Introduction to the selection and use of CKD dryer

1 When using an air dryer, the dew point temperature of the pneumatic system must be determined before determining the type of dryer to be used and the adsorbent used. 2 When determining the capacity of the dryer, pay attention to the flow rate and input pressure required for the entire pneumatic system. The air temperature at the input. 3 If an oil-lubricated air compressor is used as the air pressure generating device, it must be noted that the compressed air is mixed with oil particles, and the oil can adhere to the surface of the adsorbent, so that the ability of the adsorbent to adsorb water vapor is reduced. A degreasing device is provided at the air inlet. 4 When the dryer does not have an automatic drainer, it needs to be manually drained regularly. Otherwise, once a large amount of condensed water is mixed, the efficiency of the dryer will be reduced, which will affect the quality of the compressed air.

When the wet compressed air enters the inside of the hollow diaphragm, only the water vapor permeates the diaphragm and enters the outer outlet of the hollow diaphragm to obtain dry compressed air under the action of the partial pressure difference of the water vapor inside and outside the diaphragm. The dry compressed air from part of the outlet is depressurized through a very small hole, and flows to the outside of the hollow diaphragm, and the water vapor is taken out of the dryer to increase the temperature of the output air, thereby avoiding frost on the outer wall of the outlet tube and reducing the compressed air. Relative humidity. The dry air in the unsaturated state is output from the output port for use in a pneumatic system. As long as the output air temperature is not below the pressure dew point temperature, no water droplets will appear. The compressor compresses the refrigerant to raise the pressure and is cooled by the condenser to change the refrigerant from a gaseous state to a liquid state. The liquid refrigerant is depressurized in the capillary tube and becomes a liquid state which is easily evaporated at a low temperature. In the heat exchanger, it exchanges heat with compressed air and is vaporized.