A marine lubricating oil ultrafiltration oil separator

Abstract

The present application relates to a marine lubricating oil ultrafiltration separator, belonging to the technical field of oil separators, comprising a separator body and a centrifuge disposed within the separator body, the centrifuge comprising a mounting shell and a rotating drum disposed within the mounting shell, the rotating drum comprising an upper shell, a lower shell, and a rubber drum, the upper shell being snapped onto the lower shell, the rubber drum being located within the lower shell, a cleaning box being disposed on the surface of the upper shell facing the lower shell, the surface of the cleaning box facing away from the upper shell being supported on the bottom of the rubber drum, the surface of the cleaning box facing the rubber drum being attached to the inner wall of the rubber drum, an opening being formed on the side of the cleaning box, the opening being disposed toward the side wall of the rubber drum, the cleaning box being slidably disposed on the bottom wall of the upper shell, the cleaning box sliding about the axis of the rubber drum, and a first driving member being disposed on the bottom wall of the upper shell for driving the cleaning box to slide and scrape impurities off the inner wall of the rubber drum. The present application has the advantage of improving the impurity separation effect of the centrifuge.

Description

Technical Field

[0001] The present application relates to the technical field of oil purifiers, and in particular to a marine lubricating oil ultrafiltration purifier. Background Art

[0002] A marine ultrafiltration oil purifier is a device used on ships to treat the lubricating oil in the engine's lubrication system. Lubricating oil plays a critical role in lubricating and protecting the engine during operation, and therefore requires regular filtration and cleaning to ensure its performance. A marine ultrafiltration oil purifier effectively removes impurities and contaminants from the lubricating oil, extending its service life and protecting the engine. This equipment typically includes an ultrafilter, a separator, and a heating device. The lubricating oil is filtered through the ultrafilter to remove fine particles and impurities, and then enters the separator for further separation and purification. The treated lubricating oil can then be recycled to ensure proper engine lubrication and operation. Marine ultrafiltration oil purifiers play a crucial role on ships, effectively protecting the engine, extending the service life of the lubricating oil, reducing maintenance costs, and improving navigation safety.

[0003] However, in the centrifugal separator, impurities in the oil are affected by centrifugal force and deposited on the inner wall of the drum rubber barrel. When the thickness of the impurity deposition is large, the separation effect of the impurities is affected. Summary of the Invention

[0004] In order to improve the separation effect of a centrifugal separator on impurities, the present application provides a marine lubricating oil ultrafiltration oil separator.

[0005] The present application provides a marine lubricating oil ultrafiltration oil separator adopting the following technical solution:

[0006] A marine lubricating oil ultrafiltration oil separator comprises an oil separator body and a centrifuge arranged in the oil separator body, the centrifuge comprises a mounting shell and a drum arranged in the mounting shell, the drum comprises an upper shell, a lower shell and a rubber barrel, the upper shell is snapped onto the lower shell, the rubber barrel is located in the lower shell, a cleaning box is provided on the surface of the upper shell facing the lower shell, the surface of the cleaning box facing away from the upper shell is supported on the bottom of the rubber barrel, the surface of the cleaning box facing the rubber barrel is attached to the inner wall of the rubber barrel, an opening is provided on the side of the cleaning box, the opening faces the side wall of the rubber barrel, the cleaning box is slidably arranged on the bottom wall of the upper shell, the cleaning box slides about the axis of the rubber barrel, and the bottom wall of the upper shell is provided with a first driving member for driving the cleaning box to slide and scrape impurities off the inner wall of the rubber barrel.

[0007] Optionally, a baffle is rotatably provided at the opening of the cleaning box, and the rotation axis of the baffle is parallel to the main line direction of the rubber barrel. The baffle is hinged on the surface of the opening facing away from the inner wall of the rubber barrel. A hinge shaft is rotatably provided in the cleaning box, and the baffle is fixedly provided on the hinge shaft. A torsion spring is sleeved on the hinge shaft, one side of the torsion spring is fixedly provided on the cleaning box, and the other side is fixedly provided on the baffle. When the cleaning box slides, the lubricating oil impacts the baffle and drives the baffle to rotate toward the cleaning box, and impurities enter the cleaning box relatively. When the cleaning box stops, the baffle closes the opening of the cleaning box, and a plurality of oil filter holes are provided on the surface of the cleaning box facing away from the opening.

[0008] Optionally, a fixing block is provided on the cleaning box, and the fixing block is located on the surface of the cleaning box away from the inner wall of the rubber barrel. The fixing block is located outside the baffle, and the baffle abuts against the fixing block.

[0009] Optionally, the fixed block is slidably set on the top wall of the cleaning box, and the sliding direction of the fixed block is perpendicular to the top wall of the cleaning box. A first spring is sleeved on the fixed block, one end of the first spring is fixedly set on the top wall of the cleaning box, and the other end is fixedly set on the fixed block. The first spring drives the fixed block to have a sliding movement tendency toward the inner wall of the rubber barrel.

[0010] Optionally, a collection box is provided in the cleaning box, the collection box is located at the bottom of the cleaning box near the rubber barrel, the top surface of the collection box is opened, the collection box is slidably provided in the cleaning box, the collection box slides along the busbar direction of the rubber barrel, and impurities entering the cleaning box fall into the collection box, and a second driving member is provided in the cleaning box for driving the collection box toward the top of the cleaning box.

[0011] Optionally, the collection box is provided with multiple layers, and the multiple layers of collection boxes are stacked along the busbar direction of the rubber barrel. The second driving member includes a first motor and a screw arranged on the side wall of the cleaning box. The length direction of the output shaft of the first motor is parallel to the busbar direction of the rubber barrel. The screw is coaxially arranged on the output shaft of the first motor. The collection box located at the bottom layer is threadedly connected to the screw. A fixing member is provided in the cleaning box, and the fixing member is used to fix the collection box to the top of the cleaning box.

[0012] Optionally, the fixing member includes a fixing rod slidably arranged on the side wall of the collection box, the sliding direction of the fixing rod is perpendicular to the side wall of the collection box, and the inner wall of the cleaning box is provided with a plug-in groove for the fixing rod to be plugged in. Along the busbar direction of the rubber barrel, from top to bottom, the diameters of the fixing rod and the plug-in groove gradually decrease.

[0013] Optionally, a connecting piece is provided between adjacent collection boxes, and the connecting piece includes a plug-in ball provided on the top of the lower collection box and a fixing groove provided on the bottom wall of the upper collection box for the plug-in ball to be plugged in, and the plug-in ball is made of rubber.

[0014] Optionally, the plug-in slot passes through the side wall of the cleaning box, and the fixing rod sleeve is provided with a second spring, one end of the second spring is fixedly set on the collection box, and the other end is fixedly set on the fixing rod.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. After the oil purifier has filtered the lubricating oil for a period of time, the oil purifier is stopped, and then the cleaning box is driven to slide by the first driving member. The cleaning box moves with the axis of the rubber barrel as the center. Since the cleaning box is attached to the inner wall of the rubber barrel, during the movement of the cleaning box, impurities on the side wall of the rubber barrel passively enter the cleaning box and are relatively stored in the cleaning box, thereby reducing impurities attached to the inner wall of the rubber barrel and improving the oil filtering effect of the oil purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a marine lubricating oil ultrafiltration oil separator according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of a hidden installation shell in a marine lubricating oil ultrafiltration oil separator according to an embodiment of the present application, intended to show the drum;

[0019] Figure 3 This is a schematic structural diagram of a rotary drum in a marine lubricating oil ultrafiltration oil separator according to an embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of an explosion of a drum in a marine lubricating oil ultrafiltration separator according to an embodiment of the present application;

[0021] Figure 5 This is a structural schematic diagram of the upper housing of a marine lubricating oil ultrafiltration oil separator according to an embodiment of the present application;

[0022] Figure 6 This is a schematic structural diagram of a rubber barrel in a marine lubricating oil ultrafiltration oil separator according to an embodiment of the present application;

[0023] Figure 7 yes Figure 5 A magnified schematic diagram of part A;

[0024] Figure 8 yes Figure 6 An enlarged schematic diagram of part B;

[0025] Figure 9This is a structural schematic diagram of a cleaning box in a marine lubricating oil ultrafiltration oil separator according to an embodiment of the present application;

[0026] Figure 10 This is a cross-sectional view of a cleaning box in a marine lubricating oil ultrafiltration separator according to an embodiment of the present application;

[0027] Figure 11 This is a structural schematic diagram of a collection box in a marine lubricating oil ultrafiltration oil separator according to an embodiment of the present application.

[0028] Explanation of the accompanying symbols: 1. Oil separator body; 2. Centrifuge; 21. Mounting shell; 22. Drum; 221. Upper shell; 222. Lower shell; 223. Rubber barrel; 3. Cleaning box; 4. Scraper plate; 5. Annular groove; 6. Slider; 7. Roller; 8. Baffle; 9. Fixed block; 10. First spring; 11. Collecting box; 12. First motor; 13. Screw; 14. Fixed rod; 15. Plug-in groove; 16. Second spring; 17. Plug-in ball; 18. Fixed groove. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-11 This application is described in further detail.

[0030] The present application discloses a marine lubricating oil ultrafiltration oil separator. Figure 1 and Figure 2 The marine lubricating oil ultrafiltration purifier comprises an oil purifier body 1 and a centrifuge 2 arranged in the oil purifier body 1;

[0031] Reference Figure 3 、 Figure 4 and Figure 5 The centrifuge 2 includes a mounting shell 21 and a drum 22 disposed in the mounting shell 21. The drum 22 includes an upper shell 221, a lower shell 222, and a rubber barrel 223. The upper shell 221 is buckled onto the lower shell 222. The lower shell 222 is barrel-shaped. After the upper shell 221 is buckled onto the lower shell 222, the upper shell 221 closes the opening of the lower shell 222. The rubber barrel 223 is located in the lower shell 222.

[0032] Reference Figure 6The surface of the upper shell 221 facing the lower shell 222 is provided with a cleaning box 3, the surface of the cleaning box 3 facing away from the upper shell 221 is supported on the bottom of the rubber barrel 223, and the surface of the cleaning box 3 facing the rubber barrel 223 is attached to the inner wall of the rubber barrel 223. An opening is provided on the side of the cleaning box 3, and the opening faces the side wall of the rubber barrel 223. Furthermore, a scraper plate 4 is provided on the side wall of the opening of the cleaning box 3. The cross-section of the scraper plate 4 is triangular, and the two right-angled sides of the scraper plate 4 are respectively supported on the bottom wall of the rubber barrel 223 and the end face of the cleaning box 3. The scraper plate 4 is used to scrape impurities attached to the rubber barrel 223. The cleaning box 3 is slidably set on the bottom wall of the upper shell 221, and the cleaning box 3 slides around the axis of the rubber barrel 223. The bottom wall of the upper shell 221 is provided with a first driving member for driving the cleaning box 3 to slide and scrape impurities off the inner wall of the rubber barrel 223.

[0033] Reference Figure 5 and Figure 7 In the embodiment of the present application, an annular groove 5 is provided on the bottom surface of the upper shell 221, and the first driving member includes a slider 6 slidably arranged in the annular groove 5 and a micro motor arranged on the slider 6. The cleaning box 3 is fixedly arranged on the slider 6. Furthermore, a plurality of rollers 7 are provided on the side wall of the slider 6, and the rollers 7 abut against the side wall of the annular groove 5. Any one of the rollers 7 is coaxially arranged on the output shaft of the micro motor, and the side wall of the roller 7 is provided with anti-slip grooves.

[0034] When cleaning the impurities on the inner wall of the rubber barrel 223, the micro motor is started, and the micro motor drives the roller 7 to rotate. The rotation of the roller 7 drives the slider 6 to move in the annular groove 5. The movement of the slider 6 drives the cleaning box 3 to move. The movement of the cleaning box 3 drives the scraper 4 to move. The scraper 4 moves to scrape the impurities on the side wall of the rubber barrel 223. The scraped impurities enter the cleaning box 3 along the inclined surface of the scraper 4, completing the removal of impurities. The operation is simple and convenient; and the oil filtering effect of the oil separator is improved.

[0035] Reference Figure 6 and Figure 8 In order to reduce the possibility of impurities in the cleaning box 3 falling out of the opening, a baffle 8 is rotatably provided at the opening of the cleaning box 3. The baffle 8 opens and closes the opening of the cleaning box 3. The rotation axis of the baffle 8 is parallel to the generatrix direction of the rubber barrel 223. The baffle 8 is hinged on the surface of the opening facing away from the inner wall of the rubber barrel 223. A hinge shaft is rotatably provided in the cleaning box 3. The baffle 8 is fixed on the hinge shaft. A torsion spring is sleeved on the hinge shaft. One side of the torsion spring is fixed on the cleaning box 3, and the other side is fixed on the baffle 8. When the cleaning box 3 slides, the lubricating oil impacts the baffle 8 and drives the baffle 8 to rotate toward the cleaning box 3, and impurities enter the cleaning box 3 relatively. When the cleaning box 3 stops, the baffle 8 closes the opening of the cleaning box 3, and a plurality of oil filter holes are provided on the surface of the cleaning box 3 facing away from the opening.

[0036] When the cleaning box 3 slides, the lubricating oil impacts the baffle 8 and drives the baffle 8 to rotate toward the inside of the cleaning box 3, and the impurities and lubricating oil enter the cleaning box 3 relatively. Under the action of the torsion spring, the baffle 8 has a tendency to close the opening of the cleaning box 3. When the cleaning box 3 stops, the baffle 8 closes the opening of the cleaning box 3 under the action of the torque of the torsion spring, so as to relatively store the impurities and lubricating oil in the cleaning box 3. After the lubricating oil and impurities enter the cleaning box 3, the lubricating oil is moved out from the oil filter hole.

[0037] Reference Figure 6 and Figure 8 When the oil separator is filtering oil, in order to reduce the possibility that the baffle 8 accidentally rotates toward the outside of the cleaning box 3 and causes the opening of the cleaning box 3 to open, a fixing block 9 is provided on the cleaning box 3. The fixing block 9 is located on the surface of the cleaning box 3 away from the inner wall of the rubber barrel 223. The fixing block 9 is located outside the baffle 8, and the baffle 8 abuts on the fixing block 9; after the cleaning box 3 stores impurities inside, under the action of the torsion spring, the torsion spring drives the baffle 8 to rotate toward the outside of the cleaning box 3, and the baffle 8 rotates and abuts on the fixing block 9, thereby fixing the baffle 8 relatively at the above position, thereby reducing the possibility that impurities in the cleaning box 3 accidentally fall out.

[0038] Reference Figure 6 and Figure 8 Furthermore, in order to facilitate the removal of impurities in the cleaning box 3, before removing the impurities, it is necessary to rotate the baffle 8 toward the outside of the cleaning box 3 to open the opening of the cleaning box 3. However, due to the obstruction of the fixed block 9, it is difficult to rotate the baffle 8 out. Therefore, in the embodiment of the present application, the fixed block 9 is slidably arranged on the top wall of the cleaning box 3, and the sliding direction of the fixed block 9 is perpendicular to the top wall of the cleaning box 3. A first spring 10 is sleeved on the fixed block 9. One end of the first spring 10 is fixedly arranged on the top wall of the cleaning box 3, and the other end is fixedly arranged on the fixed block 9. The first spring 10 drives the fixed block 9 to have a sliding movement tendency toward the inner wall of the rubber barrel 223. When removing impurities in the cleaning box 3, the fixed block 9 is slid to separate the fixed block 9 from the baffle 8, and then the baffle 8 is rotated toward the outside of the cleaning box 3. The baffle 8 is rotated out of the cleaning box 3, and then the impurities in the cleaning box 3 are removed. The operation is simple and convenient.

[0039] Reference Figure 6 and Figure 9When the impurities are collected in the cleaning box 3, the impurities float in the cleaning box 3 under the action of the lubricating oil. At the same time, when the cleaning box 3 slides to clean the inside of the rubber barrel 223, the lubricating oil tends to flow out from the opening of the cleaning box 3, thereby causing the impurities scraped in the early stage to fall. Therefore, in the embodiment of the present application, a collection box 11 is provided in the cleaning box 3. The collection box 11 abuts against the inner wall of the cleaning box 3. The collection box 11 is located at the bottom of the cleaning box 3 close to the rubber barrel 223. The top surface of the collection box 11 is opened. The collection box 11 is slidably set in the cleaning box 3. The collection box 11 slides along the generatrix direction of the rubber barrel 223. The impurities entering the cleaning box 3 fall into the collection box 11. A second driving member for driving the collection box 11 toward the top of the cleaning box 3 is provided in the cleaning box 3;

[0040] Reference Figure 9 and Figure 10 Furthermore, the collection box 11 is provided with multiple layers, and the multiple layers of collection boxes 11 are stacked along the busbar direction of the rubber barrel 223. The second driving member includes a first motor 12 and a screw 13 arranged on the side wall of the cleaning box 3. The length direction of the output shaft of the first motor 12 is parallel to the busbar direction of the rubber barrel 223. The screw 13 is coaxially arranged on the output shaft of the first motor 12, and the collection box 11 located at the bottom layer is threadedly connected to the screw 13.

[0041] After impurities enter the cleaning box 3, the first motor 12 is started, and the first motor 12 drives the lead screw 13 to rotate. The rotation of the lead screw 13 drives the collection box 11 to move, and the collection box 11 moves toward the top of the cleaning box 3. The collection box 11 moves to collect impurities in the cleaning box 3. When the collection box 11 moves to the top of the cleaning box 3, the cleaning box 3 temporarily locks the impurities at the top of the cleaning box 3, thereby reducing the possibility of impurities being accidentally moved out. Furthermore, the cleaning box 3 is provided with multiple layers, which is convenient for collecting impurities in the cleaning box 3 multiple times. After the top collection box 11 collects the impurities, the collection boxes 11 below the top layer return to the bottom of the cleaning box 3. Then, after a period of time, the collection box 11 is slid again to collect impurities in the cleaning box 3, and the collection box 11 abuts against the collection box 11 on the top layer.

[0042] Reference Figure 10 and Figure 11After the top collection box 11 blocks the impurities at the top of the cleaning box 3, when the lower collection box 11 returns to its initial position, the upper collection box 11 is easy to fall. Therefore, in the embodiment of the present application, a fixing member is provided in the cleaning box 3, and the fixing member is used to fix the collection box 11 to the top of the cleaning box 3. The fixing member includes a fixing rod 14 slidably provided on the side wall of the collection box 11. The sliding direction of the fixing rod 14 is perpendicular to the side wall of the collection box 11. The inner wall of the cleaning box 3 is provided with a plug-in slot 15 for the fixing rod 14 to be plugged in. 223 busbar direction, from top to bottom, the diameters of the fixing rod 14 and the plug-in slot 15 gradually decrease; after the top-layer collection box 11 is placed on the top of the cleaning box 3, the fixing rod 14 slides into the plug-in slot 15, and the top-layer collection box 11 is fixed in the cleaning box 3, thereby reducing the possibility of impurities in the collection box 11 falling out; the diameters of the fixing rod 14 and the plug-in slot 15 of the multi-layer collection box 11 gradually decrease from top to bottom, which facilitates the lower-layer collection box 11 to pass through the plug-in slot 15, and reduces the possibility of the collection box 11 being accidentally fixed to the bottom.

[0043] Reference Figure 10 and Figure 11 Furthermore, in the embodiment of the present application, the plug-in slot 15 passes through the side wall of the cleaning box 3, and the fixing rod 14 is sleeved with a second spring 16, one end of the second spring 16 is fixedly set on the collection box 11, and the other end is fixedly set on the fixing rod 14; the plug-in slot 15 passes through the side wall of the cleaning box 3, which is convenient for pressing the fixing rod 14 to move out of the plug-in slot 15, thereby facilitating the removal of the collection box 11 from the cleaning box 3, and then facilitating the removal of impurities in the collection box 11; under the action of the second spring 16, it is convenient for the fixing rod 14 to slide and plug into the plug-in slot 15, so that the collection box 11 can be fixed at the required location.

[0044] Reference Figure 10 and Figure 11 In order to facilitate the stacked collection boxes 11 to slide down to the initial position, a connecting piece is provided between adjacent collection boxes 11. The connecting piece includes a plug-in ball 17 arranged on the top of the lower collection box 11 and a fixed groove 18 opened on the bottom wall of the upper collection box 11 for the plug-in ball 17 to plug in. The plug-in ball 17 is made of rubber; under the action of the plug-in ball 17 and the fixed groove 18, the adjacent collection boxes 11 are connected as a whole. When the collection box 11 slides down, it drives the collection box 11 except the fixed one to slide down to the initial position, thereby facilitating the lower collection box 11 to collect impurities.

[0045] The implementation principle of a marine lubricating oil ultrafiltration oil separator in the embodiment of the present application is as follows:

[0046] When cleaning the impurities on the inner wall of the rubber barrel 223, the micro motor is started, and the micro motor drives the roller 7 to rotate. The rotation of the roller 7 drives the slider 6 to move in the annular groove 5. The movement of the slider 6 drives the cleaning box 3 to move. The movement of the cleaning box 3 drives the scraper 4 to move. The scraper 4 moves to scrape the impurities on the side wall of the rubber barrel 223. The scraped impurities enter the cleaning box 3 along the inclined surface of the scraper 4, completing the removal of impurities. The operation is simple and convenient; and the oil filtering effect of the oil separator is improved.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A marine lubricating oil ultrafiltration oil separator, characterized by: The invention comprises an oil separator body (1) and a centrifuge (2) arranged in the oil separator body (1); the centrifuge (2) comprises a mounting shell (21) and a rotating drum (22) arranged in the mounting shell (21); the rotating drum (22) comprises an upper shell (221), a lower shell (222) and a rubber barrel (223); the upper shell (221) is buckled on the lower shell (222); the rubber barrel (223) is located in the lower shell (222); a cleaning box (3) is provided on the surface of the upper shell (221) facing the lower shell (222); the cleaning box (3) is provided on the back The surface away from the upper shell (221) is supported on the bottom of the rubber barrel (223); the surface of the cleaning box (3) facing the rubber barrel (223) is attached to the inner wall of the rubber barrel (223); an opening is provided on the side of the cleaning box (3), and the opening faces the side wall of the rubber barrel (223); the cleaning box (3) is slidably arranged on the bottom wall of the upper shell (221); the cleaning box (3) slides around the axis of the rubber barrel (223); and the bottom wall of the upper shell (221) is provided with a first driving member for driving the cleaning box (3) to slide and scrape impurities from the inner wall of the rubber barrel (223); A baffle (8) is rotatably provided at the opening of the cleaning box (3), and the rotation axis of the baffle (8) is parallel to the generatrix direction of the rubber barrel (223). The baffle (8) is hinged on the surface of the opening facing away from the inner wall of the rubber barrel (223). A hinge shaft is rotatably provided in the cleaning box (3), and the baffle (8) is fixedly provided on the hinge shaft. A torsion spring is sleeved on the hinge shaft, and one side of the torsion spring is fixedly provided on the cleaning box (3), and the other side is fixedly provided on the baffle (8). When the cleaning box (3) slides, the lubricating oil impacts the baffle (8) and drives the baffle (8) to rotate toward the inside of the cleaning box (3), and impurities relatively enter the cleaning box (3). When the cleaning box (3) stops, the baffle (8) closes the opening of the cleaning box (3). The surface of the cleaning box (3) facing away from the opening is provided with a plurality of oil filter holes. A collecting box (11) is provided in the cleaning box (3), the collecting box (11) is located at the bottom of the cleaning box (3) close to the rubber barrel (223), the top surface of the collecting box (11) is provided with an opening, the collecting box (11) is slidably provided in the cleaning box (3), the collecting box (11) slides along the generatrix direction of the rubber barrel (223), and the impurities entering the cleaning box (3) fall into the collecting box (11), and a second driving member for driving the collecting box (11) toward the top of the cleaning box (3) is provided in the cleaning box (3).

2. The marine lubricating oil ultrafiltration purifier according to claim 1, characterized in that: The cleaning box (3) is provided with a fixing block (9), the fixing block (9) being located on the surface of the cleaning box (3) facing away from the inner wall of the rubber barrel (223), the fixing block (9) being located outside the baffle (8), and the baffle (8) being in contact with the fixing block (9).

3. The marine lubricating oil ultrafiltration purifier according to claim 2, characterized in that: The fixed block (9) is slidably arranged on the top wall of the cleaning box (3), and the sliding direction of the fixed block (9) is perpendicular to the top wall of the cleaning box (3). A first spring (10) is sleeved on the fixed block (9), one end of the first spring (10) is fixedly arranged on the top wall of the cleaning box (3), and the other end is fixedly arranged on the fixed block (9). The first spring (10) drives the fixed block (9) to have a sliding movement tendency toward the inner wall of the rubber barrel (223).

4. The marine lubricating oil ultrafiltration purifier according to claim 1, characterized in that: The collecting box (11) is provided with multiple layers, and the multiple layers of the collecting boxes (11) are stacked along the busbar direction of the rubber barrel (223). The second driving member comprises a first motor (12) and a lead screw (13) arranged on the side wall of the cleaning box (3). The length direction of the output shaft of the first motor (12) is parallel to the busbar direction of the rubber barrel (223). The lead screw (13) is coaxially arranged on the output shaft of the first motor (12). The collecting box (11) located at the bottom layer is threadedly connected to the lead screw (13). A fixing member is provided in the cleaning box (3), and the fixing member is used to fix the collecting box (11) to the top of the cleaning box (3).

5. The marine lubricating oil ultrafiltration purifier according to claim 4, characterized in that: The fixing member comprises a fixing rod (14) slidably arranged on the side wall of the collection box (11), the sliding direction of the fixing rod (14) being perpendicular to the side wall of the collection box (11), the inner wall of the cleaning box (3) being provided with a plug-in slot (15) for plugging the fixing rod (14), and the diameters of the fixing rod (14) and the plug-in slot (15) gradually decreasing from top to bottom along the busbar direction of the rubber barrel (223).

6. The marine lubricating oil ultrafiltration purifier according to claim 4, characterized in that: A connecting piece is provided between adjacent collection boxes (11), the connecting piece comprising a plug-in ball (17) provided on the top of the lower collection box (11) and a fixing groove (18) provided on the bottom wall of the upper collection box (11) for the plug-in ball (17) to be plugged in, and the plug-in ball (17) is made of rubber.

7. The marine lubricating oil ultrafiltration purifier according to claim 5, characterized in that: The insertion slot (15) passes through the side wall of the cleaning box (3); the fixing rod (14) is sleeved with a second spring (16); one end of the second spring (16) is fixedly arranged on the collection box (11), and the other end is fixedly arranged on the fixing rod (14).

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