Plate Heat Exchanger Gaskets Types
The fixing of the seal is divided into adhesive fixing and non-bonding fixing. The shape of the gasket should be consistent with the shape of the plate heat exchanger seal. It must be pointed out that the bonding method does not have any effect on the sealing function.
(1) Non-adhesive sealing alignment: placing the sealing ring correctly into the sealing groove;in the sealing groove, there is a trough structure with a gradually decreasing cross section, so as to make the sealing ring correct positioning.
(2) Adhesive seal. Depending on the purpose of the gasket and the quality of the seal, blending sealants and non-harmonic sealants from different manufacturers can be used. Before bonding, a vapor stream should be used to thoroughly remove the adhesive remaining on the bonding surface and the residual gasket. For blended sealant bonding, the residual adhesive and residual gasket on the bonding surface of the plate heat exchanger must be burned off. When bonding in large quantities, the liquid nitrogen tank of the frozen seal should be prepared, and the heating furnace for drying the plate heat exchanger with gasket should be prepared. The heating temperature should be 160 ° C. If conditions permit, the plate heat exchanger is chemically cleaned to ensure complete removal of the gasket of the bond remaining in the bonded surface of the phe.