Water filtering device

A water filtering device comprising:

• a case having a water inlet port and a water discharge port;
• an inner cylinder disposed in the case and providing a space between the case and the inner cylinder filled with an ion exchange resin so that water entering through the water inlet port is ion-bonded and discharged through the discharge port;
• a partitioned cylinder disposed between the case and the inner cylinder partitioning the space into an inner space toward the inner cylinder and an outer space toward the case,
• wherein the inner space and the outer space are each filled with the ion exchange resin;
• an upper cap including a center air hole, said upper end cap being detachably fitted on an open upper part of the case;
• wherein the case has a first fitting groove formed around a front end of the discharge port, the first fitting groove having a diameter larger than the second fitting groove;
• wherein a second fitting groove is formed around the center air hole in the upper end cap;
• ring shaped packing members formed of soft rubber or soft synthetic resin inserted in the first and second fitting grooves to prevent leakage;
• and,
• wherein upper and lower ends of the inner cylinder are detachably fitted into the first and second fitting grooves, respectively.