In the plate heat exchanger used for juice when heated, the heat exchanger to be as close as possible to the evaporation tank, shorten the clear juice and the juice vapor pipe, to reduce the temperature drop. Will be the best heat exchanger before juice inlet valve as the evaporation tank juice inlet valve to control (i.e., no heat exchanger and the evaporation tank between the valve control ), to avoid Avoid the evaporation tank off a small valve into the juice inside the heat exchanger to generate additional pressure and water hammer phenomenon. In the juice volume reduced to close it Steam ( or water ) valve, avoid high temperature and pressure in the. Plate heat exchanger pipes connected to appropriate treatment. To prevent the pipeline of the weight and the expansion and contraction of the pull or push role in its connection method LAN, the heat exchanger is connected piping shall be mounted90 degrees bend. The steam inlet valve should be preceded by a drain valve, before starting the water and sewage discharge tube To prevent the occurrence of water hammer, when starting up and into the dirt. Material pipe should bypass and valve, the lowest bottom tube. And should try to pressure Joint, open front respectively on both sides of the channel test water pressure check. Each connecting pipe should be installed thermometer and pressure gauge. Steam heating, condensing water temperature should be only slightly lower than the steam temperature (in saturation calculation ) If the drop, too large transformer with hydrocephalus, which will significantly reduce its heat transfer performance. Heat exchanger should be equipped with good water vapor condensate removal. Preparation of. Plate heat exchanger with multiple plates through the sides of the cover and a plurality of bolts into a whole. One side of the end cover is fixed on the machine Frame and is used for connecting pipelines, the other side end cover during assembling can move along a guide rail. In all the materials for one-way flow, hot and cold fluid Import and export a total of four tubes are connected to the fixed end cover, this way is the most convenient installation and management. At all four corners on plate The large round hole through, from a to Z. Each sheet of the same side are firmly adhered with a resilient gasket. The bolt tightening after being pressed, the gasket thickness equal to plate Corrugated protruding height, at the plate and gasket of the projecting ends are positioned on the same plane, tightly cling to each other. Gasket thickness must be accurate. Such as The gasket is too thick, the waves of the plate can not contact each other, compression deformation; such as the gasket is not thick enough, then tighten the bolts would make plate corrugation Top snugly into the disk and the formation of small pits, later easy perforation leakage. Sweden AM-20 type plate, with the gasket in the pressed thickness Degree of 5.4mm. Before the installation, should first gasket and the plate is bonded and fixed into a whole. Plate in the device is pressed on the shim locations corresponding to the pit, discharge The gasket gasket material, according to the provisions for the use of the adhesive and process for bonding ( some gasket and adhesive through heating hardening ). This approach in the existing equipment to replace the gasket relatively trouble, not handled properly will leak. Foreign manufacturers in recent years manufacturing company Device, can be bonded with" Velcro" ( Clip on ) fixation method, plate gasket location device with special structure , mounted on the small ring can be fixed on the groove gasket. This method is simple, the replacement of the old gasket is easily removed. The gasket Easy ageing occasions more suitable.