In addition to the overhaul of the plate heat exchanger under special circumstances, regular maintenance should also be carried out.Because the plate heat exchanger seal is easy to assemble and disassemble, the maintenance is simple, and no special tools and equipment are needed.According to different situations, different methods can be used. If the equipment does not leak, but the heat transfer system K has decreased, you can use a closed circuit system to cycle the descaling liquid into the equipment for several hours without disassembling the heat exchanger. .There is no such condition at the site. When disassembling the equipment or finding that the scale is not too serious, you can directly wash the water without removing the plate heat exchanger seals and plates, and brush with a soft brush. How to clean and protect the plate gasket of plate heat exchanger
(1) Chemical cleaning method
Chemical cleaning is to circulate a chemical solution through the heat exchanger to dissolve and discharge the dirt on the surface of the plate. This method does not require disassembling the heat exchanger, which simplifies the cleaning process and reduces the labor of cleaning.
(2) Mechanical (physical) cleaning method
Mechanical (physical) cleaning is to manually clean the plate with a brush to achieve the purpose of removing dirt on the surface of the plate. Although this method is relatively straightforward, it is not easy to clean the hard and thick scale layer.
(3) Comprehensive cleaning method
In the case where the dirt layer is relatively hard and thick, it is difficult to clean it with only one method. The comprehensive method is to first soften the scale layer by chemical cleaning method, and then remove the scale layer by mechanical cleaning method to keep the plate clean.