An oil strainer for a diesel internal combustion engine

By introducing a power unit into the diesel internal combustion engine to drive a scraper to remove impurities from the filter screen, the problem of clogging caused by the accumulation of impurities in the oil filter of the traditional diesel internal combustion engine is solved, achieving efficient filtration and stable lubrication, extending engine service life and reducing maintenance costs.

CN224282756UActive Publication Date: 2026-05-26卡姆斯勒(江苏)发动机有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
卡姆斯勒(江苏)发动机有限公司
Filing Date
2025-06-27
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Traditional diesel internal combustion engines use static filter screens for their oil filters. Impurities accumulate on the filter screen, causing pore blockage, reducing filtration efficiency, affecting engine performance, and increasing maintenance costs.

Method used

An oil filter with a power component was designed. The diesel flow drives the turbine to rotate, and the scraper removes impurities from the filter screen, keeping the filter screen clear.

Benefits of technology

It effectively prevents filter clogging, maintains high-efficiency filtration performance, reduces wear on engine parts, extends engine life, and reduces maintenance costs.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224282756U_ABST
    Figure CN224282756U_ABST
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Abstract

This utility model discloses an oil filter for a diesel internal combustion engine, relating to the field of oil filter technology. It includes a filter body with a filter pipe fixedly installed on it. A power assembly is located within the filter body, driven by a diesel fuel line. The power assembly includes a conical cylinder with a fixed support rod fixedly installed on it. The fixed support rod is fixedly installed on the inner wall of the filter body. A second bevel gear is rotatably installed inside the conical cylinder. In this invention, by setting a power assembly connected to a rotating turbine driven by diesel flow, a scraper continuously scrapes the filter screen, allowing debris and impurities on the filter screen to be removed promptly, preventing clogging and maintaining good filtration performance. This allows diesel fuel to continuously and efficiently pass through the filter screen into the filter body, greatly improving the filtration efficiency and operational stability of the oil filter.
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Description

Technical Field

[0001] This utility model relates to the field of oil filter technology, and in particular to an oil filter for a diesel internal combustion engine. Background Technology

[0002] In the operating system of a diesel internal combustion engine, engine oil plays an indispensable role in lubrication, cooling, cleaning, and sealing. Its cleanliness directly affects the engine's performance and service life. As modern diesel internal combustion engines develop towards higher power, higher speed, and higher load, the requirements for engine oil cleanliness are becoming increasingly stringent.

[0003] Traditional oil filters typically employ a static filter structure, relying solely on a single filtration layer to intercept impurities in the engine oil. In actual use, metal shavings, carbon deposits, dust, and other impurities from diesel fuel continuously accumulate on the filter. Over time, the filter's pores become clogged, leading to a significant decrease in filtration efficiency. When the filter is severely clogged, the flow of engine oil is significantly reduced, preventing it from reaching all lubrication points in the engine, such as the crankshaft, connecting rods, and camshaft. This forces these components to operate under relatively harsh lubrication conditions, exacerbating friction and wear, which in turn affects engine power output, reduces fuel economy, and in severe cases, can even cause engine failure, resulting in significant economic losses.

[0004] Furthermore, cleaning clogged filters in traditional oil strainers often requires shutdown and complex disassembly, which not only consumes significant time and labor costs but also affects the equipment's normal operating efficiency and increases the company's operating costs. Moreover, frequent disassembly can lead to a decrease in the filter's sealing performance, further impacting its filtration efficiency. In industrial sectors with high requirements for continuous equipment operation, such as power generation and marine transportation, these drawbacks of traditional oil strainers are particularly pronounced, urgently necessitating a new type of oil strainer to address these issues. Utility Model Content

[0005] Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an oil filter for diesel internal combustion engines. It solves the problem that traditional oil filters often employ a static filter screen structure, relying solely on a single filter layer to intercept impurities in the oil. In actual use, metal fragments, carbon deposits, dust, and other impurities contained in the diesel fuel continuously accumulate on the filter screen. With increasing usage time, the pores of the filter screen gradually become clogged, leading to a significant decrease in filtration efficiency.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An oil strainer for a diesel internal combustion engine includes a strainer body with a strainer pipe fixedly installed on it. A power assembly is located within the strainer body and can be driven by a diesel fuel line. The power assembly includes a conical cylinder with a fixed support rod fixedly installed on it. The fixed support rod is fixedly installed on the inner wall of the strainer body. A second bevel gear is rotatably mounted inside the conical cylinder, and a first connecting rod is fixedly installed at the front end of the second bevel gear. The first connecting rod is rotatably mounted through the conical cylinder, and the circumferential surface of the second bevel gear meshes with the first bevel gear.

[0010] Preferably, a second connecting rod is fixedly mounted on the first bevel gear, the second connecting rod is rotatably mounted through the conical cylinder, and a rotating turbine is fixedly mounted on the side end of the second connecting rod.

[0011] Preferably, the front end of the filter body is provided with a filter screen plate, and the front end of the first connecting rod is provided with a scraper plate, which is attached to the front end of the filter screen plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this new invention, a power component connected to a rotating turbine driven by diesel flow is installed to drive a scraper plate to continuously scrape the filter screen. This allows debris and impurities on the filter screen to be removed in a timely manner, preventing the filter screen from clogging and maintaining good filtration performance. As a result, diesel fuel can continuously and efficiently pass through the filter screen into the oil filter body, greatly improving the filtration efficiency and working stability of the oil filter.

[0014] In this new invention, by effectively intercepting the filter screen and automatically cleaning the filter screen with a scraper, debris and impurities in diesel fuel can be effectively blocked outside the engine lubrication system. This prevents these impurities from entering the engine's crankshaft, connecting rods, camshaft, and other lubrication parts, reducing wear between engine components, thereby extending the overall service life of the engine and reducing maintenance costs. Attached Figure Description

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the entire utility model;

[0017] Figure 2 This is a structural diagram of the filter screen plate of this utility model;

[0018] Figure 3 This is a structural diagram of the rotating turbine of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A.

[0020] Legend: 11. Conical cylinder; 12. First bevel gear; 14. Second bevel gear; 15. First connecting rod; 16. Second connecting rod; 17. Scraper; 21. Filter body; 22. Rotating turbine; 23. Fixed support rod; 24. Filter screen; 25. Filter pipe. Detailed Implementation

[0021] This application provides an oil filter for a diesel internal combustion engine, effectively solving the problem that traditional oil filters often employ static filter structures, relying solely on a single filter layer to intercept impurities in the oil. In actual use, metal shavings, carbon deposits, dust, and other impurities contained in the diesel fuel continuously accumulate on the filter screen. With increasing usage time, the pores of the filter screen gradually become clogged, leading to a significant decrease in filtration efficiency. Example

[0022] like Figures 1-4 As shown, the technical solution in this application aims to effectively address the problem that traditional oil filters often employ static filter structures, relying solely on a single filter layer to intercept impurities in the oil. In actual use, metal shavings, carbon deposits, dust, and other impurities contained in diesel fuel continuously accumulate on the filter screen. With increasing usage time, the pores of the filter screen gradually become clogged, leading to a significant decrease in filtration efficiency. The overall approach is as follows:

[0023] In view of the problems existing in the prior art, the present invention provides an oil filter for a diesel internal combustion engine, including a filter body 21 and a filter pipe 25 fixedly installed on the filter body 21. The filter pipe 25 is mainly responsible for stably delivering the treated oil to the subsequent oil pump, providing an oil delivery channel for various lubrication parts of the engine, ensuring that the oil can smoothly enter the engine's lubrication system, and ensuring the normal operation of the engine.

[0024] The filter body 21 is equipped with a power assembly, which can be driven by diesel fuel. This design cleverly utilizes the flow energy of diesel fuel to achieve automated cleaning function inside the filter. The conical cylinder 11 in the power assembly provides a stable support frame for the internal transmission structure, ensuring the relative position stability of each component and enabling the entire power assembly to operate reliably during operation. The fixed support rod 23, which is fixedly installed on the conical cylinder 11, is connected to the conical cylinder 11 at one end and fixed to the inner wall of the filter body 21 at the other end. It plays a role in stabilizing the conical cylinder 11 and ensuring that the conical cylinder 11 can remain stable under the impact force and other external forces generated by the flow of diesel fuel, thereby ensuring the normal operation of the internal transmission structure.

[0025] The second bevel gear 14, which is rotatably installed inside the conical cylinder 11, meshes with the first bevel gear 12. Through the transmission between the gears, the rotational motion of the rotating turbine 22 is converted into the rotation of the first connecting rod 15. The first connecting rod 15, which is fixedly installed at the front end of the second bevel gear 14, is rotatably installed on the conical cylinder 11. It not only achieves synchronous rotation with the second bevel gear 14, but also transmits the rotation to the scraper plate 17 at the front end, providing power for scraping the filter screen plate 24.

[0026] The second connecting rod 16, fixedly mounted on the first bevel gear 12, rotatably extends through the conical cylinder 11, transmitting the rotation of the rotating turbine 22 to the first bevel gear 12. It plays a crucial connecting role in the entire power transmission process. The rotating turbine 22, fixedly mounted on the side end of the second connecting rod 16, rotates under the impact force of the diesel flow, serving as the power source for the entire power assembly. It can sensitively capture the energy of the diesel flow and convert it into mechanical rotation, providing initial power for a series of subsequent transmissions.

[0027] The filter screen 24 installed at the front end of the filter body 21 is the core filter component of the entire filter. It can effectively intercept debris and impurities in diesel fuel, prevent these contaminants from entering the engine's lubrication system, avoid wear of engine parts due to impurities, and extend the engine's service life.

[0028] The scraper 17, located at the front end of the first connecting rod 15, is attached to the front end of the filter screen 24. Driven by the power component, the scraper 17 rotates with the first connecting rod 15, continuously scraping the surface of the filter screen 24. This structural design has significant benefits, as it can promptly remove accumulated debris and impurities from the filter screen, effectively preventing the filter screen 24 from becoming clogged and maintaining its good filtration performance. This allows diesel fuel to continuously and efficiently pass through the filter screen 24 into the oil collector body 21, thereby ensuring that the oil collector is always in a high-efficiency operating state and improving the stability and reliability of the engine oil circulation system.

[0029] Working principle:

[0030] During equipment operation, diesel fuel enters the filter body 21 through the filter screen 24 at the front end of the filter body 21, then flows out through the filter pipe 25, and is then transmitted to the oil pump. The oil pump pressurizes the oil and delivers it precisely to various lubrication parts of the engine, such as the crankshaft, connecting rod, and camshaft, ensuring stable engine operation and good lubrication of components.

[0031] When diesel fuel flows through the filter body 21, the kinetic energy generated by its own flow drives the rotating turbine 22 to rotate. The rotating turbine 22 is fixedly connected to the second connecting rod 16, so the second connecting rod 16 rotates synchronously with the rotating turbine 22. The rotation of the second connecting rod 16 drives the first bevel gear 12 to rotate. The first bevel gear 12 and the second bevel gear 14 mesh with each other. According to the gear transmission principle, the rotation of the first bevel gear 12 causes the second bevel gear 14 to rotate. The front end of the second bevel gear 14 is fixed to the first connecting rod 15, so the first connecting rod 15 rotates along with the second bevel gear. As the wheel 14 rotates, a scraper 17 is installed at the front end of the first connecting rod 15. With the rotation of the first connecting rod 15, the scraper 17 will move in a circular motion against the front surface of the filter screen 24, continuously scraping the filter screen 24. This design cleverly utilizes the power of diesel flow to remove debris and impurities attached to the filter screen in a timely manner, effectively preventing the filter screen 24 from being blocked, ensuring that diesel can continuously and stably pass through the filter screen 24 into the oil collector body 21, ensuring the efficient operation of the oil collector and maintaining the normal working state of the engine oil circulation system.

[0032] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An oil strainer for a diesel internal combustion engine, comprising a strainer body (21), characterized in that: A filter pipe (25) is fixedly installed on the filter body (21), and a power component is provided inside the filter body (21). The power component can be driven by a diesel oil circuit. The power assembly includes a conical cylinder (11), on which a fixed support rod (23) is fixedly installed. The fixed support rod (23) is fixedly installed on the inner wall of the filter body (21). A second bevel gear (14) is rotatably installed inside the conical cylinder (11). A first connecting rod (15) is fixedly installed at the front end of the second bevel gear (14). The first connecting rod (15) is rotatably installed through the conical cylinder (11). The circumferential surface of the second bevel gear (14) meshes with the first bevel gear (12).

2. The oil filter for a diesel internal combustion engine according to claim 1, characterized in that: A second connecting rod (16) is fixedly installed on the first bevel gear (12).

3. The oil filter for a diesel internal combustion engine according to claim 2, characterized in that: The second connecting rod (16) is rotatably mounted on the conical cylinder (11).

4. The oil filter for a diesel internal combustion engine according to claim 3, characterized in that: A rotating turbine (22) is fixedly installed on the side end of the second connecting rod (16).

5. The oil filter for a diesel internal combustion engine according to claim 4, characterized in that: The front end of the filter body (21) is provided with a filter screen plate (24).

6. The oil filter for a diesel internal combustion engine according to claim 5, characterized in that: The front end of the first connecting rod (15) is provided with a scraper (17); The scraper (17) is attached to the front end of the filter screen (24).