Multi-stage lubricating oil filtering device

Abstract

The utility model discloses a multistage filtering device for lubricating oil, which relates to the technical field of lubricating oil production and comprises a treatment tank, and a first-stage filter cartridge, a second-stage filter cartridge and a third-stage filter cartridge which are positioned in the treatment tank, the first-stage filter cartridge, the second-stage filter cartridge and the third-stage filter cartridge are all fixedly connected to the outer wall of the connecting pipe in a sleeving mode, a motor for driving the connecting pipe to rotate is installed on the outer wall of the treatment tank, and three scraping strips making contact with the inner walls of the first-stage filter cartridge, the second-stage filter cartridge and the third-stage filter cartridge respectively are fixedly arranged on the inner top wall of the treatment tank. According to the utility model, the lubricating oil is filtered step by step, impurities in the lubricating oil are effectively removed, the finally discharged lubricating oil is ensured to be purer, the filtering effect is enhanced by utilizing centrifugal force, and the centrifugal force enables the lubricating oil to flow more quickly when the lubricating oil passes through the filter cartridge, and meanwhile, the separation of the impurities is accelerated, so that the efficiency of the whole filtering system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lubricating oil production, in particular to a multi-stage filtering device for lubricating oil. Background Art

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts, mainly playing roles such as lubrication, auxiliary cooling, rust prevention, cleaning, sealing, and buffering. During the production process of lubricating oil, a filtering device is required to filter the produced lubricating oil.

[0003] During the process of filtering impurities in lubricating oil by the filtering device, the following problems exist:

[0004] 1. Existing filtering equipment does not have the function of multi-stage filtering, and cannot achieve the effect of effectively filtering lubricating oil, thus reducing the production quality of lubricating oil.

[0005] 2. When filtering lubricating oil, it often flows downward by gravity and passes through the filter screen for filtering. The flow rate of the lubricating oil is slow, which leads to a low overall filtering progress and affects the filtering efficiency.

[0006] 3. The impurities in the lubricating oil may block the mesh holes of the filter screen. It is not easy to clean, and at the same time, with the increase of the filtering time, the filter cartridge will be blocked, reducing the passing rate of the lubricating oil, delaying the filtering process, and the impurities are not convenient to clean. Content of the Utility Model

[0007] The purpose of the utility model is to solve the problems existing in the prior art, and a multi-stage filtering device for lubricating oil is proposed.

[0008] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0009] A multi-stage filtering device for lubricating oil includes a processing tank, and a primary filter cartridge, a secondary filter cartridge, and a tertiary filter cartridge located inside the processing tank. A connecting pipe is rotatably arranged at the bottom of the processing tank. The primary filter cartridge, the secondary filter cartridge, and the tertiary filter cartridge are all fixedly sleeved on the outer wall of the connecting pipe. A motor for driving the connecting pipe to rotate is installed on the outer wall of the processing tank. Three scraping bars that respectively contact the inner walls of the primary filter cartridge, the secondary filter cartridge, and the tertiary filter cartridge are fixedly arranged on the inner top wall of the processing tank.

[0010] Among them, an oil inlet pipe located directly above the primary filter cartridge is connected and installed at the top of the processing tank. An oil outlet pipe is arranged at the bottom end of the processing tank. A discharge pipe is fixedly arranged at the bottom of the processing tank. The top end of the discharge pipe extends to the connecting pipe and is rotatable with respect to the connecting pipe.

[0011] Preferably, the apertures of the primary filter cartridge, secondary filter cartridge, and tertiary filter cartridge are arranged from large to small. The secondary filter cartridge surrounds the primary filter cartridge, and the tertiary filter cartridge surrounds the secondary filter cartridge.

[0012] Preferably, a main turntable is fixedly sleeved on the output shaft of the motor. A secondary turntable is fixedly sleeved on the outer wall of the connecting pipe and is located below the processing tank. A transmission belt is arranged between the main turntable and the secondary turntable for transmission.

[0013] Preferably, the diameter of the main turntable is an integer multiple of the diameter of the secondary turntable, and the multiple is at least two times.

[0014] Preferably, a primary control valve, a secondary control valve, and a tertiary control valve are respectively installed inside the two connecting pipes from top to bottom. The primary control valve, secondary control valve, and tertiary control valve are respectively located at the lowest ends of the primary filter cartridge, secondary filter cartridge, and tertiary filter cartridge.

[0015] Preferably, three annular support seats are fixedly connected to the inner top wall of the processing tank. Ball bearings are embedded on both sides of the inner walls of the three annular support seats. The tops of the primary filter cartridge, secondary filter cartridge, and tertiary filter cartridge respectively extend into the corresponding annular support seats and contact the ball bearings.

[0016] Preferably, oil seals are embedded in the three annular support seats, and the three oil seals respectively contact the tops of the primary filter cartridge, secondary filter cartridge, and tertiary filter cartridge.

[0017] Preferably, a circulation pump is fixedly installed on the outer wall of the processing tank. The input end and output end of the circulation pump are respectively communicated with the oil discharge pipe and the oil inlet pipe through pipelines.

[0018] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0019] 1. In the present utility model, after the lubricating oil is gradually filtered through the primary filter cartridge, secondary filter cartridge, and tertiary filter cartridge, impurities therein can be effectively removed, ensuring that the finally discharged lubricating oil is purer, improving the use efficiency of the lubricating oil and the performance of the equipment.

[0020] 2. In the present utility model, by driving the main turntable with the motor and using the transmission belt to rotate the connecting pipe and the primary filter cartridge, secondary filter cartridge, and tertiary filter cartridge thereon, not only a physical filtering effect is provided, but also the filtering effect is enhanced by the centrifugal force. The centrifugal force enables the lubricating oil to flow faster when passing through the filter cartridge, and at the same time accelerates the separation of impurities, thereby improving the efficiency of the entire filtering system.

[0021] 3. In the present utility model, the inner wall of the filter cartridge can be effectively cleaned by the scraping strip, and the lubricating oil and impurities adhered to the inner surface of the filter cartridge are scraped off, preventing the accumulation of impurities on the surface of the filter cartridge, maintaining the cleanliness and smoothness of the filter cartridge, reducing the probability of filter cartridge blockage, maintaining a stable filtration rate, and ensuring the efficient progress of the filtration process.

[0022] 4. In the present utility model, after the lubricating oil filtration is completed, by opening the first-stage control valve, the second-stage control valve, and the third-stage control valve, the impurities in the filter cartridge are smoothly discharged through the discharge pipe, facilitating the centralized treatment and cleaning of the impurities.

[0023] 5. In the present utility model, after the filtration is completed, the filtered lubricating oil can be pumped out by closing the oil discharge pipe and opening the circulation pump, and then re-introduced into the oil inlet pipe to achieve cyclic filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional structural schematic diagram of a multi-stage lubricating oil filtration device proposed by the present utility model;

[0025] Figure 2 is a bottom view structural schematic diagram of a multi-stage lubricating oil filtration device proposed by the present utility model;

[0026] Figure 3 is a partial cross-sectional three-dimensional structural schematic diagram of a multi-stage lubricating oil filtration device proposed by the present utility model;

[0027] Figure 4 is a Figure 3 magnified structural schematic diagram of part A in a multi-stage lubricating oil filtration device proposed by the present utility model;

[0028] Figure 5 is a Figure 3 magnified structural schematic diagram of part B in a multi-stage lubricating oil filtration device proposed by the present utility model.

[0029] Legend: 1. Treatment tank; 2. First-stage filter cartridge; 3. Second-stage filter cartridge; 4. Third-stage filter cartridge; 5. Connecting pipe; 6. Motor; 7. Scraping strip; 8. Oil inlet pipe; 9. Oil outlet pipe; 10. Discharge pipe; 11. Main turntable; 12. Sub turntable; 13. Transmission belt; 14. First-stage control valve; 15. Second-stage control valve; 16. Third-stage control valve; 17. Annular support seat; 18. Ball; 19. Oil seal; 20. Circulation pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0031] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0032] As Figures 1-4 shown, the present utility model provides a multi-stage lubricating oil filtering device, which includes a treatment tank 1, and a primary filter cartridge 2, a secondary filter cartridge 3, and a tertiary filter cartridge 4 located inside the treatment tank 1. A connecting pipe 5 is rotatably arranged at the bottom of the treatment tank 1. The primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 are all fixedly sleeved on the outer wall of the connecting pipe 5. A motor 6 for driving the connecting pipe 5 to rotate is installed on the outer wall of the treatment tank 1. Three scraping bars 7 that respectively contact the inner walls of the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 are fixedly arranged on the inner top wall of the treatment tank 1;

[0033] Among them, an oil inlet pipe 8 located directly above the primary filter cartridge 2 is connected and installed at the top of the treatment tank 1. An oil outlet pipe 9 is arranged at the bottom end of the treatment tank 1. A discharge pipe 10 is fixedly arranged at the bottom of the treatment tank 1. The top end of the discharge pipe 10 extends to the connecting pipe 5 and is rotatable with respect to the connecting pipe 5.

[0034] In this embodiment, the apertures of the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 are set from large to small. The secondary filter cartridge 3 surrounds the primary filter cartridge 2, and the tertiary filter cartridge 4 surrounds the secondary filter cartridge 3.

[0035] In this embodiment, a main turntable 11 is fixedly sleeved on the output shaft of the motor 6. A secondary turntable 12 located below the treatment tank 1 is fixedly sleeved on the outer wall of the connecting pipe 5. A transmission belt 13 is arranged between the main turntable 11 and the secondary turntable 12 in a transmission manner. The motor 6 drives the main turntable 11 and makes the secondary turntable 12 rotate through the transmission belt 13, thereby driving the connecting pipe 5 to make the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 rotate.

[0036] In this embodiment, the diameter of the main turntable 11 is an integer multiple of the diameter of the secondary turntable 12, and the multiple is at least two times. The rotational speed of the connecting pipe 5 is doubled compared to the output rotational speed of the motor 6, increasing the centrifugal force.

[0037] In this embodiment, a primary control valve 14, a secondary control valve 15, and a tertiary control valve 16 are respectively installed inside the two connecting pipes 5 from top to bottom. The primary control valve 14, the secondary control valve 15, and the tertiary control valve 16 are respectively located at the lowest ends of the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4. By controlling the opening and closing of the primary control valve 14, the secondary control valve 15, and the tertiary control valve 16, the discharge of the filtered impurities is controlled.

[0038] In this embodiment, three annular support seats 17 are fixedly connected to the inner top wall of the treatment tank 1. Ball bearings 18 are embedded on both sides of the inner walls of the three annular support seats 17. The tops of the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 respectively extend into the corresponding annular support seats 17 and contact the ball bearings 18. When the connecting pipe 5 drives the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 to rotate, through the cooperation of the ball bearings 18 and the annular support seats 17, the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 rotate stably without skewing.

[0039] In this embodiment, oil seals 19 are embedded in the three annular support seats 17. The three oil seals 19 respectively contact the tops of the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4. The oil seals 19 seal between the annular support seats 17 and the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4, preventing lubricating oil from passing through the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 without filtration.

[0040] In this embodiment, a circulation pump 20 is fixedly installed on the outer wall of the treatment tank 1. The input end and the output end of the circulation pump 20 are respectively communicated with the oil drain pipe and the oil inlet pipe 8 through pipelines. After the filtration is completed, the oil drain pipe can be closed and the circulation pump 20 can be started to pump out the filtered lubricating oil and then re-introduce it into the oil inlet pipe 8 to achieve circulating filtration.

[0041] Usage method and working principle of this device:

[0042] When this device is in use, first, start the motor 6. The motor 6 drives the main turntable 11 to rotate the connecting pipe 5 through the transmission belt 13. The connecting pipe 5 drives the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 to rotate. Lubricating oil is injected into the primary filter cartridge 2 through the oil inlet pipe 8. After being preliminarily filtered by the primary filter cartridge 2, the lubricating oil enters the secondary filter cartridge 3, and then enters the tertiary filter cartridge 4 after being filtered again by the secondary filter cartridge 3. Finally, more refined lubricating oil is obtained after being filtered by the tertiary filter cartridge 4.

[0043] Secondly, since the connecting pipe 5 drives the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 to rotate, centrifugal force is generated while the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 are filtering, centrifuging the lubricating oil therein, so that the lubricating oil can pass through the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 more quickly, improving the filtration efficiency of the lubricating oil.

[0044] During the above process, since the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4 rotate, the scraping strips 7 in contact with the three will clean the inner walls of the primary filter cartridge 2, the secondary filter cartridge 3, and the tertiary filter cartridge 4, scraping off the lubricating oil and impurities adhering to the inner surfaces of the three, preventing them from accumulating on the surface of the filter cartridges, avoiding the reduction of the lubricating oil passing rate caused by impurities blocking the filter cartridges, and not delaying the filtration process.

[0045] After the filtration is completed and the lubricating oil is discharged from the oil outlet pipe 9, the first-stage control valve 14, the second-stage control valve 15, and the third-stage control valve 16 are opened. The impurities in the first-stage filter cartridge 2, the second-stage filter cartridge 3, and the third-stage filter cartridge 4 will enter the connecting pipe 5 and be discharged through the discharge pipe 10, facilitating the cleaning of the filtered impurities.

[0046] The above is only the preferred embodiment of the present invention and is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A lubricating oil multi-stage filtering device, characterized in that: The invention comprises a treatment tank (1), and a primary filter cartridge (2), a secondary filter cartridge (3) and a tertiary filter cartridge (4) located in the treatment tank (1); a connecting pipe (5) is rotatably arranged at the bottom of the treatment tank (1); the primary filter cartridge (2), the secondary filter cartridge (3) and the tertiary filter cartridge (4) are all fixedly sleeved on the outer wall of the connecting pipe (5); a motor (6) for driving the connecting pipe (5) to rotate is installed on the outer wall of the treatment tank (1); and three scraping strips (7) are fixedly arranged on the inner top wall of the treatment tank (1) and are in contact with the inner walls of the primary filter cartridge (2), the secondary filter cartridge (3) and the tertiary filter cartridge (4) respectively; The top of the treatment tank (1) is connected to an oil inlet pipe (8) located directly above the primary filter cartridge (2), the bottom of the treatment tank (1) is provided with an oil outlet pipe (9), and the bottom of the treatment tank (1) is fixedly provided with a discharge pipe (10), the top end of which extends to the connecting pipe (5) and is rotatable with respect to the connecting pipe (5).

2. A lubricating oil multi-stage filtering device according to claim 1, characterized in that: The apertures of the primary filter cartridge (2), the secondary filter cartridge (3) and the tertiary filter cartridge (4) are arranged from large to small; the secondary filter cartridge (3) surrounds the primary filter cartridge (2), and the tertiary filter cartridge (4) surrounds the secondary filter cartridge (3).

3. A lubricating oil multi-stage filtering device according to claim 1, characterized in that: A main turntable (11) is fixedly sleeved on the output shaft of the motor (6), a secondary turntable (12) located below the processing tank (1) is fixedly sleeved on the outer wall of the connecting pipe (5), and a transmission belt (13) is provided between the main turntable (11) and the secondary turntable (12).

4. A lubricating oil multi-stage filtering device according to claim 3, characterized in that: The diameter of the main turntable (11) is an integral multiple of the diameter of the auxiliary turntable (12), and the multiple is at least two.

5. The lubricating oil multi-stage filtering device according to claim 1, characterized in that: A primary control valve (14), a secondary control valve (15) and a tertiary control valve (16) are installed inside the two connecting pipes (5) from top to bottom, respectively. The primary control valve (14), the secondary control valve (15) and the tertiary control valve (16) are located at the lowest ends of the primary filter cartridge (2), the secondary filter cartridge (3) and the tertiary filter cartridge (4), respectively.

6. The lubricating oil multi-stage filtering device according to claim 1, characterized in that: The inner top wall of the treatment tank (1) is fixedly connected to three annular support seats (17), and balls (18) are embedded on both sides of the inner walls of the three annular support seats (17). The top ends of the primary filter cartridge (2), the secondary filter cartridge (3) and the tertiary filter cartridge (4) respectively extend into the corresponding annular support seats (17) and contact the balls (18).

7. A lubricating oil multi-stage filtering device according to claim 6, characterized in that: Oil seals (19) are embedded in the three annular support seats (17), and the three oil seals (19) are in contact with the top ends of the primary filter cartridge (2), the secondary filter cartridge (3) and the tertiary filter cartridge (4) respectively.

8. The lubricating oil multi-stage filtering device according to claim 1, characterized in that: A circulation pump (20) is fixedly mounted on the outer wall of the treatment tank (1), and the input end and the output end of the circulation pump (20) are respectively connected to the oil discharge pipe and the oil inlet pipe (8) through pipelines.

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