Abstract: The present application relates to the field of fuel filter components of internal combustion engines, and discloses a filter with a rotating device, including a filter element and the rotating device installed on the filter element. The filter element is provided with a clamping structure matched with the rotating device. The rotating device is provided with an eccentrically arranged fuel return plug, an internal opening, and a drive portion structure. By arranging the rotating device, the service life of this filter is prolonged. By forming the internal opening and arranging the fuel return plug, the installation efficiency and convenience of this filter are improved.

Abstract: The present application relates to the field of fuel filter components of internal combustion engines, and discloses a fuel filter element, including a support tube, a filter medium, and an upper cover plate and a lower cover plate. The upper cover plate is provided with a first channel. The lower cover plate is provided with a second channel. An air duct is arranged between the upper cover plate and the lower cover plate. The air duct communicates with the first channel and the second channel, and the air duct is positioned on an outer side of the filter medium. The filter medium is arranged between the air duct and a fuel feeding position, such that the stability of a fuel supply pressure and an exhaust state of this fuel filter element is enhanced.

Abstract: The present application discloses a fuel-water separation filter element capable of exhausting gas, and a filter. The filter element includes a filter element frame, a filter medium, and an exhaust valve assembly. An upper end cover and a lower end cover are arranged at an upper end and a lower end of the filter element frame. The upper end cover is provided with a recess surface along an axial direction of the filter element frame. The exhaust valve assembly includes a valve seat and a valve element. The valve seat and the recess surface form an exhaust cavity communicating with the inside of the filter element. The exhaust valve assembly in the present application can effectively exhaust gas in the filter.

Abstract: The present application discloses a filter device, including a housing, a primary filter body, and a secondary filter body. The housing is formed with a first channel for fuel to flow in. The primary filter body includes a support fence, a particulate filter medium, and end covers. The secondary filter body is formed with a second channel for the fuel to flow out from the secondary filter body and is configured to block water and allow the fuel to pass. The filter device in the present invention can make it possible to arrange more particulate filter media in a limited space, thereby improving the filtration capacity of a filter element per unit volume.

Abstract: The present application relates to the field of fuel filter components of internal combustion engines, and discloses a fuel filter element, including a filter element main body and a protective cover. A fuel return column extends from an upper end surface of the filter element main body. The protective cover is formed with a U-shaped groove adapted to the fuel return column, is adaptively installed on the filter element main body and is of an annular hollow structure. The U-shaped groove accommodates the fuel return column to form a protective assembly. Therefore, the problem of poor sealing caused by installation deformation damage and installation deviation of the fuel return column, and the cost of a hollow structure of the protective cover are reduced.