Filter for lubricating oil system

By designing a filter for lubricating oil system with multi-layer filter material and filter mesh structure, the problems of short contact time and insufficient contact area in existing filters are solved, efficient impurity removal effect is achieved, and production costs and filter size are reduced.

CN222969397UActive Publication Date: 2025-06-13WUXI BOIT SCI-TECH CO LTD
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Patent Information

Application Number
CN202421900294.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-07
Publication Date
2025-06-13
Estimated Expiration
2034-08-07

AI Technical Summary

Technical Problem

In the existing lubricant system filters, the contact time between the lubricant and the filter material and the filter mesh is short and the contact area is insufficient, resulting in poor filtration effect, large overall size of the filter, high production cost and long time for removing impurities.

Method used

A new type of filter for lubricating oil system was designed, adopting a multi-layer filter material and filter mesh structure, including internal filter material, bottom filter mesh, horizontal filter mesh, medium filter mesh and external filter mesh. Through these filter materials and filter mesh, it contacts the lubricating oil in large areas, extends the contact time and increases the contact area, and ensures efficient filtering and removal of impurities.

Benefits of technology

The lubricating oil is achieved with a large area and long-term contact between multiple sets of filter materials and filter mesh, which significantly improves the impurity filter removal effect, reduces the overall size and production cost of the filter mesh, and is conveniently disassembled and separated, which facilitates the cleaning or replacement of filter materials and filter mesh.

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Abstract

The filter for the lubricating oil system comprises a filter shell, a cover plate is installed on the top of the filter shell, the edge of the bottom end of a middle cylinder is fixedly connected with the top end of a bottom filter cylinder, and the bottom end of the bottom filter cylinder is fixedly connected with the bottom face of the inner side of the filter shell. A horizontal filter screen is fixedly mounted at the top between the outer wall of the middle cylinder and the inner wall of the outer cylinder, the bottom end of the outer cylinder is fixedly connected with the bottom surface of the inner side of the filter shell, a middle filter material is arranged between the outer wall of the middle cylinder below the horizontal filter screen and the inner wall of the outer cylinder, and an outer filter material is arranged between the outer wall of the outer cylinder and the inner wall of the filter shell; an oil outlet pipe is mounted at the bottom of one end of the filter shell. According to the filter for the lubricating oil system, the novel structural design is adopted, lubricating oil is in large-area and long-time contact with a plurality of groups of filter materials and filter screens in the filter which is integrally smaller, the impurity filtering effect is ensured, meanwhile, the filter materials and the filter screens can be conveniently detached and separated, and the filter materials and the filter screens can be cleaned or replaced.
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Description

Technical Field

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

[0002] The filter of the lubricating oil system plays a crucial role in mechanical equipment. It is mainly used to remove impurities in the lubricating oil, ensure the purity of the lubricating oil, thereby protecting the mechanical equipment from damage and extending its service life.

[0003] Although the existing filter mechanism built in the filter of the lubricating oil system can filter out impurities in the lubricating oil, the structural design of the filter mechanism is unreasonable. The contact time between the lubricating oil and the filter material and the filter screen is short, and the contact area is insufficient. In order to ensure the filtering effect, the overall size of the filter is large, or it needs to be filtered cyclically, resulting in high production costs and long impurity removal time. Therefore, it is necessary to design a filter for a lubricating oil system for the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a filter for a lubricating oil system, so as to solve the problems in the existing filter that the contact time between the lubricating oil and the filter material and the filter screen is short, the contact area is insufficient, in order to ensure the filtering effect, the overall size of the filter is large, or it needs to be filtered cyclically, resulting in high production costs and long impurity removal time mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A filter for a lubricating oil system, including a filter housing, a cover plate is installed on the top of the filter housing, an oil inlet pipe is fixedly penetrated through the center of the cover plate, an oil pump is installed on the oil inlet pipe, a top seat is fixedly installed in the middle of the bottom surface of the cover plate, the inner wall of the top seat is connected to the top of the middle cylinder, an inner filter material is arranged in the middle cylinder, a bottom filter screen is fixedly installed at the center of the bottom of the middle cylinder, the bottom edge of the middle cylinder is fixedly connected to the top of the bottom filter cylinder, the bottom end of the bottom filter cylinder is fixedly connected to the inner bottom surface of the filter housing, a horizontal filter screen is fixedly installed at the top between the outer wall of the middle cylinder and the inner wall of the outer cylinder, the bottom end of the outer cylinder is fixedly connected to the inner bottom surface of the filter housing, a middle filter material is arranged between the outer wall of the middle cylinder and the inner wall of the outer cylinder below the horizontal filter screen, an outer filter material is arranged between the outer wall of the outer cylinder and the inner wall of the filter housing, and an oil outlet pipe is installed at the bottom of one end of the filter housing.

[0006] Preferably, the top of the middle cylinder is threadedly connected to the inner wall of the top seat, and the diameter of the middle cylinder is greater than 1 / 3 of the inner diameter of the filter housing.

[0007] Preferably, a sealing ring is fixedly installed at the top of the outer wall of the middle cylinder, and the top surface of the sealing ring is closely attached to the bottom surface of the top seat.

[0008] Preferably, the overall height of the inner filter material is greater than half of the overall height of the filter housing, and the filling density of the inner filter material is not less than that of the middle filter material.

[0009] Preferably, the diameter of the bottom filter screen is greater than half of the inner diameter of the middle cylinder, and the distance between the bottom end of the bottom filter screen and the inner bottom surface of the filter housing is greater than 5 times the thickness of the bottom filter screen.

[0010] Preferably, the distance between the outer wall of the bottom filter cylinder and the inner wall of the outer cylinder is greater than 3 times the thickness of the bottom filter cylinder, and the top end of the outer cylinder is higher than the horizontal plane where the center of the filter housing is located.

[0011] Preferably, the horizontal filter screens are distributed at equal intervals horizontally, and the top view shape of the horizontal filter screens is annular.

[0012] Preferably, the overall height of the outer filter material is greater than half of the overall height of the filter housing, and the thickness of the front view section of the outer filter material is greater than that of the front view section of the middle filter material.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The filter for the lubricating oil system adopts a novel structural design. In a filter with a relatively small overall size, it enables the lubricating oil to come into contact with multiple groups of filter materials and filter screens over a large area and for a long time, ensuring the impurity filtering effect. At the same time, it can be conveniently disassembled and separated to clean or replace the filter materials and filter screens.

[0014] 1. By successively contacting the lubricating oil with the inner filter material, the bottom filter screen, the bottom filter cylinder, the horizontal filter screens, the middle filter material, and the outer filter material over a large area, the impurities in the lubricating oil are filtered out, and the contact duration is sufficient to ensure the filtering effect of the impurities in the lubricating oil.

[0015] 2. After removing the bolts connecting the cover plate to the top of the filter housing, rotate the cover plate to drive the top seat to separate from the middle cylinder, exposing the top opening of the middle cylinder, the horizontal filter screens, and the outer filter material, which is convenient for cleaning or replacing the inner filter material and the outer filter material. At the same time, it is also convenient for cleaning the bottom filter screen, the bottom filter cylinder, the horizontal filter screens, and the middle filter material, ensuring the overall filtering effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structural schematic diagram of the present utility model;

[0017] Figure 2 is the front view sectional structural schematic diagram of the present utility model;

[0018] Figure 3 is the upward view sectional structural schematic diagram of the top seat of the present utility model;

[0019] Figure 4 is the top view sectional structural schematic diagram of the horizontal filter screen of the present utility model;

[0020] Figure 5 This is a schematic top-down sectional view of the bottom filter cartridge of the present utility model.

[0021] In the figure: 1. Filter housing; 2. Cover plate; 3. Inlet oil pipe; 4. Oil pump; 5. Top seat; 6. Middle cylinder; 7. Sealing ring; 8. Inner filter material; 9. Bottom filter screen; 10. Bottom filter cartridge; 11. Horizontal filter screen; 12. Outer cylinder; 13. Middle filter material; 14. Outer filter material; 15. Outlet oil pipe. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution: a filter for a lubricating oil system, including a filter housing 1, a cover plate 2, an inlet oil pipe 3, an oil pump 4, a top seat 5, a middle cylinder 6, a sealing ring 7, an inner filter material 8, a bottom filter screen 9, a bottom filter cartridge 10, a horizontal filter screen 11, an outer cylinder 12, a middle filter material 13, an outer filter material 14 and an outlet oil pipe 15. A cover plate 2 is installed on the top of the filter housing 1, an inlet oil pipe 3 is fixedly penetrated through the center of the cover plate 2, an oil pump 4 is installed on the inlet oil pipe 3, the middle part of the bottom surface of the cover plate 2 is fixedly provided with a top seat 5, the inner wall of the top seat 5 is connected to the top of the middle cylinder 6, an inner filter material 8 is arranged in the middle cylinder 6, the center of the bottom of the middle cylinder 6 is fixedly installed with a bottom filter screen 9, the bottom end edge of the middle cylinder 6 is fixedly connected to the top end of the bottom filter cartridge 10, the bottom end of the bottom filter cartridge 10 is connected and fixed to the inner bottom surface of the filter housing 1, the top between the outer wall of the middle cylinder 6 and the inner wall of the outer cylinder 12 is fixedly installed with a horizontal filter screen 11, the bottom end of the outer cylinder 12 is connected and fixed to the inner bottom surface of the filter housing 1, a middle filter material 13 is arranged between the outer wall of the middle cylinder 6 and the inner wall of the outer cylinder 12 below the horizontal filter screen 11, an outer filter material 14 is arranged between the outer wall of the outer cylinder 12 and the inner wall of the filter housing 1, and an outlet oil pipe 15 is installed at the bottom of one end of the filter housing 1.

[0024] In this example, the top of the middle cylinder 6 is threadedly connected to the inner wall of the top seat 5, and the diameter of the middle cylinder 6 is greater than 1 / 3 of the inner diameter of the filter housing 1. The above structural design enables the middle cylinder 6 and the top seat 5 to be stably connected and conveniently disassembled and separated, and ensures that the amount of the inner filter material 8 in the middle cylinder 6 is sufficient.

[0025] A sealing ring 7 is fixedly installed at the top of the outer wall of the middle cylinder 6, and the top surface of the sealing ring 7 is closely attached to the bottom surface of the top seat 5. The above structural design can prevent the lubricating oil from leaking at the connection between the top seat 5 and the middle cylinder 6.

[0026] The overall height of the inner filter material 8 is greater than half of the overall height of the filter housing 1, and the packing density of the inner filter material 8 is not less than that of the middle filter material 13. The above structural design ensures that the lubricating oil can be in contact with the inner filter material 8 and the middle filter material 13 for a long time.

[0027] The diameter of the bottom filter screen 9 is greater than half of the inner diameter of the middle cylinder 6, and the distance between the bottom end of the bottom filter screen 9 and the inner bottom surface of the filter housing 1 is greater than 5 times the thickness of the bottom filter screen 9. The above structural design ensures that the lubricating oil can smoothly drain from the bottom of the middle cylinder 6 and flow around to contact the bottom filter cylinder 10.

[0028] The distance between the outer wall of the bottom filter cylinder 10 and the inner wall of the outer cylinder 12 is greater than 3 times the thickness of the bottom filter cylinder 10, and the top end of the outer cylinder 12 is higher than the horizontal plane where the center of the filter housing 1 is located. The above structural design ensures that the lubricating oil can smoothly move upward in the middle filter material 13 between the outer wall of the bottom filter cylinder 10 and the inner wall of the outer cylinder 12, and ensures that the total installation amount of the middle filter material 13 and the outer filter material 14 is sufficient.

[0029] The horizontal filter screens 11 are distributed at equal intervals horizontally, and the top view shape of the horizontal filter screens 11 is annular. The above structural design enables the lubricating oil to come into contact with the horizontal filter screens 11 over a large area multiple times, ensuring the filtering effect of the horizontal filter screens 11 on the lubricating oil.

[0030] The overall height of the outer filter material 14 is greater than half of the overall height of the filter housing 1, and the thickness of the front view section of the outer filter material 14 is greater than that of the front view section of the middle filter material 13. The above structural design ensures that the lubricating oil can come into contact with the outer filter material 14 over a large area, ensuring the filtering effect on impurities.

[0031] Working principle: When working, start the oil pump 4, pump the lubricating oil in the lubricating oil system into the middle cylinder 6 through the oil inlet pipe 3. The lubricating oil moves downward in the inner filter material 8 in the middle cylinder 6 and passes through the bottom filter screen 9 to enter the inside of the bottom filter cylinder 10. Under the action of the oil pressure continuously pumped into the lubricating oil by the oil pump 4, the lubricating oil passes from the inside to the outside through the bottom filter cylinder 10 to contact the middle filter material 13, and moves upward in the middle filter material 13 between the outside of the middle cylinder 6 and the inside of the outer cylinder 12;

[0032] The lubricating oil moves upward to contact the horizontal filter screens 11, then reaches the top of the outer cylinder 12, overflows from the top end of the outer cylinder 12, flows to the outside of the outer cylinder 12 to contact the outer filter material 14, moves downward in the outer filter material 14 to the bottom end, and is discharged through the oil outlet pipe 15 to complete impurity removal;

[0033] After the device has been used for a period of time, the oil pump 4 can be turned off, and the bolts and nuts connecting the filter housing 1 and the edge of the cover plate 2 are removed. The cover plate 2 is rotated, and the cover plate 2 drives the top seat 5 and the middle cylinder 6 to rotate and separate. The cover plate 2 and the top seat 5 are removed, and the inner filter material 8 and the outer filter material 14 are cleaned or replaced. After the inner filter material 8 and the outer filter material 14 are taken out, the bottom filter screen 9, the bottom filter cylinder 10, the horizontal filter screen 11 and the middle filter material 13 are cleaned. Subsequently, the cover plate 2 is installed and reset to ensure the overall filtering and impurity removal effect of the device. This is the working principle of the filter for the lubricating oil system.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand 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 filter for a lubricating oil system, comprising a filter housing (1), characterized in that: A cover plate (2) is installed on the top of the filter housing (1), an oil inlet pipe (3) is fixedly passed through the center of the cover plate (2), an oil pump (4) is installed on the oil inlet pipe (3), a top seat (5) is fixedly provided in the middle of the bottom surface of the cover plate (2), an inner wall of the top seat (5) is connected to the top of the middle cylinder (6), an inner filter material (8) is arranged in the middle cylinder (6), a bottom filter screen (9) is fixedly installed at the bottom center of the middle cylinder (6), the bottom edge of the middle cylinder (6) is connected and fixedly connected to the top of the bottom filter cartridge (10), the bottom end of the bottom filter cartridge (10) is connected to the filter The filter housing (1) is connected and fixed to the inner bottom surface of the filter housing (1); a horizontal filter screen (11) is fixedly installed at the top between the outer wall of the middle cylinder (6) and the inner wall of the outer cylinder (12); the bottom end of the outer cylinder (12) is connected and fixed to the inner bottom surface of the filter housing (1); a middle filter material (13) is arranged between the outer wall of the middle cylinder (6) and the inner wall of the outer cylinder (12) below the horizontal filter screen (11); an outer filter material (14) is arranged between the outer wall of the outer cylinder (12) and the inner wall of the filter housing (1); and an oil outlet pipe (15) is installed at the bottom of one end of the filter housing (1).

2. A filter for a lubricating oil system according to claim 1, characterized in that: The top of the middle cylinder (6) is threadedly connected to the inner wall of the top seat (5), and the diameter of the middle cylinder (6) is greater than 1 / 3 of the inner diameter of the filter housing (1).

3. A filter for a lubricating oil system according to claim 1, characterized in that: A sealing ring (7) is fixedly mounted on the top of the outer wall of the middle cylinder (6), and the top surface of the sealing ring (7) is tightly fitted with the bottom surface of the top seat (5).

4. A filter for a lubricating oil system according to claim 1, characterized in that: The overall height of the inner filter material (8) is greater than half the overall height of the filter housing (1), and the packing density of the inner filter material (8) is not less than the packing density of the middle filter material (13).

5. A filter for a lubricating oil system according to claim 1, characterized in that: The diameter of the bottom filter (9) is greater than half the inner diameter of the middle cylinder (6), and the distance between the bottom end of the bottom filter (9) and the inner bottom surface of the filter housing (1) is greater than 5 times the thickness of the bottom filter (9).

6. A filter for a lubricating oil system according to claim 1, characterized in that: The distance between the outer wall of the bottom filter cartridge (10) and the inner wall of the outer cartridge (12) is greater than three times the thickness of the bottom filter cartridge (10), and the top of the outer cartridge (12) is higher than the horizontal plane where the center of the filter housing (1) is located.

7. A filter for a lubricating oil system according to claim 1, characterized in that: The horizontal filter screens (11) are horizontally evenly spaced and have a ring-shaped top view.

8. A filter for a lubricating oil system according to claim 1, characterized in that: The overall height of the outer filter material (14) is greater than half the overall height of the filter housing (1), and the thickness of the outer filter material (14) in a front view cross section is greater than the thickness of the middle filter material (13) in a front view cross section.