Multi-layer lubricating oil filter element

Abstract

The utility model relates to the technical field of lubricating oil filter elements, and discloses a multilayer lubricating oil filter element which comprises a filter cartridge, one end of the filter cartridge is communicated with an oil inlet, the other end of the filter cartridge is connected with an oil outlet cavity, one end, deviating from the filter cartridge, of the oil outlet cavity is in threaded connection with an end cover, and an oil outlet is formed in the bottom of the oil outlet cavity. A mounting disc is movably clamped to the oil outlet cavity, a plurality of filter screens are placed on the mounting disc, the filter screens are in a wave shape, the filter screens are coaxially arranged on the outer side of the oil inlet in a surrounding mode, an oil passing groove is formed in the bottom of the mounting disc, and the oil passing groove communicates with the filter cartridge and the oil outlet cavity; the device solves the problems that the filter screen is inconvenient to replace and the filtering effect is easy to reduce, the area of the filter screen is increased, the filtering effect is improved, meanwhile, the oil outlet cavity is separated from the filter cartridge, the oil pressure of the oil outlet cavity is reduced, the oil outlet cavity can be connected through a more convenient threaded cover, and disassembly is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of lubricating oil filter technology, and more specifically, it relates to a multilayer lubricating oil filter. Background Technology

[0002] The high-pressure oil outlet line of the hydraulic system's oil pump is usually equipped with a lubricating oil filter to ensure that there are no impurities in the oil, thereby protecting the control components and actuators, effectively preventing contamination, avoiding malfunctions, and extending the service life of the components.

[0003] Chinese invention patent application number 202410697416.7 discloses a multi-layer lubricating oil filter element structure. The filter element back cover is designed to be detachable and sealed with several bolts. The back cover can be removed to replace the filter element. However, in order to ensure the sealing performance, a large number of bolts are usually set, which makes disassembly cumbersome. Moreover, its filtration area is limited. After a certain period of use, the clogging area increases before the replacement point is reached, which affects the filtration effect. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-layer lubricating oil filter element with high filtration efficiency and easy replacement.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A multi-layer lubricating oil filter element includes a filter cylinder, one end of which is connected to an oil inlet, and the other end of which is connected to an oil outlet. An end cap is threadedly connected to the end of the oil outlet away from the filter cylinder. An oil outlet is provided at the bottom of the oil outlet. An installation plate is movably engaged with the oil outlet. Several filter screens are placed on the installation plate. The filter screens are wavy and are coaxially arranged around the outside of the oil inlet. An oil passage groove is provided at the bottom of the installation plate, and the oil passage groove connects the filter cylinder and the oil outlet.

[0007] The present invention is further configured such that: a connecting post is coaxially arranged on the side of the mounting plate facing the oil outlet cavity; a spring is snapped onto the end cover; and the other end of the spring abuts against the mounting plate and is sleeved on the connecting post.

[0008] The present invention is further configured such that: a plurality of fixed meshes are coaxially connected to the side of the mounting plate facing the filter cylinder, and the fixed meshes are respectively disposed on the inner and outer sides of the plurality of filter meshes.

[0009] The present invention is further configured such that: a plurality of limiting posts are connected to the side of the mounting plate facing the filter cylinder, and the plurality of limiting posts abut against the crests or troughs of the wave structure of each filter screen.

[0010] The present invention is further configured such that: a sealing ring is installed in the oil outlet cavity, and the sealing ring abuts against the end cap.

[0011] The advantages of this utility model are:

[0012] 1. By setting the filter screen to a wavy shape, the total area of ​​the filter screen is increased, so that even when the filter screen is partially clogged, the lubricating oil can still maintain a large contact area with the filter screen, thereby improving the filtration efficiency;

[0013] 2. The opening of the oil outlet chamber is sealed with a threaded end cap. The end cap presses the mounting plate onto the oil outlet chamber with a spring, thereby fixing the filter screen and separating the oil outlet chamber from the filter cartridge. This reduces the oil pressure in the oil outlet chamber, making it less prone to leakage at the thread. This reduces the oil pressure in the oil outlet chamber and allows for a more convenient connection method for the end cap, making disassembly easier than bolt connections. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of one embodiment of the present invention;

[0015] Figure 2 For along Figure 1 The cross-sectional view along line AA is shown below;

[0016] Figure 3 For along Figure 1 The BB line cross-section shown;

[0017] Figure 4 for Figure 2 Enlarged view of section C shown;

[0018] Figure 5 for Figure 3 Enlarged view of section D shown;

[0019] In the diagram: 1. Filter cylinder; 2. Oil outlet chamber; 21. Mounting plate; 22. Connecting column; 23. Fixing mesh; 24. Limiting column; 25. Oil passage groove; 3. End cap; 4. Oil inlet; 5. Oil outlet; 6. Filter screen; 7. Spring. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art described in this application.

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] Please see Figure 1-5 The present invention provides the following technical solution:

[0024] A multi-layer lubricating oil filter element includes a filter cylinder 1. One end of the filter cylinder 1 is connected to an oil inlet 4, and the other end of the filter cylinder 1 is connected to an oil outlet chamber 2. An end cap 3 is threadedly connected to the end of the oil outlet chamber 2 away from the filter cylinder 1. A sealing ring is installed in the oil outlet chamber 2, and the sealing ring abuts against the end cap 3. An oil outlet 5 is opened at the bottom of the oil outlet chamber 2. An installation plate 21 is movably snapped onto the right side of the oil outlet chamber 2. Several filter screens 6 are placed on the installation plate 21. An oil passage groove 25 is opened at the bottom of the installation plate 21, and the oil passage groove 25 connects the filter cylinder 1 and the oil outlet chamber 2. The filter cylinder 1 can be disassembled and assembled by rotating the end cap 3. The operation is convenient. When the lubricating oil is in the filter cylinder, the oil pressure in the filter screen 6 is high due to the blocking and filtering effect of the filter screen 6, which separates the oil outlet chamber 2 from the filter cylinder 1 and reduces the oil pressure in the oil outlet chamber 2. When the threaded end cap 3 is used for sealing, the leakage of oil is reduced.

[0025] The filter screen 6 is wavy and is coaxially arranged around the outside of the oil inlet 4. The wavy structure increases the total area of ​​the filter screen 6, thereby increasing the contact area between the oil and the filter screen 6 and improving the filtration efficiency.

[0026] A connecting post 22 is coaxially arranged on the side of the mounting plate 21 facing the oil outlet chamber 2. A spring 7 is snapped onto the end cover 3. The other end of the spring 7 abuts against the mounting plate 21 and is sleeved on the connecting post 22. When the end cover 3 is screwed onto the oil outlet chamber 2, the spring 7 presses the mounting plate 21 to the right and fixes it onto the oil outlet chamber 2, thus fixing the position of the mounting plate 21 and the filter screen 6. When the end cover 3 is unscrewed, the mounting plate 21 is released, and the mounting plate 21 and the filter screen 6 on it can be pulled out of the filter cylinder 1 through the connecting post 22, which facilitates the replacement of the filter screen 6 and makes the operation convenient.

[0027] A number of fixing meshes 23 are coaxially connected to the side of the mounting plate 21 facing the filter cylinder 1. The fixing meshes 23 are respectively located on the inner and outer sides of the filter screens 6. A number of limiting posts 24 are connected to the side of the mounting plate 21 facing the filter cylinder 1. The limiting posts 24 abut against the crests or troughs of the wave structure of each filter screen 6. The fixing meshes 23 and the limiting posts 24 can fix the filter screens 6, so that the filter screens 6 will not deform under the action of oil gravity, ensuring the spacing between each filter screen 6, preventing the filter screens 6 from overlapping, and ensuring filtration efficiency.

[0028] Specifically, the filter screen 6 is made into a wavy shape, which increases the total area of ​​the filter screen 6, so that when the filter screen 6 is partially blocked, the lubricating oil can maintain a large contact area with the filter screen 6, thereby improving the filtration efficiency.

[0029] The opening of the oil outlet chamber 2 is sealed with a threaded end cap 3. The end cap 3 presses the mounting plate 21 onto the oil outlet chamber 2 through the spring 7, thereby fixing the filter screen 6 and separating the oil outlet chamber 2 from the filter cylinder 1. This reduces the oil pressure in the oil outlet chamber 2, making it less likely for leakage to occur at the thread. This reduces the oil pressure in the oil outlet chamber 2, allowing the end cap 3 to adopt a more convenient connection method, which is easier to disassemble than bolt connection.

[0030] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar counterparts and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multilayer lubricating oil filter element, comprising a filter cartridge (1), characterized in that: One end of the filter cylinder (1) is connected to an oil inlet (4), and the other end of the filter cylinder (1) is connected to an oil outlet (2). The end of the oil outlet (2) away from the filter cylinder (1) is threaded with an end cap (3). An oil outlet (5) is opened at the bottom of the oil outlet (2). An installation plate (21) is movably attached to the oil outlet (2). Several filter screens (6) are placed on the installation plate (21). The filter screens (6) are wavy and are coaxially arranged around the outside of the oil inlet (4). An oil passage groove (25) is opened at the bottom of the installation plate (21). The oil passage groove (25) connects the filter cylinder (1) and the oil outlet (2).

2. The multilayer lubricating oil filter element according to claim 1, characterized in that: The mounting plate (21) is coaxially provided with a connecting post (22) facing the oil outlet chamber (2). A spring (7) is snapped onto the end cover (3). The other end of the spring (7) abuts against the mounting plate (21) and is sleeved on the connecting post (22).

3. The multilayer lubricating oil filter element according to claim 2, characterized in that: The mounting plate (21) is coaxially connected to several fixed meshes (23) on the side facing the filter cylinder (1), and the fixed meshes (23) are respectively located on the inner and outer sides of the several filter meshes (6).

4. A multilayer lubricating oil filter element according to claim 3, characterized in that: The mounting plate (21) is connected to a number of limiting posts (24) on the side facing the filter cylinder (1), and the number of limiting posts (24) abut against the crests or troughs of the wave structure of each filter screen (6).

5. A multilayer lubricating oil filter element according to claim 4, characterized in that: A sealing ring is installed in the oil outlet chamber (2), and the sealing ring abuts against the end cap (3).

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