It is easy to leakage, fracture, aging, deformation, when plate heat exchanger after a long time of use or no regular maintenance.once the user finds these kinds of situations, we must replace the gasket in a timely manner, so as not to cause more serious consequences. At the same time, the user in the daily use of plate heat exchanger, but also to regularly clean the internal rubber pad, which can extend its service life, reduce the emergence of failure. Next, I will give the guys say plate heat exchanger pad replacement and cleaning steps:
As the plate heat exchanger application fields are expanding, for different media and processes have different temperature, pressure and corrosion resistance requirements. Want to use a "universal" gasket to adapt to all situations, obviously impossible, and should be used for different situations with different materials gasket. Commonly used gasket cross-section shape for the hexagon. Commonly used types of gaskets are natural rubber, neoprene rubber, butyl rubber, EPDM rubber, silicone rubber, fluorine rubber, asbestos fibre sheet and so on. Plate heat exchanger gaskets should be replaced in a timely manner if leakage, breakage, aging, etc. occurs during use. Replacement should be carried out in the following order.
Remove the waste gasket. Be careful not to scratch the gasket groove when removing. Using acetone, butanone or other ketone solvent, remove any residual adhesive from the gasket groove. Wipe the shim groove and shim with a clean cloth or cotton gauze. Apply adhesive evenly to the gasket groove. Apply the clean new shim to the board. The plate with gasket affixed should be placed in a flat, cool and ventilated place to dry naturally for 4h before installation and use.
Old rubber mat removal and cleaning process
The plates are generally cleaned by hand and chemical methods, and must not be shovelled with sharp tools to prevent scratching the plates. Correct installation and maintenance is an important part of ensuring the safety and efficiency of the heating system. For example, herringbone corrugated plate should be selected bonded or buckle type gasket and different, the selection of buckle type gasket can be useful to prevent the glue may contain chloride ions on the corrosion of the plate, and equipment disassembly and installation is more convenient. However, because the plate heat exchanger flow cross-sectional area is small, such as timely maintenance, there may be formed due to scaling blockage, affecting the use of equipment and normal use. In addition, you can also choose to use the gas torch heating, but should strictly control the flame to the bottom of the plate interval of 10-15cm, the aluminium alloy plate should pay more attention to!
