneurysm three. 2 The basic structure ⒈ plate heat exchanger plate heat exchanger plate and fixed clamping plate gasket ⒉ ⒊ ⒋ pressing plate clamping ⒎ activities guide column ⒍ under the guide rod bolts ⒌