A new filter cartridge

Abstract

This utility model relates to a novel filter element, comprising an end cap, a sealing plate, a filter element body, and a base. The filter element body is cylindrical, hollow inside, and filled with an inner steel mesh lining. The ridges of the pleats in the filter element body are parallel to the axial direction of the filter element body. Positioning rods are inserted into the ridges and grooves of the pleats. The two ends of the positioning rods are inserted into the sealing plates installed at both ends of the filter element body. The sealing plates are located inside the end caps. The end cap located at the lower end of the filter element body is connected to the base. Several oil inlet holes are provided on the edge of the base. A sealing joint extending into the base is provided at the bottom of the inner steel mesh lining. A screen for fixing a spring soft cell is provided inside the inner steel mesh lining. The top of the spring soft cell faces downward and movably abuts against the sealing joint. The sealing joint connects the base and the inner steel mesh lining. The positioning rods fix the folding spacing of the filter element body, maintain a uniform oil filtration channel, and avoid local adhesion or even blockage of the filter paper.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a novel filter element. Background Technology

[0002] A fuel filter is a device that filters the fuel entering the engine. A fuel filter consists of a filter element and a housing. The filter element is encapsulated within the housing, which has a fuel inlet and a fuel outlet. The filter element comprises a core and filter paper. The filter paper is continuously folded in a V-shape along the circumference of the core to form a cylinder. Fuel enters the filter element from its outer circumference, is filtered, and then enters the inner cavity of the core. After filtration, it exits through the fuel outlet. Existing filter elements require end caps to seal both ends after the V-fold, which places high demands on adhesion. Defects such as misalignment and poor adhesion at the adhesion points are prone to occur, thus requiring improvement. Utility Model Content

[0003] Therefore, it is necessary to provide a new type of filter element to address the above problems.

[0004] A novel filter element includes an end cap, a sealing plate, a filter element body, and a base. The filter element body is cylindrical, hollow inside, and filled with an inner steel mesh. The ridges of the pleats in the filter element body are parallel to the axial direction of the filter element body. Positioning rods are inserted into the ridges and grooves of the pleats. The two ends of the positioning rods are inserted into the sealing plates installed at both ends of the filter element body. The sealing plates are located inside the end caps. The end cap located at the lower end of the filter element body is connected to the base. The base has several oil inlet holes on its edge. A sealing joint extending into the base is provided at the bottom of the inner steel mesh. A screen for fixing a spring bladder is provided inside the inner steel mesh. The top of the spring bladder faces downward and movably abuts against the sealing joint. The sealing joint connects the base and the inner steel mesh.

[0005] Preferably, the top of the spring bladder is provided with a rubber ball head, which abuts against the conical hole in the middle of the sealing joint.

[0006] Preferably, a guide post is provided between the screen and the sealing joint, and the skirt of the spring bladder is in movable contact with the guide post.

[0007] Preferably, a check valve is also provided at the top of the inner steel mesh lining.

[0008] The advantages of this utility model are: the positioning rod fixes the folding spacing of the filter element body, maintains a uniform oil filtration channel, avoids local adhesion or even blockage of the filter paper, and the positioning rod cooperates with the sealing plate to ensure that the folding direction of the filter element body end is along a straight line, which facilitates the application of adhesive. Attached Figure Description

[0009] Figure 1This is a three-dimensional schematic diagram of a novel filter element according to one embodiment;

[0010] Figure 2 This is a schematic diagram of a new type of filter element. Detailed Implementation

[0011] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0012] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0014] like Figures 1-2As shown, a novel filter element includes an end cap 1, a sealing plate 2, a filter element body 3, and a base 4. The filter element body 3 is cylindrical, hollow inside, and filled with an inner steel mesh 5. The ridges of the pleats of the filter element body 3 are parallel to the axial direction of the filter element body 3. Positioning rods 31 are inserted into the ridges and grooves of the pleats. The two ends of the positioning rods 31 are inserted into the sealing plates 2 installed at both ends of the filter element body 3. The sealing plates 3 are set inside the end cap 1. The end cap 1 located at the lower end of the filter element body 3 is connected to the base 4. The edge of the base 4 is provided with several oil inlet holes 41. The bottom of the inner steel mesh 5 is provided with a sealing joint 51 extending into the base 4. The inner steel mesh 5 is provided with a screen 52 for fixing a spring soft cell 6. The top of the spring soft cell 6 faces downward and moves against the sealing joint 51. The sealing joint 51 connects the base 4 and the inner steel mesh 5. Specifically, in this embodiment, the end cap 1 is installed on the side of the sealing plate 2 away from the filter element body 3 for sealing and protection. The sealing plate 2 is installed on both sides of the filter element body 3, and several positioning rods 31 are inserted inside the filter element body 3. Specifically, the positioning rods 31 are inserted into the spine and groove of the filter element body 3, so that after the filter element body 3 is folded in a V-shape, the positioning rods 31 act as a skeleton to prevent the filter element body 3 from collapsing or twisting under the impact of high-pressure oil pressure, ensuring the integrity of the filter element body 3 during long-term use. At the same time, the two ends of the positioning rods 31 are connected to the sealing plate 2. Specifically, the points can be determined on the sealing plate 2 first, and then the positioning rods 31 are welded to the corresponding points on the sealing plate 2. The fixed position of the positioning rods 31 makes the folding spacing of the filter element body 3 fixed, which can maintain a uniform filter oil channel and avoid local adhesion or even blockage of the filter paper. At the same time, the positioning rods 31 cooperate with the sealing plate 2 to ensure that the folding direction of the end of the filter element body 3 is along a straight line, which facilitates the application of adhesive. Furthermore, an inner steel mesh 5 is installed inside the filter element body 3 as an internal support frame, which will not affect the passage of filtered fuel. An oil outlet pipe is provided at the top end cap 1, which is connected to the inner steel mesh 5, so that the filtered fuel can be discharged smoothly. A spring bladder 6 is installed inside the inner steel mesh 5. The spring bladder 6 is fixed by a screen 52 and its movable end is facing downward. When impurities adhere to the surface of the filter element body 3 to the limit, causing blockage, the oil pressure inside the filter increases. At this time, the fuel enters the sealing joint 51 through the oil inlet 41 of the base 4, and applies oil pressure to the movable end of the spring bladder 6, causing the spring bladder 6 to retract under pressure. At this time, the oil inlet 41 on the base 4 can be connected to the inner steel mesh 5 through the sealing joint 51, preventing the engine from running dry due to lack of oil and protecting the oil circuit seals and filter housing.

[0015] like Figure 2As shown, the top of the spring soft bladder 6 is provided with a rubber ball head 61, which abuts against the conical hole 511 in the middle of the sealing joint 51. Specifically, when the rubber ball head 61 is inserted into the conical hole 511 under the stress of the spring soft bladder 6 itself, it deforms under pressure and fits against the inner wall of the conical hole 511, resulting in a very strong seal at the connection and preventing unfiltered fuel from entering from the connection between the two.

[0016] like Figure 2 As shown, a guide post 53 is provided between the screen 52 and the sealing joint 51, and the skirt of the spring bladder 6 is in movable contact with the guide post 53. Specifically, the guide post 53 is used to restrict the displacement direction of the spring bladder 6, so that it can only extend or compress along the axial direction of the inner steel mesh 5, ensuring that the top of the spring bladder 6 can fit into the sealing joint 51 when it expands back after being compressed.

[0017] like Figure 2 As shown, a check valve 54 is also provided at the top of the inner steel mesh 5, which can be used to prevent fuel from flowing back.

[0018] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A novel filter element, characterized in that: The filter includes end caps, sealing plates, a filter element body, and a base. The filter element body is cylindrical, hollow inside, and filled with an inner steel mesh lining. The ridges of the pleats in the filter element body are parallel to the axial direction of the filter element body. Positioning rods are inserted into the ridges and grooves of the pleats. The two ends of the positioning rods are inserted into the sealing plates installed at both ends of the filter element body. The sealing plates are located inside the end caps. The end cap located at the lower end of the filter element body is connected to the base. The base has several oil inlet holes on its edge. The bottom of the inner steel mesh lining has a sealing joint extending into the base. A screen for fixing a spring bladder is installed inside the inner steel mesh lining. The top of the spring bladder faces downward and movably abuts against the sealing joint. The sealing joint connects the base and the inner steel mesh lining.

2. The novel filter element as described in claim 1, characterized in that: The top of the spring bladder is provided with a rubber ball head, which abuts against the conical hole in the middle of the sealing joint.

3. The novel filter element as described in claim 2, characterized in that: A guide post is provided between the screen and the sealing joint, and the skirt of the spring bladder is in movable contact with the guide post.

4. The novel filter element as described in claim 1, characterized in that: A check valve is also installed at the top of the inner steel mesh lining.

Images