Lubricating oil filter

Abstract

The utility model discloses a lubricating oil filter which comprises a shell, a cover plate is arranged at the top of the shell, an inner container is fixedly connected to the bottom in the shell, cylindrical filter element oil paper is arranged in the shell, and an inner top ring plate is fixedly connected to the position, close to the outer end, of the bottom of the cover plate. An annular clamping groove is formed in the center of the top of the inner container, and a first annular clamping strip is fixedly connected to the position, close to the outer side, of the bottom of the inner top annular plate. According to the lubricating oil filter, by designing a clamping structure of the inner top annular plate, the first annular clamping strip at the bottom of the inner top annular plate and the annular clamping groove in the top of the inner container, rapid connection and disassembly between the cover plate and the inner container are achieved, when cylindrical filter element oil paper needs to be replaced, a user only needs to release clamping between a fixing rod and a fixing groove, and the cover plate and the shell can be easily separated; and the whole filter does not need to be detached from the system, so that the replacement process of the filter paper is greatly simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to an oil filter. Background Technique

[0002] In the lubricating oil system, the filter plays a crucial role. It is responsible for removing impurities and particulate matters in the lubricating oil to ensure the cleanliness of the lubricating oil and the normal operation of the system. However, the traditional design of lubricating oil filters often adopts an integral structure, that is, each component of the filter (such as the housing, filter element, etc.) is fixedly connected together to form an inseparable whole.

[0003] Due to the integral design of the filter, when the filter paper is blocked or fails due to long-term use and needs to be replaced, users often need to remove the entire filter from the system and then find professional maintenance personnel for disassembly and replacement. This process is not only cumbersome and complex, but also time-consuming and laborious, greatly reducing the maintenance efficiency of the filter. Content of the Utility Model

[0004] The purpose of the utility model is to provide an oil filter to solve the problem that due to the integral design of the filter, when the filter paper is blocked or fails due to long-term use and needs to be replaced, users often need to remove the entire filter from the system and then find professional maintenance personnel for disassembly and replacement. This process is not only cumbersome and complex, but also time-consuming and laborious, greatly reducing the maintenance efficiency of the filter as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an oil filter, including a housing, a cover plate is arranged at the top of the housing, an inner container is fixedly connected to the bottom inside the housing, a cylindrical filter paper element is arranged inside the housing, an inner top ring plate is fixedly connected to the outer end position at the bottom of the cover plate, an annular clamping groove is opened at the center of the top of the inner container, an annular clamping strip one is fixedly connected to the outer side position at the bottom of the inner top ring plate, and the bottom of the annular clamping strip one penetrates into the inside of the annular clamping groove and is clamped with the annular clamping groove. Arc-shaped positioning grooves are opened at the outer end positions on both sides of the cover plate, arc-shaped positioning plates are fixedly connected to both sides of the top of the housing, the top of the arc-shaped positioning plate penetrates to the outside of the arc-shaped positioning groove and is clamped with the arc-shaped positioning groove, fixing grooves are opened at the center positions on the opposite sides of the two arc-shaped positioning plates, outer plates are fixedly connected to both sides of the cover plate, an activity groove is opened inside the outer plate, an activity block is slidably connected to the inside of the activity groove, fixing rods are fixedly connected to the opposite sides of the two activity blocks, and the side of the fixing rod away from the activity block penetrates into the inside of the fixing groove and is clamped with the fixing groove.

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] This lubricating oil filter realizes the quick connection and disassembly between the cover plate and the inner tank through the designed clamping structure of the inner top ring plate and the annular clamping strip one at its bottom with the annular clamping groove at the top of the inner tank. When the cylindrical filter paper needs to be replaced, the user only needs to release the clamping of the fixing rod and the fixing groove, and then can easily separate the cover plate from the housing without removing the entire filter from the system, which greatly simplifies the replacement process of the filter paper. Between the cover plate and the inner tank and the housing, as well as at the connection between the cover plate and the outside of the housing, sealing elements such as sealing ring one, annular sealing gasket, and sealing ring two are respectively provided to ensure the tightness of the internal and external connections of the filter and effectively prevent lubricating oil leakage. The outer ring plate one and the outer ring plate two are clamped by the annular clamping strip two and further fixed by the fixing bolts, which enhances the overall structural stability of the filter and at the same time ensures a good sealing effect. By setting a return spring between the movable block and the movable groove, when the fixing rod is clamped with the fixing groove, the return spring can provide an additional pressing force to ensure the tight connection between the cover plate and the housing and reduce the risk of oil leakage caused by loosening, thereby improving the service life and overall performance of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic structural diagram of the present utility model;

[0009] Figure 2 is the Figure 1 partial enlarged schematic diagram of A in the present utility model;

[0010] Figure 3 is the Figure 1 partial enlarged schematic diagram of B in the present utility model;

[0011] Figure 4 is the three-dimensional structural diagram of the cover plate of the present utility model.

[0012] In the figure: 1, housing; 2, cover plate; 3, inlet oil pipe; 4, inner tank; 5, central column; 6, cylindrical filter paper; 7, outlet oil pipe; 8, inner top ring plate; 9, annular clamping groove; 10, annular clamping strip one; 11, sealing ring one; 12, arc-shaped positioning groove; 13, arc-shaped positioning plate; 14, fixing groove; 15, outer plate; 16, movable groove; 17, movable block; 18, fixing rod; 19, outer ring plate one; 20, outer ring plate two; 21, annular clamping strip two; 22, sealing ring two; 23, fixing bolt; 24, pull rod; 25, return spring; 26, pull plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0014] Please refer to Figures 1-4 , the present invention provides a technical solution: a lubricating oil filter, including a housing 1, a cover plate 2 is arranged at the top of the housing 1, an inner liner 4 is fixedly connected to the bottom inside the housing 1, a cylindrical filter paper 6 is arranged inside the housing 1, an inner top ring plate 8 is fixedly connected to the outer end position at the bottom of the cover plate 2, an annular card slot 9 is opened at the center of the top of the inner liner 4, an annular card strip one 10 is fixedly connected to the outer side position at the bottom of the inner top ring plate 8, the bottom of the annular card strip one 10 penetrates to the inside of the annular card slot 9 and is clamped with the annular card slot 9, arc-shaped positioning grooves 12 are opened at the outer end positions on both sides of the cover plate 2, arc-shaped positioning plates 13 are fixedly connected to both sides of the top of the housing 1, the top of the arc-shaped positioning plate 13 penetrates to the outside of the arc-shaped positioning groove 12 and is clamped with the arc-shaped positioning groove 12, fixing grooves 14 are opened at the center positions on the opposite sides of the two arc-shaped positioning plates 13, outer plates 15 are fixedly connected to both sides of the cover plate 2, an activity groove 16 is opened inside the outer plate 15, an activity block 17 is slidably connected inside the activity groove 16, fixing rods 18 are fixedly connected to the opposite sides of the two activity blocks 17, and the side of the fixing rod 18 away from the activity block 17 penetrates to the inside of the fixing groove 14 and is clamped with the fixing groove 14.

[0015] A central column 5 is fixedly connected to the center of the inner bottom of the inner liner 4, the center of the top of the central column 5 is sleeved and clamped with the cylindrical filter paper 6, an oil outlet pipe 7 is communicated with the center of the bottom of the housing 1, the top of the oil outlet pipe 7 is communicated with the bottom of the inner liner 4, and an oil inlet pipe 3 is communicated with the center position of the cover plate 2.

[0016] An annular seat is fixedly connected to the outer side position at the top of the cylindrical filter paper 6, an annular gasket is fixedly connected to the top of the annular seat, and the top of the annular gasket penetrates to the inner side position at the bottom of the inner top ring plate 8 and contacts the inner top ring plate 8.

[0017] Sealing rings one 11 are fixedly connected to both sides of the top of the inner liner 4 corresponding to the annular card slot 9, and the top of the sealing ring one 11 contacts the bottom of the inner top ring plate 8.

[0018] Pulling rods 24 are fixedly connected to the opposite sides of the two activity blocks 17, and the side of the pulling rod 24 away from the activity block 17 penetrates to the outside of the outer plate 15 and is fixedly connected to a pulling plate 26.

[0019] A return spring 25 is sleeved on the outer side of the pull rod 24, and both sides of the return spring 25 are fixedly connected to the movable block 17 and the inner wall of the movable groove 16 respectively.

[0020] On the top of the outer side of the housing 1, an external ring plate one 19 is fixedly connected. On the bottom of the outer side of the cover plate 2, an external ring plate two 20 is fixedly connected. At the center of the top of the external ring plate one 19, an annular clamping strip two 21 is fixedly connected. The top of the annular clamping strip two 21 penetrates into the inside of the external ring plate two 20 and is clamped with the inside of the external ring plate two 20. On both sides of the annular clamping strip two 21 corresponding to the top of the external ring plate one 19, a sealing ring two 22 is fixedly connected. The top of the sealing ring two 22 contacts the bottom of the external ring plate two 20. The top of the external ring plate two 20 is threadedly connected with a fixing bolt 23. The bottom of the fixing bolt 23 penetrates into the inside of the annular clamping strip two 21 and is threadedly connected with the annular clamping strip two 21.

[0021] Working principle: Align the inner top ring plate 8 at the bottom of the cover plate 2 with the annular card slot 9 at the top of the inner container 4, so that the annular clamping strip one 10 at the bottom of the inner top ring plate 8 penetrates and is clamped into the annular card slot 9 to realize the preliminary connection between the cover plate 2 and the inner container 4. Align the arc-shaped positioning grooves 12 on both sides of the cover plate 2 with the arc-shaped positioning plates 13 at the top of the housing 1. The top of the arc-shaped positioning plate 13 penetrates through the arc-shaped positioning groove 12 to realize further positioning and connection. Under the action of the return spring 25, the movable blocks 17 in the outer plates 15 on both sides of the cover plate 2 push the fixing rods 18 into the fixing grooves 14 on the arc-shaped positioning plates 13 at the top of the housing 1 to complete the fixed connection between the cover plate 2 and the housing 1. Align the external ring plate two 20 on the outer side of the cover plate 2 with the external ring plate one 19 on the outer side of the housing 1. The annular clamping strip two 21 penetrates through the external ring plate two 20 and is clamped. At the same time, the sealing ring two 22 contacts and seals the bottom of the external ring plate two 20. Finally, threadedly connect the external ring plate two 20 and the annular clamping strip two 21 through the fixing bolt 23 to ensure the overall stability of the filter.

[0022] In summary, for this lubricating oil filter, by designing the clamping structure of the inner top ring plate 8 and the annular clamping strip 10 at its bottom with the annular clamping groove 9 at the top of the inner tank 4, the quick connection and disassembly between the cover plate 2 and the inner tank 4 are realized. When the cylindrical filter paper 6 needs to be replaced, the user only needs to release the clamping of the fixing rod 18 and the fixing groove 14, and then the cover plate 2 and the housing 1 can be easily separated without removing the entire filter from the system, greatly simplifying the filter paper replacement process. Between the cover plate 2 and the inner tank 4, and between the cover plate 2 and the housing 1, as well as at the external connection of the cover plate 2 and the housing 1, sealing elements such as the first sealing ring 11, the annular sealing gasket, and the second sealing ring 22 are respectively provided to ensure the tightness of the internal and external connections of the filter and effectively prevent lubricating oil leakage. The outer ring plate 19 and the outer ring plate 20 are clamped by the annular clamping strip 21 and further fixed by the fixing bolt 23, enhancing the overall structural stability of the filter while ensuring a good sealing effect. By arranging the return spring 25 between the movable block 17 and the movable groove 16, when the fixing rod 18 is clamped with the fixing groove 14, the return spring 25 can provide an additional pressing force to ensure the tight connection between the cover plate 2 and the housing 1 and reduce the risk of oil leakage caused by loosening, thereby improving the service life and overall performance of the filter.

[0023] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lubricating oil filter, comprising a housing (1), characterized in that: A cover plate (2) is provided at the top of the housing (1). An inner container (4) is fixedly connected to the bottom inside the housing (1). A cylindrical filter paper (6) is arranged inside the housing (1). An inner top ring plate (8) is fixedly connected to the outer end position at the bottom of the cover plate (2). An annular clamping groove (9) is formed at the center of the top of the inner container (4). An annular clamping strip one (10) is fixedly connected to the outer side position at the bottom of the inner top ring plate (8). The bottom of the annular clamping strip one (10) penetrates into the inside of the annular clamping groove (9) and is clamped with the annular clamping groove (9). Arc-shaped positioning grooves (12) are formed at the outer end positions on both sides of the cover plate (2). Arc-shaped positioning plates (13) are fixedly connected to both sides of the top of the housing (1). The top of the arc-shaped positioning plate (13) penetrates outside the arc-shaped positioning groove (12) and is clamped with the arc-shaped positioning groove (12). Fixing grooves (14) are formed at the center positions on the opposite sides of the two arc-shaped positioning plates (13). Outer plates (15) are fixedly connected to both sides of the cover plate (2). An activity groove (16) is formed inside the outer plate (15). An activity block (17) is slidably connected inside the activity groove (16). Fixing rods (18) are fixedly connected to the opposite sides of the two activity blocks (17). The side of the fixing rod (18) away from the activity block (17) penetrates into the inside of the fixing groove (14) and is clamped with the fixing groove (14).

2. The lubricating oil filter according to claim 1, characterized in that: A central column (5) is fixedly connected to the center of the inner bottom of the inner container (4). The center of the top of the central column (5) is sleeved and clamped with the cylindrical filter paper (6). An oil outlet pipe (7) is communicated with the center of the bottom of the housing (1). The top of the oil outlet pipe (7) is communicated with the bottom of the inner container (4). An oil inlet pipe (3) is communicated with the center position of the cover plate (2).

3. A lubricating oil filter according to claim 1, characterized in that: An annular seat is fixedly connected to the outer side position at the top of the cylindrical filter paper (6). An annular gasket is fixedly connected to the top of the annular seat. The top of the annular gasket penetrates into the inner side position at the bottom of the inner top ring plate (8) and contacts the inner top ring plate (8).

4. A lubricating oil filter according to claim 1, characterized in that: Sealing rings one (11) are fixedly connected to both sides of the top of the inner container (4) corresponding to the annular clamping groove (9). The top of the sealing ring one (11) contacts the bottom of the inner top ring plate (8).

5. A lubricating oil filter according to claim 1, characterized in that: Pulling rods (24) are fixedly connected to the opposite sides of the two activity blocks (17). The side of the pulling rod (24) away from the activity block (17) penetrates outside the outer plate (15) and is fixedly connected to a pulling plate (26).

6. The lubricating oil filter according to claim 5, characterized in that: A return spring (25) is sleeved on the outer side of the pulling rod (24). The two sides of the return spring (25) are respectively fixedly connected to the activity block (17) and the inner wall of the activity groove (16).

7. The lubricating oil filter according to claim 1, wherein: On the top of the outside of the housing (1), an external ring plate one (19) is fixedly connected. On the bottom of the outside of the cover plate (2), an external ring plate two (20) is fixedly connected. At the center of the top of the external ring plate one (19), an annular clamping strip two (21) is fixedly connected. The top of the annular clamping strip two (21) penetrates into the inside of the external ring plate two (20) and is clamped with the inside of the external ring plate two (20). On both sides of the annular clamping strip two (21) corresponding to the top of the external ring plate one (19), a sealing ring two (22) is fixedly connected. The top of the sealing ring two (22) contacts the bottom of the external ring plate two (20). A fixing bolt (23) is threadedly connected to the top of the external ring plate two (20). The bottom of the fixing bolt (23) penetrates into the inside of the annular clamping strip two (21) and is threadedly connected to the annular clamping strip two (21).

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