Air compressor oil filter

Abstract

This utility model discloses an oil filter for an air compressor, relating to the field of air compressor technology. It includes an outer cylinder with an open top; a cover movably connected to the top opening of the outer cylinder; a filter element body disposed inside the outer cylinder; an inlet pipe penetrating the cover; an outlet pipe disposed on the bottom outer wall of the outer cylinder; and a filter pressure plate assembly disposed at the top of the outer cylinder. The filter pressure plate assembly includes a frustum-shaped corrugated tube disposed on the bottom surface of the outer cylinder, located within the filter element body. A filter pressure plate is disposed at the small-diameter end of the frustum-shaped corrugated tube, and an adjusting rod is disposed on the top surface of the filter pressure plate. The end of the inlet pipe furthest from the cover penetrates the filter pressure plate into the frustum-shaped corrugated tube. This utility model has advantages such as improved filtration efficiency and avoidance of replacing the entire oil filter element.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically to an air compressor oil filter. Background Technology

[0002] The oil filter in an air compressor is responsible for filtering the lubricating oil during circulation. Therefore, after prolonged use, the oil filter element often becomes clogged, affecting its normal filtration function. The amount of impurities in the lubricating oil determines the lifespan of the oil filter element. To ensure the function of the oil filter element, the entire element is often replaced, resulting in unnecessary waste. Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide an air compressor oil filter that offers advantages such as improved filtration efficiency and avoidance of replacing the entire oil filter element.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides an air compressor oil filter, comprising:

[0005] The outer cylinder has an open top.

[0006] The cover is movably connected to the top opening of the outer cylinder.

[0007] The filter element body is located inside the outer cylinder.

[0008] The inlet pipe penetrates the cover.

[0009] The outlet pipe is located on the bottom outer wall of the outer cylinder.

[0010] The filter plate assembly is located at the top of the outer cylinder.

[0011] The filter plate assembly includes a frustum-shaped corrugated tube disposed on the bottom surface of the outer cylinder. The frustum-shaped corrugated tube is located inside the filter element body. A filter plate is disposed at the small diameter end of the frustum-shaped corrugated tube. An adjusting rod is disposed on the top surface of the filter plate. The end of the inlet pipe away from the cover passes through the filter plate and into the frustum-shaped corrugated tube.

[0012] Preferably, the cover has multiple fixing bolts evenly distributed along its circumference. The fixing bolts movably pass through the top opening of the cover and connect to the outer cylinder, facilitating the installation and disassembly of the cover.

[0013] Preferably, the filter element body comprises:

[0014] First filter cartridge body;

[0015] Second filter cartridge body;

[0016] The third filter element body, the first filter element body, the second filter element body and the third filter element body are nested from the inside to the outside, and the outer cylinder body, the first filter element body, the second filter element body and the third filter element body are coaxial. The outlet pipe passes through the bottom outer wall of the outer cylinder body, the second filter element body and the third filter element body in sequence to the first filter element body, so as to facilitate the sequential filtration of lubricating oil in the air compressor to remove particulate impurities of different diameters.

[0017] Preferably, the inner wall of the first filter element cylinder is provided with a plurality of sliding grooves, and the outer peripheral wall of the filter pressure plate is provided with a plurality of sliders corresponding to the sliding grooves. The sliders are respectively slidably disposed in the sliding grooves at corresponding positions, which facilitates the filter pressure plate to move in the first filter element cylinder towards the bottom surface of the outer cylinder, thereby compressing the frustum-shaped corrugated tube and helping to concentrate the particulate impurities filtered out in the frustum-shaped corrugated tube.

[0018] Preferably, the distance from the end of the chute near the bottom surface of the outer cylinder to the bottom surface of the outer cylinder is greater than the height of the truncated cone-shaped corrugated tube after compression, which facilitates the filter plate to move towards the bottom surface of the outer cylinder within the first filter element cylinder, thereby compressing the truncated cone-shaped corrugated tube.

[0019] Preferably, the adjusting rod includes:

[0020] Internally threaded tube, which is installed on the top surface of the filter plate;

[0021] The external threaded rod has one end threadedly connected to the internal threaded tube at the end furthest from the cover. The other end of the external threaded rod abuts against the bottom surface of the cover, which facilitates the movement of the internal threaded tube and the filter plate towards the bottom surface of the outer cylinder by the external threaded rod.

[0022] Preferably, a connecting bolt is movably provided on the top surface of the cover, and an internal threaded hole adapted to the connecting bolt is provided at the end of the external threaded rod away from the internal threaded tube. The connecting bolt movably passes through the top surface of the cover and is threadedly connected to the internal threaded hole. When it is not necessary to move the filter plate in the first filter element cylinder towards the bottom surface of the outer cylinder, the external threaded rod can pass through the top surface of the cover and be threadedly connected to the internal threaded hole.

[0023] Preferably, the frustum-shaped corrugated tube is located inside the first filter element cylinder, and the large-diameter end of the frustum-shaped corrugated tube is fixedly disposed on the bottom surface of the outer cylinder. The filter pressure plate is fixedly disposed on the small-diameter end of the frustum-shaped corrugated tube, which facilitates the movement of the filter pressure plate in the first filter element cylinder towards the bottom surface of the outer cylinder, thereby compressing the frustum-shaped corrugated tube and helping to concentrate the particulate impurities filtered out inside the frustum-shaped corrugated tube.

[0024] Preferably, the mesh count of the first filter element cylinder, the second filter element cylinder, and the third filter element cylinder increases sequentially. The frustum-shaped corrugated pipe has a filter mesh structure, and the mesh count of the frustum-shaped corrugated pipe is the same as that of the first filter element cylinder. When using the frustum-shaped corrugated pipe, the lubricating oil in the air compressor can be filtered first, and then filtered sequentially through the first filter element cylinder, the second filter element cylinder, and the third filter element cylinder, which helps to improve the filtration effect.

[0025] Preferably, a sealing ring is provided circumferentially on the top opening of the outer cylinder, which helps to improve the sealing performance after the connection between the cover and the outer cylinder.

[0026] The beneficial effects of this utility model are as follows: 1. By setting a compressible frustum-shaped corrugated tube in the filter element body, the lubricating oil in the air compressor can be filtered through the frustum-shaped corrugated tube when using this air compressor oil filter. After a period of use, the frustum-shaped corrugated tube can be compressed, so that the particulate impurities filtered out by the frustum-shaped corrugated tube are isolated, and the filter element body can continue to be used for filtration, avoiding the drawback of replacing the entire air compressor oil filter.

[0027] 2. The filter element body includes a first filter element cylinder, a second filter element cylinder, and a third filter element cylinder, which facilitates sequential filtration of the lubricating oil in the air compressor and helps improve the filtration effect of the lubricating oil. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of an air compressor oil filter provided in an embodiment of the present utility model.

[0030] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0031] Figure 3 This is a schematic diagram of the adjusting rod structure of an air compressor oil filter provided in an embodiment of the present utility model.

[0032] Figure 4 This is a schematic diagram showing the position of the filter element body of an air compressor oil filter according to an embodiment of the present utility model.

[0033] Figure 5 This is a schematic diagram of the groove position of an air compressor oil filter provided for an embodiment of the present utility model.

[0034] Figure 6 This is a schematic diagram showing the location of the internal threaded hole in an air compressor oil filter, provided for an embodiment of this utility model.

[0035] Figure 7 This is a schematic diagram of a frustum-shaped corrugated pipe structure for an air compressor oil filter, provided for an embodiment of this utility model.

[0036] Explanation of reference numerals in the attached drawings: 1. Outer cylinder; 11. Inlet pipe; 12. Outlet pipe; 2. Cover; 21. Connecting bolt; 211. Internal threaded hole; 22. Fixing bolt; 3. Filter element body; 31. First filter element cylinder; 311. Slide groove; 312. Sliding block; 32. Second filter element cylinder; 33. Third filter element cylinder; 4. Filter pressure plate assembly; 41. Frustum-shaped corrugated pipe; 42. Filter pressure plate; 43. Adjusting rod; 431. Internal threaded pipe; 432. External threaded rod. Detailed Implementation

[0037] 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.

[0038] Example 1

[0039] like Figure 1 , Figures 3 to 7 As shown, this utility model provides an air compressor oil filter, including an outer cylinder 1 with an open top; a cover 2 movably connected to the top opening of the outer cylinder 1; a filter element body 3 disposed inside the outer cylinder 1; an inlet pipe 11 penetrating the cover 2; an outlet pipe 12 disposed on the bottom outer wall of the outer cylinder 1; and a filter pressure plate assembly 4 disposed at the top inside the outer cylinder 1. The filter pressure plate assembly 4 includes a frustum-shaped corrugated pipe 41 disposed on the bottom surface inside the outer cylinder 1. The frustum-shaped corrugated pipe 41 is located inside the filter element body 3. A filter pressure plate 42 is disposed at the small diameter end of the frustum-shaped corrugated pipe 41. An adjusting rod 43 is disposed on the top surface of the filter pressure plate 42. The end of the inlet pipe 11 away from the cover 2 penetrates the filter pressure plate 42 into the frustum-shaped corrugated pipe 41.

[0040] The lubricating oil in the air compressor enters the frustum-shaped bellows 41 through the inlet pipe 11. After being filtered by the frustum-shaped bellows 41, it is then filtered by the filter element body 3 and finally discharged through the outlet pipe 12. After a period of use, the filter pressure plate 42 can be moved closer to the inner bottom surface of the outer cylinder 1 by the adjusting rod 43. At the same time, the frustum-shaped bellows 41 is compressed, which isolates the particulate impurities filtered out by the frustum-shaped bellows 41. That is, when the frustum-shaped bellows 41 is compressed and deformed, the end of the inlet pipe 11 that passes through the filter pressure plate 42 into the frustum-shaped bellows 41 can be separated from the filter pressure plate 42. The lubricating oil in the air compressor enters directly into the filter element body 3 through the inlet pipe 11, is filtered by the filter element body 3, and is discharged through the outlet pipe 12 (at this time, the particulate impurities filtered out by the frustum-shaped bellows 41 are isolated, which helps to reduce the impurity content in the lubricating oil).

[0041] Example 2

[0042] Based on Example 1, such as Figures 1 to 3 As shown, multiple fixing bolts 22 are evenly distributed along the circumference of the cover 2. The fixing bolts 22 movably pass through the cover 2 and connect to the top opening of the outer cylinder 1. The filter element body 3 includes: a first filter element cylinder 31; a second filter element cylinder 32; and a third filter element cylinder 33. The first filter element cylinder 31, the second filter element cylinder 32, and the third filter element cylinder 33 are sequentially nested from the inside to the outside, and the outer cylinder 1, the first filter element cylinder 31, the second filter element cylinder 32, and the third filter element cylinder 33 are coaxial. The outlet pipe 12 sequentially passes through the bottom outer wall of the outer cylinder 1 and the second filter element cylinder 33. The cylinder 32 and the third filter element cylinder 33 are inserted into the first filter element cylinder 31; the inner wall of the first filter element cylinder 31 is provided with multiple sliding grooves 311, and the outer peripheral wall of the filter pressure plate 42 is provided with multiple sliders 312 corresponding to the sliding grooves 311 one by one. The sliders 312 are slidably disposed in the corresponding sliding grooves 311; the frustum-shaped corrugated tube 41 is located inside the first filter element cylinder 31, and the large diameter end of the frustum-shaped corrugated tube 41 is fixedly disposed on the bottom surface inside the outer cylinder 1, and the filter pressure plate 42 is fixedly disposed on the small diameter end of the frustum-shaped corrugated tube 41.

[0043] The cover 2 can be connected to the top opening of the outer cylinder 1 by fixing bolts 22. It is also convenient to remove the cover 2 from the outer cylinder 1, so that the condition of the lubricating oil in the outer cylinder 1 can be observed, so as to replace the oil filter of the air compressor.

[0044] The lubricating oil in the air compressor is filtered through the frustum-shaped bellows 41 and then enters the filter element body 3 for filtration (that is, the lubricating oil is filtered through the first filter element cylinder 31, the second filter element cylinder 32 and the third filter element cylinder 33 in sequence, which can filter out particulate impurities of different diameters in the lubricating oil in sequence).

[0045] After the frustum-shaped corrugated tube 41 has been used for filtration for a period of time, the adjusting rod 43 can be used to push the filter pressure plate 42 towards the inner bottom surface of the outer cylinder 1. At this time, the slider 312 moves towards the bottom surface of the outer cylinder 1 in the corresponding groove 311, which can compress the frustum-shaped corrugated tube 41. The distance from the end of the groove 311 near the bottom surface of the outer cylinder 1 to the bottom surface of the outer cylinder 1 is greater than the height of the frustum-shaped corrugated tube 41 after compression. This ensures that when the slider 312 moves to the end of the groove 311 near the bottom surface of the outer cylinder 1, the frustum-shaped corrugated tube 41 will not be compressed and damaged (i.e., the frustum-shaped corrugated tube 41 will not exceed the compression limit, thus preventing the leakage of particulate impurities filtered in the frustum-shaped corrugated tube 41).

[0046] The mesh counts of the first filter element cylinder 31, the second filter element cylinder 32, and the third filter element cylinder 33 increase sequentially. The frustum-shaped bellows 41 has a filter mesh structure, and the mesh count of the frustum-shaped bellows 41 is the same as that of the first filter element cylinder 31. When using the frustum-shaped bellows 41, the lubricating oil in the air compressor can be filtered first, and then filtered sequentially through the first filter element cylinder 31, the second filter element cylinder 32, and the third filter element cylinder 33. This helps to improve the filtration effect and reduce the content of impurities in the lubricating oil.

[0047] Example 3

[0048] Based on Example 1, such as Figures 2 to 3 , Figures 5 to 7 As shown, the adjusting rod 43 includes an internally threaded tube 431, which is disposed on the top surface of the filter plate 42; the end of the externally threaded rod 432 away from the cover 2 is threadedly connected to the internally threaded tube 431, and the end of the externally threaded rod 432 away from the internally threaded tube 431 abuts against the bottom surface of the cover 2.

[0049] A connecting bolt 21 is movably provided on the top surface of the cover 2. The end of the external threaded rod 432 away from the internal threaded tube 431 is provided with an internal threaded hole 211 that matches the connecting bolt 21. The connecting bolt 21 movably passes through the top surface of the cover 2 and is threadedly connected to the internal threaded hole 211.

[0050] After using the frustum-shaped corrugated tube 41 for filtration for a period of time, first loosen the connecting bolt 21, then remove the cover 2, rotate the external threaded rod 432 inside the internal threaded tube 431, and rotate the external threaded rod 432 out of the internal threaded tube 431 (at this time, the length of the external threaded rod 432 and the internal threaded tube 431 becomes longer). By pushing the external threaded rod 432 and the internal threaded tube 431, the filter pressure plate 42 can be moved, thereby compressing the frustum-shaped corrugated tube 41. After the frustum-shaped corrugated tube 41 is compressed, the cover 2 is installed, so that the bottom surface of the cover 2 abuts against the end of the external threaded rod 432 away from the internal threaded tube 431, which helps to maintain the stability of the frustum-shaped corrugated tube 41. At the same time, the frustum-shaped corrugated tube 41 will not interfere with the use of the first filter element cylinder 31, the second filter element cylinder 32 and the third filter element cylinder 33.

[0051] Example 4

[0052] Based on Example 1, such as Figure 3 As shown, a sealing ring is provided circumferentially along the top opening of the outer cylinder 1; this is beneficial to improving the sealing performance between the cover 2 and the outer cylinder 1 after connection. That is, when the cover 2 is connected to the top opening of the outer cylinder 1 by fixing bolt 22, the sealing ring can be squeezed, which is beneficial to improving the sealing performance between the cover 2 and the outer cylinder 1.

[0053] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An air compressor oil filter, characterized in that, include: The outer cylinder (1) has an open top. The cover (2) is movably connected to the top opening of the outer cylinder (1); The filter element body (3) is disposed inside the outer cylinder (1); The inlet pipe (11) penetrates the cover (2); The outlet pipe (12) is installed on the bottom outer wall of the outer cylinder (1); The filter plate assembly (4) is located at the top inside the outer cylinder (1); The filter plate assembly (4) includes a frustum-shaped corrugated pipe (41) disposed on the bottom surface of the inner cylinder (1). The frustum-shaped corrugated pipe (41) is located inside the filter element body (3). A filter plate (42) is disposed at the small diameter end of the frustum-shaped corrugated pipe (41). An adjusting rod (43) is disposed on the top surface of the filter plate (42). The end of the inlet pipe (11) away from the cover (2) passes through the filter plate (42) and into the frustum-shaped corrugated pipe (41).

2. The air compressor oil filter as described in claim 1, characterized in that, Multiple fixing bolts (22) are evenly distributed along the circumference of the cover (2). The fixing bolts (22) movably pass through the cover (2) and connect to the top opening of the outer cylinder (1).

3. An air compressor oil filter as described in claim 1, characterized in that, The filter element body (3) includes: First filter cartridge body (31); Second filter cartridge body (32); The third filter cartridge body (33), the first filter cartridge body (31), the second filter cartridge body (32) and the third filter cartridge body (33) are sequentially nested from the inside to the outside, and the outer cartridge body (1), the first filter cartridge body (31), the second filter cartridge body (32) and the third filter cartridge body (33) are coaxial. The outlet pipe (12) sequentially passes through the bottom outer wall of the outer cartridge body (1), the second filter cartridge body (32) and the third filter cartridge body (33) to the inside of the first filter cartridge body (31).

4. An air compressor oil filter as described in claim 2, characterized in that, The inner wall of the first filter element cylinder (31) is provided with multiple sliding grooves (311), and the outer peripheral wall of the filter plate (42) is provided with multiple sliders (312) that correspond one-to-one with the sliding grooves (311). The sliders (312) are slidably disposed in the corresponding sliding grooves (311).

5. An air compressor oil filter as described in claim 4, characterized in that, The distance from the end of the chute (311) near the bottom of the outer cylinder (1) to the bottom of the outer cylinder (1) is greater than the height of the truncated corrugated pipe (41) after compression.

6. An air compressor oil filter as described in claim 1, characterized in that, The adjusting rod (43) includes: An internally threaded tube (431) is provided on the top surface of the filter plate (42); The external thread rod (432) is threaded at one end away from the cover (2) and connected to the internal thread tube (431). The end of the external thread rod (432) away from the internal thread tube (431) abuts against the bottom surface of the cover (2).

7. An air compressor oil filter as described in claim 6, characterized in that, A connecting bolt (21) is movably provided on the top surface of the cover (2). The end of the external thread rod (432) away from the internal thread tube (431) is provided with an internal thread hole (211) that matches the connecting bolt (21). The connecting bolt (21) movably passes through the top surface of the cover (2) and is threadedly connected to the internal thread hole (211).

8. An air compressor oil filter as described in claim 3, characterized in that, The frustum-shaped corrugated tube (41) is located inside the first filter element cylinder (31), and the large-diameter end of the frustum-shaped corrugated tube (41) is fixedly set on the bottom surface inside the outer cylinder (1), and the filter pressure plate (42) is fixedly set on the small-diameter end of the frustum-shaped corrugated tube (41).

9. An air compressor oil filter as described in claim 3, characterized in that, The mesh count of the first filter element cylinder (31), the second filter element cylinder (32), and the third filter element cylinder (33) increases sequentially. The frustum-shaped corrugated tube (41) has a filter mesh structure, and the mesh count of the frustum-shaped corrugated tube (41) is the same as that of the first filter element cylinder (31).

10. An air compressor oil filter as described in claim 1, characterized in that, A sealing ring is provided circumferentially along the top opening of the outer cylinder (1).

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