Oil filter with filter element convenient to replace

Abstract

The utility model discloses an oil filter convenient to replace a filter element, which comprises a shell, an upper end cover is fixed at the top of the shell, a lower end cover is arranged below the shell, and a filter element assembly and a metal filter cartridge are respectively arranged in the shell; the top of the filter element assembly and the top of the metal filter cylinder are connected with a baffle, an oil outlet is formed in the middle of the interior of the baffle, and oil inlets are formed in the baffle at equal angles relative to the center point of the oil outlet. According to the engine oil filter with the filter element convenient to replace, only by rotating the driving gear ring, the movable block rotates and does not extrude the positioning block any more, at the moment, the positioning block resets under the elastic force of the first spring, fixation on the lower end cover is relieved, then the lower end cover is pulled downwards, and the filter element assembly in the engine oil filter can be detached and replaced; therefore, the filter element assembly is convenient to replace, the whole filter shell does not need to be replaced, replacement is convenient, the use cost can be reduced, and meanwhile the filter is more environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the field of oil filter technology, specifically an oil filter with an easy-to-replace filter element. Background Technology

[0002] An oil filter is a device used to remove impurities such as dust, metal particles, carbon deposits, and soot particles from engine oil. Its main function is to protect the engine from damage caused by impurities. By filtering the oil, it ensures that the oil entering the engine is cleaner, thereby extending the engine's lifespan. However, a drawback is that the oil filter relies primarily on filter paper for filtration. To maximize the contact area between the oil and the filter paper, the filter paper is cylindrical with a certain height. During filtration, large, clay-like impurities adhere to the filter paper, affecting the filtration effect. To address these shortcomings, existing technology (Chinese patent application number: 202220172056.5, authorized announcement date: 2022-06-28) discloses a novel oil filter. By fixing filter paper inside a metal mesh, the oil undergoes initial filtration through the metal mesh followed by fine filtration through the filter paper. This effectively filters the engine oil, and large particles are blocked by the metal mesh, preventing them from adhering to the filter paper. The metal mesh on the outer periphery of the filter paper effectively disperses the engine oil, further preventing the filter paper from being washed away and deformed. The strong force of the engine oil, combined with the helical curved surface of the scraper, causes the scraper to rotate on the metal mesh surface. This rotation scrapes the metal surface, separating colloidal impurities from the metal mesh and preventing any impact on filtration efficiency. The helical curved surface of the scraper also pushes impurities towards the bottom of the housing, where they accumulate, effectively extending the filter's lifespan.

[0003] Existing technology uses a scraper rotating on the surface of a metal filter to separate colloidal impurities from the filter, thus avoiding affecting the filtration effect. However, most existing oil filters require complete disassembly for replacement, which is cumbersome. Furthermore, all the oil inside the filter needs to be drained during replacement, resulting in oil waste and potential environmental pollution. Therefore, we propose an oil filter with an easy-to-replace filter element that effectively solves these problems. Utility Model Content

[0004] The purpose of this utility model is to provide an oil filter that is easy to replace, in order to solve the problems mentioned in the background art. Currently, most existing oil filters on the market require disassembly of the entire filter when replacing them, which is cumbersome. Furthermore, all the oil inside the filter needs to be drained during replacement, resulting in oil waste and potential environmental pollution from the drained oil.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil filter that facilitates filter element replacement, comprising a housing, an upper end cover fixed to the top of the housing, and a lower end cover provided at the bottom of the housing, wherein a filter element assembly and a metal filter cartridge are respectively installed inside the housing; further comprising: a baffle connected to the top of the filter element assembly and the metal filter cartridge, wherein an oil outlet is provided at the middle position inside the baffle, and an oil inlet is provided at an equal angle to the center point of the oil outlet inside the baffle; a connecting ring fixed to the bottom of the housing, and a drive gear ring sleeved on the outer side of the connecting ring; a driven gear rotatably connected at an equal angle to the inside of the connecting ring via a shaft, and a movable block is fixedly sleeved on the outer side of the driven gear shaft end; a positioning block is connected at an equal angle to the inside of the connecting ring near the center, and a first spring is installed between the outer side of the positioning block and the inner wall of the connecting ring.

[0006] Preferably, the filter element assembly is sleeved and installed on the outside of the metal filter cartridge, and the lower end cover and the connecting ring are engaged.

[0007] Preferably, the drive gear ring and the connecting ring are rotatably connected, and the drive gear ring and the multiple driven gears are meshingly connected. The positions of the movable block and the positioning block correspond one-to-one, and the outer side of the movable block is in contact with the end of the positioning block.

[0008] Preferably, the lower end cover has positioning holes at equal angles on its outer side, the positioning block is slidably disposed inside the connecting ring, and the positioning block and the positioning hole are connected by an insertion.

[0009] Preferably, a filter screen is provided between the filter element assembly and the baffle, and a sealing gasket is embedded in the top of the upper cover.

[0010] Preferably, a bracket is fixed to the left side of the connecting ring, and a limiting block is connected through the left side of the bracket. A second spring is installed between the outer side of the limiting block and the inner wall of the bracket, and a limiting groove is formed at an equal angle on the outer side of the drive gear ring.

[0011] Preferably, the limiting block and the bracket are slidably connected, and the positions of the limiting block and the limiting groove correspond to each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are: this oil filter with easy filter element replacement adopts a novel structural design, the specific details of which are as follows:

[0013] (1) When the filter element assembly needs to be replaced, the limit block is pulled to release the limit on the drive gear ring, and the drive gear ring is rotated to drive the meshing driven gears to rotate. At this time, the moving block rotates and no longer squeezes the positioning block, so that the positioning block is reset under the elastic force of the first spring and the fixation of the lower end cover is released. Then, the lower end cover is pulled down to remove the internal filter element assembly. Further, the new filter element assembly is placed inside the upper end cover and the upper end cover is inserted into the connecting ring. Then, the drive gear ring is rotated in the opposite direction to move the multiple positioning blocks and insert them into the positioning holes on the lower end cover, which can fix the lower end cover, thus facilitating the replacement of the filter element assembly without replacing the entire filter housing. This not only facilitates replacement but also reduces the cost of use and is more environmentally friendly.

[0014] (2) After the drive gear ring has rotated, release the limiting block so that it is reset under the elastic force of the second spring and inserted into the corresponding limiting groove. This can limit the drive gear ring and prevent it from deflecting during use.

[0015] (3) By using the sealing gasket, the sealing gasket is squeezed during the assembly of the outer shell and the end cover, filling the gap between the outer shell and the end cover and preventing oil leakage. The filter screen can coarsely filter larger particles of impurities in the oil, thereby preventing larger impurities from entering the filter element, reducing the burden of deep filtration and improving filtration efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the outer shell of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of the lower end cover and the outer shell of this utility model;

[0018] Figure 3 This is a schematic diagram showing the disassembled structure of the filter element assembly, metal filter cartridge, and filter screen of this utility model;

[0019] Figure 4 This is a schematic diagram of the meshing structure of the drive gear ring and four driven gears of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the limiting block and the second spring of this utility model;

[0021] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Outer shell; 2. Upper end cover; 3. Lower end cover; 4. Connecting ring; 5. Sealing gasket; 6. Baffle; 7. Oil inlet; 8. Oil outlet; 9. Filter element assembly; 10. Metal filter cartridge; 11. Filter screen; 12. Drive gear ring; 13. Bracket; 14. Driven gear; 15. Movable block; 16. Positioning block; 17. Limiting groove; 18. First spring; 19. Limiting block; 20. Second spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 The present invention provides the following technical solution: an oil filter with an easy-to-replace filter element;

[0025] Example 1: To address the problems of existing oil filters requiring complete disassembly for replacement, which is cumbersome, and the need to drain all oil during replacement, resulting in oil waste and environmental pollution, the following solution is disclosed. Please refer to the following for details. Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, the device includes a housing 1, with an upper end cover 2 fixed to the top and a lower end cover 3 at the bottom. A filter element assembly 9 and a metal filter cartridge 10 are installed inside the housing 1. It also includes a baffle 6 connected to the top of the filter element assembly 9 and the metal filter cartridge 10. An oil outlet 8 is provided in the middle of the baffle 6, and an oil inlet 7 is provided at equal angles to the center point of the oil outlet 8. A connecting ring 4 is fixed to the bottom of the housing 1. The filter element assembly 9 is sleeved on the outside of the metal filter cartridge 10. The lower end cover 3 and the connecting ring 4 are engaged. A drive gear ring 12 is sleeved on the outside of the connecting ring 4. The connecting ring 4 is rotatably connected at equal angles to a shaft. Driven gear 14, with a movable block 15 fixedly fitted on the outer side of the shaft end of driven gear 14. Positioning blocks 16 are connected at equal angles inside the connecting ring 4 near the center. A first spring 18 is installed between the outer side of the positioning block 16 and the inner wall of the connecting ring 4. The drive gear ring 12 is rotatably connected to the connecting ring 4, and the drive gear ring 12 is meshed with multiple driven gears 14. The positions of the movable block 15 and the positioning block 16 correspond one-to-one, and the outer side of the movable block 15 fits against the end of the positioning block 16. Positioning holes are opened at equal angles on the outer side of the lower end cover 3. The positioning block 16 is slidably disposed inside the connecting ring 4, and the positioning block 16 is inserted into the positioning hole.

[0026] When the filter element assembly 9 needs to be replaced, the operator only needs to pull the limiting block 19 to release the limiting of the drive gear ring 12, and rotate the drive gear ring 12 in the forward direction to drive the meshing driven gears 14 to rotate. At this time, the moving block 15 rotates and no longer squeezes the positioning block 16, so that the positioning block 16 is reset under the elastic force of the first spring 18 and the fixing of the lower end cover 3 is released. Then, pull down the lower end cover 3 to remove the internal filter element assembly 9. Then, put the new filter element assembly 9 into the upper end cover 2 and insert the upper end cover 2 into the connecting ring 4. Then, rotate the drive gear ring 12 in the reverse direction to move the multiple positioning blocks 16 and insert them into the positioning holes on the lower end cover 3, which can fix the lower end cover 3, thus facilitating the replacement of the filter element assembly 9 without replacing the entire filter housing 1. This not only facilitates replacement but also reduces the cost of use and is more environmentally friendly.

[0027] Example 2: Unlike Example 1, this example uses a limiting block 19 inserted into the corresponding limiting groove 17 to limit the drive gear ring 12, preventing deflection during use. See details... Figure 1 , Figure 2 and Figure 5As shown, a bracket 13 is fixed on the left side of the connecting ring 4, and a limiting block 19 is connected through the left side of the inside of the bracket 13. A second spring 20 is installed between the outer side of the limiting block 19 and the inner wall of the bracket 13. A limiting groove 17 is opened at equal angles on the outer side of the drive gear ring 12. The limiting block 19 and the bracket 13 are slidably connected, and the positions of the limiting block 19 and the limiting groove 17 correspond to each other.

[0028] After the drive gear ring 12 has rotated completely, the operator releases the limiting block 19, allowing it to reset under the elastic force of the second spring 20 and be inserted into the corresponding limiting groove 17. This limits the drive gear ring 12 and prevents it from deflecting during use.

[0029] Example 3: Unlike Example 2, this example utilizes the filter screen 11 to coarsely filter larger particles of impurities in the engine oil, improving filtration efficiency. See details... Figures 1-3 As shown, a filter screen 11 is provided between the filter element assembly 9 and the baffle 6, and a sealing gasket 5 is embedded in the top of the upper cover 2.

[0030] By using the sealing gasket 5, when the housing 1 and the end cap are assembled, the sealing gasket 5 is squeezed to fill the gap between the housing 1 and the end cap, preventing oil leakage. Then, when the oil enters through the oil inlet 7, it passes through the filter screen 11, which can coarsely filter larger particles of impurities in the oil, thereby preventing larger impurities from entering the filter element, reducing the burden of deep filtration, and improving filtration efficiency.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oil filter with an easy-to-replace filter element, comprising a housing (1), an upper end cap (2) fixed to the top of the housing (1), and a lower end cap (3) disposed below the housing (1), wherein a filter element assembly (9) and a metal filter cartridge (10) are respectively installed inside the housing (1); characterized in that, Also includes: The top of the filter element assembly (9) and the metal filter cartridge (10) are connected to a baffle (6), and an oil outlet (8) is provided in the middle of the baffle (6). An oil inlet (7) is provided at an equal angle to the center point of the oil outlet (8). A connecting ring (4) is fixed at the bottom of the outer shell (1), and a drive gear ring (12) is sleeved on the outside of the connecting ring (4). A driven gear (14) is connected at an equal angle to the inside of the connecting ring (4) through a shaft rotation. A movable block (15) is sleeved and fixed on the outside of the shaft end of the driven gear (14). A positioning block (16) is connected at an equal angle to the inside of the connecting ring (4) near the center. A first spring (18) is installed between the outside of the positioning block (16) and the inner wall of the connecting ring (4).

2. The oil filter with an easily replaceable filter element according to claim 1, characterized in that: The filter element assembly (9) is sleeved and installed on the outside of the metal filter cartridge (10), and the lower end cap (3) and the connecting ring (4) are connected by a snap-fit ​​connection.

3. An oil filter with an easily replaceable filter element according to claim 1, characterized in that: The drive gear ring (12) and the connecting ring (4) are rotatably connected, and the drive gear ring (12) and the multiple driven gears (14) are meshed. The positions of the movable block (15) and the positioning block (16) correspond one-to-one, and the outer side of the movable block (15) is in contact with the end of the positioning block (16).

4. An oil filter with an easily replaceable filter element according to claim 1, characterized in that: The lower end cover (3) has a positioning hole at an equal angle on its outer side. The positioning block (16) is slidably disposed inside the connecting ring (4), and the positioning block (16) and the positioning hole are connected by an insertion.

5. An oil filter with an easily replaceable filter element according to claim 1, characterized in that: A filter screen (11) is provided between the filter element assembly (9) and the baffle (6), and a sealing gasket (5) is embedded in the top of the upper end cover (2).

6. An oil filter with an easily replaceable filter element according to claim 1, characterized in that: A bracket (13) is fixed on the left side of the connecting ring (4), and a limiting block (19) is connected through the left side of the bracket (13). A second spring (20) is installed between the outer side of the limiting block (19) and the inner wall of the bracket (13). A limiting groove (17) is opened at an equal angle on the outer side of the drive gear ring (12).

7. An oil filter with an easily replaceable filter element according to claim 6, characterized in that: The limiting block (19) and the bracket (13) are slidably connected, and the positions of the limiting block (19) and the limiting groove (17) correspond to each other.

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