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 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 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 provides a fuel-water separation filter element and a fuel filter. The filter element includes a fuel duct, a water blocking tube, and a filter medium. An upper cover plate is connected to one end of the fuel duct. The upper cover plate is formed with an air collection cavity in the fuel duct. The water blocking tube is provided with a water blocking portion positioned in the fuel duct, and a vent pin axially extends from an end surface of one end of the water blocking portion. The vent pin respectively communicates with the air collection cavity and the outside. During operation of the filter element in the present application, gas mixed into a fuel supply system may be effectively exhausted.

Abstract: The present application discloses an electrostatically conductive filter element. An annular end cover made of a conductive material is connected to one end of a filter medium of the filter element. An annular raised wall axially extends from an inner opening of the annular end cover. Conductive portions radially extending inwards and configured to be in hard connection with an external conductive device are arranged on an inner surface of the annular raised wall. During use of this filter element, the conductive portions can be stably electrically connected to the external conductive device, and the static electricity generated by the filter medium is dissipated to the outside by the external conductive device.

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.

Abstract: The present application relates to the technical field of filter assemblies, in particular to an improved filter, including a. filter housing connected to a filter assembly, a connector, an end face seal component, and a filter element. “L”-shaped clamping grooves are formed in an inner wall of the connector. Each of the clamping grooves is provided with a limit bulge. A baffle is installed in the connector. At least two or more clamping blocks matched with the clamping grooves are arranged around an outer wall of the baffle. By arranging the baffle, the replacement and installation of the filter element are facilitated.

Abstract: The present invention relates to a rice seedling substrate and a preparation method thereof, which is of the technical field of rice planting. The rice seedling substrate according to the invention was prepared from the raw materials includes the following by volume: 40-60% of dredging sediment, 30-50% of vegetable straw, and 10-30% of hickory shell. The rice seedling substrate according to the invention can not only turn waste into treasure to improve the recycling rate of sediment and agricultural and forestry waste resources, but also save the limited cultivated soils, reduce the production cost of rice seedling substrate, and promote the healthy and sustainable development of rice planting. Therefore, The inventive substrate has significant benefits in terms of economics, sociology and ecology.

Abstract: The present invention relates to the field of liquid filtration, in particular, to a filter suitable for liquid filtration. The present invention is achieved by the following technical solutions: a filter suitable for liquid filtration comprises a cartridge body, the cartridge body being detachably connected with a closure cover, the cartridge body and the closure cover together constituting a receiving cavity for receiving a filter element, and further comprises a fixing device for fixing the closure cover to the cartridge body. An object of the present invention is to provide a filter suitable for liquid filtration, wherein the filter cartridge is provided with a detachably mounted upper cover, so that the two parts of the filter cartridge do not damage the filter element therein during the friction welding process, and the filter element may be replaced and mounted conveniently and reliably.