Fuel-water separation filter element and fuel filter

A fuel filter, comprising:

• a fuel-water separation filter element;
• and
• a housing assembly, the fuel-water separation filter element being arranged in the housing assembly;
• wherein the fuel-water separation filter element comprises:
• a fuel duct, an upper cover plate being connected to one end of the fuel duct, and an air collection cavity being formed in the fuel duct, wherein a plurality of helical ribs are arranged on an outer side wall of the fuel duct, a flow channel for fuel is formed between the ribs, and a fuel passing hole is formed between the two ribs on the outer side wall of the fuel duct;
• a water blocking tube provided with a water blocking portion positioned in the fuel duct, the water blocking portion and an inner wall of the fuel duct being formed with a water sedimentation channel, a vent pin axially extending from an end surface of one end of the water blocking portion, the vent pin respectively communicating with the air collection cavity and the outside, an outer tube wall of a main body of the water blocking tube being connected to the other end of the fuel duct, and a lower cover plate being connected to an opening in the other end of the main body of the water blocking tube;
• and
• a filter medium arranged on the periphery of the fuel duct and the periphery of the water blocking tube, two ends of the filter medium being respectively connected to the upper cover plate and the lower cover plate;
• wherein the vent pin comprises a first pin communicating with the air collection cavity from the end surface and a second pin communicating to the outside from the end surface:
• wherein the air collection cavity is formed with a first through hole communicating with the first pin and a second through hole communicating with the inside of an assembly, and the first pin is hermetically connected to the first through hole;
• and
• wherein a hole diameter of the second pin is 0.3-0.7 mm.