Heat exchanger for cooling lubricating oil

Abstract

The utility model discloses a heat exchanger for cooling lubricating oil, which belongs to the field of heat exchangers and comprises a shell, and a filter mechanism is arranged on one side of the shell and comprises a filter tank, a coarse filter screen, a fine filter screen, a first rotating shaft, a brush plate, a first belt wheel, a second rotating shaft, a threaded blade and a motor. The coarse filter screen and the fine filter screen are installed in the filter tank, lubricating oil entering the heat exchanger can be filtered in a multi-stage mode, the coarse filter screen intercepts large impurities such as metal chippings, the fine filter screen further filters small impurities, the content of the impurities in the lubricating oil is effectively reduced, the risk that a heat transfer pipe is blocked due to impurity deposition is reduced, and the service life of the heat transfer pipe is prolonged. Due to the fact that the filtering mechanism effectively reduces impurities in the lubricating oil and reduces the possibility that the heat transfer pipe is blocked, the lubricating oil can smoothly flow in the heat transfer pipe, the effective heat exchange area between the lubricating oil and a cooling medium is guaranteed, and the lubricating oil can be fully cooled.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, and in particular to a heat exchanger for cooling lubricating oil. Background Technology

[0002] Heat exchangers are necessary for cooling lubricating oil because mechanical equipment generates a large amount of heat during operation due to friction and energy conversion, causing the lubricating oil temperature to rise. High temperatures accelerate lubricating oil oxidation and deterioration, reduce viscosity, and disrupt the formation and maintenance of the oil film, thereby increasing equipment wear, reducing efficiency, and even causing malfunctions. Heat exchangers efficiently transfer heat from the lubricating oil to a cooling medium, such as cold water or air, rapidly reducing the lubricating oil temperature to a suitable operating range. This maintains the lubricating oil's good lubricating properties, ensures stable equipment operation, reduces energy loss and component wear caused by high temperatures, and ultimately extends equipment lifespan and improves overall efficiency.

[0003] In the prior art, a Chinese utility model patent with publication number "CN209820222U" and patent name "A Waste Lubricating Oil Regeneration Pressure Reduction Heat Exchange Device" discloses a tubular heat exchanger for cooling lubricating oil. The patent describes a technical solution including "a heat exchanger body, the heat exchanger body including a shell, a fixed tube sheet at the front end of the shell, a floating tube sheet at the rear end of the shell, a heat transfer tube bundle between the fixed tube sheet and the floating tube sheet, a rear tube box at the bottom of the shell, a floating head inside the rear tube box, the front end of the floating head connected to the floating tube sheet, the bottom center of the floating head connected to the front end of a short section, the rear end of the short section connected to the front end of an expansion joint, the rear end of the expansion joint connected to a long section, the rear end of the long section extending to the bottom of the rear tube box and connected to an oil inlet pipe through a flange, and a stuffing box assembly between the long section and the rear tube box".

[0004] However, when using this tubular heat exchanger to cool lubricating oil, the lack of filtration measures for the lubricating oil means that various impurities will be generated during the use of the lubricating oil. For example, during long-term operation of mechanical equipment, the wear of parts will produce metal shavings. These impurities flow with the lubricating oil in the tubular heat exchanger. When the flow rate is low or there are uneven areas on the inner wall of the heat transfer tube, the impurities are easy to deposit and gradually lead to blockage of the heat transfer tube. Blockage of the heat transfer tube will reduce the heat exchange area between the lubricating oil and the cooling medium. Because after some heat transfer tubes are blocked, the lubricating oil can only exchange heat through the unblocked parts, which leads to a reduction in the effective heat exchange area, thereby reducing the overall heat exchange efficiency of the heat exchanger and making it impossible for the lubricating oil to be adequately cooled.

[0005] Therefore, in order to solve the above-mentioned technical problems, this utility model proposes a heat exchanger for cooling lubricating oil. Utility Model Content

[0006] The main objective of this invention is to provide a heat exchanger for cooling lubricating oil, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A heat exchanger for cooling lubricating oil includes a housing. A filtration mechanism is provided on one side of the housing. The filtration mechanism includes a filter tank, a coarse filter screen, a fine filter screen, a first rotating shaft, a brush plate, a first pulley, a second rotating shaft, threaded blades, and a motor. A drain pipe is fixedly connected to the bottom of the filter tank via a valve. The coarse filter screen and the fine filter screen are fixedly connected inside the filter tank. The first rotating shaft is movably connected inside the filter tank via first rotating rods at both ends. A brush plate is fixedly connected to the outer wall of the first rotating shaft. The second rotating shaft is movably connected inside the drain pipe via a second rotating rod at one end. Threaded blades are fixedly connected to the outer wall of the second rotating shaft. A first pulley and a second pulley are fixedly connected to one end of the first rotating rod and the second rotating rod, respectively. The first pulley and the second pulley are movably connected by a belt. The first pulley is also fixedly connected to the output end of the motor.

[0009] As a further optimization of this utility model, tube sheets are fixedly installed at both ends of the shell, and several baffles are fixedly installed on the inner wall of the tube sheets. Several heat transfer tubes are fixedly installed between the tube sheets and pass through the baffles. A tube box is fixedly installed on the outer wall of the tube sheets. An oil inlet is fixedly installed on the outer wall of the tube box at the left end, and an oil outlet is fixedly installed on the outer wall of the tube box at the right end. A liquid inlet and a liquid outlet are also fixedly installed on the outer wall of the shell. An oil inlet pipe is fixedly installed on one side of the top of the outer wall of the filter tank. An oil outlet pipe is fixedly installed at the bottom of the right side wall of the filter tank. The oil outlet pipe is fixedly installed together with the oil inlet. A set of symmetrical drain ports are also fixedly installed on the bottom surface of the filter tank. The lubricating oil enters the filter tank from the oil inlet pipe, and after filtration, it enters the left end tube box from the oil outlet pipe. Then, it exchanges heat with the cooling medium in the shell through the heat transfer tube and finally flows out from the oil outlet of the right end tube box. The cooling medium enters the shell from the liquid inlet. Under the guidance of the baffle plate, it fully exchanges heat with the lubricating oil in the heat transfer tube and is discharged from the liquid outlet to achieve heat exchange and cooling of the lubricating oil.

[0010] As a further optimization of this utility model, a first mounting hole is provided on each of the two side walls of the filter tank. A first bearing is fixedly installed in the first mounting hole. The first bearing is used to cooperate with the first rotating rod to realize the rotation operation and to provide stable support and rotation conditions for the first rotating shaft, ensuring that the first rotating shaft can rotate smoothly under the drive of the motor. A mounting base is fixedly installed on the left side wall of the filter tank. The mounting base is used to cooperate with the installation of the motor.

[0011] As a further optimization of this utility model, a set of symmetrical sewage inlets are fixedly installed on the top surface of the sewage pipe, and a valve is fixedly installed between the sewage inlets and the sewage outlet. Opening the valve can discharge the filtered impurities in the filter tank from the sewage outlet and then discharge them into the sewage pipe through the sewage inlet.

[0012] As a further optimization of this utility model, a second mounting hole is provided on the left side wall of the sewage pipe, and a second bearing is fixedly installed in the second mounting hole. The second bearing installed in the second mounting hole is used to cooperate with the second rotating rod to realize the rotation operation and to provide rotation support for the second rotating shaft.

[0013] As a further optimization of this utility model, a coarse filter screen and a fine filter screen are fixedly installed inside the filter tank, with the coarse filter screen located to the left of the fine filter screen. A horizontal plate is also fixedly installed inside the coarse filter screen and the fine filter screen, and a perforation is opened on the side wall of the horizontal plate. After the lubricating oil enters the filter tank from the oil inlet pipe, it first passes through the coarse filter screen to intercept larger impurities, and then passes through the fine filter screen to further filter smaller impurities. This can effectively remove impurities of different sizes in the lubricating oil, improve the filtration effect, and reduce the possibility of impurities entering the heat transfer tube. The horizontal plate and the perforation provide space for the installation and rotation of the first rotating shaft.

[0014] As a further optimization of this utility model, the first rotating shaft passes through the through hole, and first rotating rods are fixedly installed at the left and right ends of the first rotating shaft, respectively. The first rotating rods are inserted and fixedly installed together with the first bearing, and a first pulley is fixedly installed on the outer end wall of the left end of the first rotating rod. The motor is fixedly installed on the outer wall of the mounting base, and the output end of the motor is fixedly installed together with the first pulley. Brush plates are fixedly installed on the outer wall of the first rotating shaft to the left of the coarse and fine filter screens, respectively. Connecting rods are also fixedly installed on the outer wall of the first rotating shaft to the lower left of the brush plates, respectively. An arc-shaped scraper is fixedly installed on the outer end of the rod, which is in close contact with the inner wall of the filter tank. When the motor is turned on, the output end drives the first pulley to rotate, which in turn drives the first rotating shaft to rotate via the first rotating rod. During the rotation of the first rotating shaft, the brush plate cleans the coarse and fine filter screens. The connecting rod on the outer wall of the first rotating shaft drives the scraper to scrape off the impurities attached to the inner wall of the filter tank. This achieves automatic cleaning of the filter screen and the inner wall of the filter tank, preventing impurities from accumulating on the filter screen and the tank wall, ensuring the filtration efficiency of the filter screen and the cleanliness of the filter tank, extending the service life of the filter screen, and reducing the amount of manual cleaning work.

[0015] As a further optimization of this utility model, a second rotating rod is fixedly installed at the left end of the second rotating shaft, and the second rotating rod is inserted and fixedly installed together with the second bearing. A second pulley is fixedly installed on the outer end of the second rotating rod, and a belt is movably installed between the second pulley and the first pulley. Threaded blades are also fixedly installed on the outer wall of the second rotating shaft. When the first pulley rotates, the belt drives the second pulley and the second rotating shaft to rotate, and the threaded blades rotate accordingly. The rotation of the threaded blades can push the impurities in the drain pipe toward the drain outlet, realizing the automatic discharge of impurities in the drain pipe, avoiding blockage of the drain pipe due to impurity accumulation, ensuring smooth drainage, and improving the working stability of the entire heat exchanger.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] I. The filter mechanism is designed with coarse and fine filters installed in the filter tank. This allows for multi-stage filtration of the lubricating oil entering the heat exchanger. The coarse filter first intercepts larger impurities, such as metal shavings, while the fine filter further filters out smaller impurities. This effectively reduces the impurity content in the lubricating oil, lowers the risk of heat transfer tube blockage due to impurity deposits, and ensures the normal operation and service life of the heat exchanger. Because the filter mechanism effectively reduces impurities in the lubricating oil and lowers the possibility of heat transfer tube blockage, the lubricating oil can flow smoothly within the heat transfer tubes, ensuring the effective heat exchange area between the lubricating oil and the cooling medium. This improves the overall heat exchange efficiency of the heat exchanger and allows the lubricating oil to be fully cooled.

[0018] Second, the first pulley is driven by a motor, which in turn drives the first rotating shaft to rotate. This causes the brush plate and scraper fixed on the first rotating shaft to automatically clean the coarse and fine filter screens. The brush plate can remove impurities attached to the surface of the filter screen, while the scraper can scrape off impurities attached to the inner wall of the filter tank. This prevents the filter screen from being affected by the accumulation of impurities, ensuring the continuous and efficient operation of the filtration mechanism. It eliminates the need for frequent manual cleaning of the filter screen, saving manpower and time costs.

[0019] Third, the first pulley drives the second pulley to rotate via a belt, which in turn causes the threaded blades on the second rotating shaft to rotate, automatically discharging impurities from the drain pipe. This automatic drain design can promptly remove impurities generated during the filtration process, prevent the drain pipe from becoming clogged, ensure smooth draining, and further improve the overall stability and reliability of the heat exchanger. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of the tubular heat exchanger of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of the filter tank and drain pipe of this utility model;

[0023] Figure 4 This is a structurally disassembled schematic diagram of the filter feeding mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the overall structure of the fine filter screen of this utility model.

[0025] In the diagram: 1. Shell; 2. Tube sheet; 3. Baffle plate; 4. Heat transfer tube; 5. Tube box; 6. Oil inlet; 7. Oil outlet; 8. Liquid inlet; 9. Liquid outlet; 10. Filtration mechanism; 11. Filter tank; 12. Oil inlet pipe; 13. Oil outlet pipe; 14. Sewage outlet; 15. First mounting hole; 16. First bearing; 17. Mounting base; 18. Sewage pipe; 19. Sewage inlet; 20. Valve; 21. Second mounting hole; 22. Second bearing; 23. Coarse filter screen; 24. Fine filter screen; 25. Horizontal plate; 26. Perforation; 27. First rotating shaft; 28. First rotating rod; 29. ​​Brush plate; 30. Connecting rod; 31. Scraper; 32. First pulley; 33. Motor; 34. Second rotating shaft; 35. Second rotating rod; 36. Threaded blade; 37. Second pulley; 38. Belt. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 - Figure 5 As shown, a heat exchanger for cooling lubricating oil includes a housing 1. A filter mechanism 10 is provided on one side of the housing 1. The filter mechanism 10 includes a filter tank 11, a coarse filter screen 23, a fine filter screen 24, a first rotating shaft 27, a brush plate 29, a first pulley 32, a second rotating shaft 34, threaded blades 36, and a motor 33. A drain pipe 18 is fixedly connected to the bottom surface of the filter tank 11 through a valve 20. The coarse filter screen 23 and the fine filter screen 24 are fixedly connected inside the filter tank 11. The first rotating shaft 27 is flexibly rotated by first rotating rods 28 at both ends. A brush plate 29 is fixedly connected to the outer wall of the first rotating shaft 27 and the second rotating shaft 34 is movably connected to the drain pipe 18 through the second rotating rod 35 at one end, and the threaded blade 36 is fixedly connected to the outer wall of the second rotating shaft 34. The first rotating rod 28 and the second rotating rod 35 are respectively fixedly connected to the first pulley 32 and the second pulley 37, and the first pulley 32 and the second pulley 37 are movably connected to each other through the belt 38. The first pulley 32 is also fixedly connected to the output end of the motor 33.

[0028] like Figure 2 and Figure 3As shown, tube sheets 2 are fixedly installed at both ends of the shell 1, and several baffles 3 are fixedly installed on the inner wall of the tube sheets 2. Several heat transfer tubes 4 are fixedly installed between the tube sheets 2 and pass through the baffles 3. Tube boxes 5 are fixedly installed on the outer wall of the tube sheets 2. An oil inlet 6 is fixedly installed on the outer wall of the left tube box 5, and an oil outlet 7 is fixedly installed on the outer wall of the right tube box 5. An inlet 8 and a outlet 9 are also fixedly installed on the outer wall of the shell 1. An oil inlet pipe 12 is fixedly installed on one side of the top of the outer wall of the filter tank 11, and an oil outlet pipe 13 is fixedly installed on the bottom of the right side wall of the filter tank 11. The oil outlet pipe 13 is fixedly installed together with the inlet 6. A set of symmetrical drain ports 14 are also fixedly installed on the bottom surface of the filter tank 11. The lubricating oil filtered by the filter tank 11 can be cooled by a tubular heat exchanger according to the heat exchange principle.

[0029] like Figure 3 As shown, first mounting holes 15 are respectively opened on the two side walls of the filter tank 11. A first bearing 16 is fixedly installed in the first mounting hole 15. The first bearing 16 in the first mounting hole 15 is used to cooperate with the first rotating rod 28 to achieve rotation. A mounting base 17 is fixedly installed on the left side wall of the filter tank 11.

[0030] like Figure 3 As shown, a set of symmetrical inlets 19 are fixedly installed on the top surface of the drain pipe 18, and a valve 20 is fixedly installed between the inlets 19 and the outlet 14. Opening the valve can discharge the impurities filtered in the filter tank 11 into the drain pipe 18.

[0031] like Figure 3 As shown, a second mounting hole 21 is provided on the left side wall of the sewage pipe 18, and a second bearing 22 is fixedly installed in the second mounting hole 21. The second bearing 22 in the second mounting hole 21 is used to cooperate with the second rotating rod 35 to realize the rotation operation.

[0032] like Figure 4 and Figure 5 As shown, a coarse filter screen 23 and a fine filter screen 24 are fixedly installed inside the filter tank 11, with the coarse filter screen 23 located to the left of the fine filter screen 24. A horizontal plate 25 is also fixedly installed inside the coarse filter screen 23 and the fine filter screen 24, and a perforation 26 is provided on the side wall of the horizontal plate 25. The coarse filter screen 23 and the fine filter screen 24 can effectively filter large or small impurities in the lubricating oil, and the coarse filter screen 23 and the fine filter screen 24 can withstand high pressure.

[0033] like Figure 4As shown, a first rotating shaft 27 passes through a through hole 26, and first rotating rods 28 are fixedly installed at both ends of the first rotating shaft 27. The first rotating rods 28 are inserted and fixedly installed together with the first bearing 16. A first pulley 32 is fixedly installed on the outer end wall of the left end of the first rotating rod 28. A motor 33 is fixedly installed on the outer wall of the mounting base 17, and the output end of the motor 33 is fixedly installed together with the first pulley 32. Brush plates 29 are fixedly installed on the outer wall of the first rotating shaft 27, to the left of the coarse filter screen 23 and the fine filter screen 24, respectively. Connecting rods 30 are fixedly installed on the outer wall of the first rotating shaft 27 and at the lower left of the brush plate 29. An arc-shaped scraper 31 that is in close contact with the inner wall of the filter tank 11 is fixedly installed on the outer end of the connecting rod 30. After the motor 33 is turned on and the output end drives the first rotating rod 28 through the first pulley 32 to rotate the first rotating shaft 27, the high-temperature resistant brush plate 29 can be used to clean the coarse filter screen 23 and the fine filter screen 24 to prevent clogging and affect the filtration effect. The connecting rod 30 will drive the scraper 31 to rotate and scrape off the impurities attached to the inner wall of this section of the filter tank 11.

[0034] like Figure 4 As shown, a second rotating rod 35 is fixedly installed on the left end of the second rotating shaft 34, and the second rotating rod 35 is inserted and fixedly installed together with the second bearing 22. A second pulley 37 is fixedly installed on the outer end of the second rotating rod 35, and a belt 38 is movably installed between the second pulley 37 and the first pulley 32. A threaded blade 36 is also fixedly installed on the outer wall of the second rotating shaft 34. The belt 38 will drive the second pulley 37 to rotate the second rotating shaft 34 through the second rotating rod 35. The second rotating shaft 34 will drive the threaded blade 36 to rotate and push the impurities in the drain pipe 18 to the outside, ensuring the smoothness of the drain and preventing the drain pipe 18 from becoming blocked. Example 1:

[0035] When the high-temperature lubricating oil enters the filter tank 11 through the oil inlet pipe 12, it passes through the coarse filter screen 23 installed inside the filter tank 11. At this time, the coarse filter screen 23 will filter and intercept larger impurities in the high-temperature lubricating oil, and the impurities will be intercepted and filtered in the left part of the coarse filter screen 23. Immediately afterwards, after passing through the coarse filter screen 23, the high-temperature lubricating oil passes through the fine filter screen 24 to the right of the coarse filter screen 23. The fine filter screen 24 will further filter and intercept smaller impurities in the high-temperature lubricating oil, and the impurities will be intercepted and filtered in the left part of the fine filter screen 24. At this time, the effective The reduction of impurities in the high-temperature lubricating oil lowers the risk of heat transfer tube blockage due to impurity deposition, ensuring the normal operation and service life of the heat exchanger. By effectively reducing impurities in the high-temperature lubricating oil, the possibility of heat transfer tube blockage is reduced, allowing the high-temperature lubricating oil to flow smoothly in the heat transfer tube 4, ensuring the effective heat exchange area between the high-temperature lubricating oil and the cooling medium, thereby improving the overall heat exchange efficiency of the heat exchanger and enabling the high-temperature lubricating oil to be fully cooled. After being filtered by the fine filter screen 24, the high-temperature lubricating oil will be discharged into the tubular heat exchanger through the oil outlet pipe 13. Example 2:

[0036] The principle of the tubular heat exchanger used for lubricating oil cooling is as follows: The high-temperature lubricating oil that needs to be cooled enters from the oil inlet 6 on the outer wall of the left end tube box 5. Under the guidance of the tube box 5, it is evenly distributed into several heat transfer tubes 4 that are fixedly installed between the tube sheets 2 and pass through the baffles 3. At this time, the lubricating oil carries a large amount of heat due to the heat generated by the operation of the mechanical equipment. The cooling medium enters the interior of the shell 1 from the liquid inlet 8 on the outer wall of the shell 1. It is blocked and guided by several baffles 3 fixedly installed on the inner wall of the tube sheet 2 and flows along a tortuous path in the shell, increasing the residence time and flow distance. Due to the temperature difference between the high-temperature lubricating oil in the heat transfer tubes 4 and the low-temperature cooling medium in the shell 1, the heat is transferred from the lubricating oil side to the cooling medium side through the tube wall of the heat transfer tubes 4, which has good thermal conductivity. After heat exchange, the lubricating oil with a lower temperature flows out from the oil outlet 7 on the outer wall of the right end tube box 5 and returns to the mechanical equipment, while the cooling medium with a higher temperature due to absorbing heat is discharged from the liquid outlet 9 on the outer wall of the shell 1. This achieves heat exchange and cooling of the high-temperature lubricating oil. Example 3:

[0037] To ensure the continued filtration effect of the coarse filter 23 and fine filter 24 in the filter mechanism 10 on high-temperature lubricating oil after prolonged use, valve 20 is opened and motor 33, installed on the outer wall of mounting base 17 on the left side wall of filter tank 11, is turned on. Motor 33 drives the hand output end to rotate the first pulley 32. The first pulley 32 drives the first rotating rods 28 at both ends of the first rotating shaft 27 to rotate within the first bearings 16 installed in the first mounting holes 15 on both sides of the filter tank 11. Because the first rotating shaft 27 passes through the perforations 26 on the side walls of the horizontal plates 25 installed in the coarse filter 23 and fine filter 24, normal rotation of the first rotating shaft 27 can be ensured. During the rotation, the first rotating shaft 27 drives the brush plates 29 installed on the outer wall to respectively... The coarse filter screen 23 and the fine filter screen 24 are cleaned to remove the impurities attached to them, preventing the mesh of the coarse filter screen 23 and the fine filter screen 24 from being clogged by impurities. At the same time, the first rotating shaft 27 will also drive the connecting rod 30 to rotate, so that the connecting rod 30 drives the scraper 31 to rotate closely against the inner wall of the filter tank 11 during the rotation, and scrapes off the impurities attached to the inner wall of the filter tank 11 in the section where impurities are filtered. After cleaning and scraping, the impurities will be discharged through the drain port 14 on the bottom surface of the filter tank 11 and discharged into the drain pipe 18 through the inlet port 19, avoiding the filtration effect affected by the accumulation of impurities, ensuring the continuous and efficient operation of the filtration mechanism 10, eliminating the need for frequent manual cleaning of the filter screen, and saving manpower and time costs. Example 4:

[0038] When impurities are discharged into the drain pipe 18, the first pulley 32 will drive the second pulley 37 to rotate via the belt 38 during its rotation. The second pulley 37 will drive the second rotating rod 35 at one end of the second rotating shaft 34 to rotate in the second bearing 22 installed in the second mounting hole 21 on the left side of the drain pipe 18. This will cause the second rotating rod 35 to drive the second rotating shaft 34 to rotate. The second rotating shaft 34 will drive the threaded blades 36 on the outer wall. As the threaded blades 36 continue to rotate, the impurities in the drain pipe 18 will be discharged. This will promptly remove the impurities generated during the filtration process, prevent the drain pipe from becoming clogged, ensure the smooth operation of the drain process, and further improve the working stability and reliability of the entire heat exchanger.

[0039] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. A heat exchanger for the cooling of lubricating oil, comprising a housing (1), characterised in that: The shell (1) is provided with a filter mechanism (10) on one side, and the filter mechanism (10) comprises a filter tank (11), a coarse filter screen (23), a fine filter screen (24), a first rotating shaft (27), a brush plate (29), a first belt pulley (32), a second rotating shaft (34), a threaded blade (36) and a motor (33), the bottom surface of the filter tank (11) is fixedly connected with a blowdown pipe (18) through a valve (20), and the inside of the filter tank (11) is fixedly connected with the coarse filter screen (23) and the fine filter screen (24), the first rotating shaft (27) is movably connected in the filter tank (11) through two end first rotating rods (28), and the outer wall of the first rotating shaft (27) is fixedly connected with the brush plate (29), the second rotating shaft (34) is movably connected in the blowdown pipe (18) through a second rotating rod (35) at one end, and the threaded blade (36) is fixedly connected to the outer wall of the second rotating shaft (34), one end of the first rotating rod (28) and the second rotating rod (35) is fixedly connected with the first belt pulley (32) and the second belt pulley (37) respectively, and the first belt pulley (32) and the second belt pulley (37) are movably connected through a belt (38), and the first belt pulley (32) is further fixedly connected with the output end of the motor (33).

2. A heat exchanger for lubricating oil cooling according to claim 1, characterized in that: The shell (1) is provided with a filter mechanism (10) on one side, and the filter mechanism (10) comprises a filter tank (11), a coarse filter screen (23), a fine filter screen (24), a first rotating shaft (27), a brush plate (29), a first belt pulley (32), a second rotating shaft (34), a threaded blade (36) and a motor (33), the bottom surface of the filter tank (11) is fixedly connected with a blowdown pipe (18) through a valve (20), and the inside of the filter tank (11) is fixedly connected with the coarse filter screen (23) and the fine filter screen (24), the first rotating shaft (27) is movably connected in the filter tank (11) through two end first rotating rods (28), and the outer wall of the first rotating shaft (27) is fixedly connected with the brush plate (29), the second rotating shaft (34) is movably connected in the blowdown pipe (18) through a second rotating rod (35) at one end, and the threaded blade (36) is fixedly connected to the outer wall of the second rotating shaft (34), one end of the first rotating rod (28) and the second rotating rod (35) is fixedly connected with the first belt pulley (32) and the second belt pulley (37) respectively, and the first belt pulley (32) and the second belt pulley (37) are movably connected through a belt (38), and the first belt pulley (32) is further fixedly connected with the output end of the motor (33).

3. A heat exchanger for lubricating oil cooling according to claim 2, characterized in that: The shell (1) is provided with a filter mechanism (10) on one side, and the filter mechanism (10) comprises a filter tank (11), a coarse filter screen (23), a fine filter screen (24), a first rotating shaft (27), a brush plate (29), a first belt pulley (32), a second rotating shaft (34), a threaded blade (36) and a motor (33), the bottom surface of the filter tank (11) is fixedly connected with a blowdown pipe (18) through a valve (20), and the inside of the filter tank (11) is fixedly connected with the coarse filter screen (23) and the fine filter screen (24), the first rotating shaft (27) is movably connected in the filter tank (11) through two end first rotating rods (28), and the outer wall of the first rotating shaft (27) is fixedly connected with the brush plate (29), the second rotating shaft (34) is movably connected in the blowdown pipe (18) through a second rotating rod (35) at one end, and the threaded blade (36) is fixedly connected to the outer wall of the second rotating shaft (34), one end of the first rotating rod (28) and the second rotating rod (35) is fixedly connected with the first belt pulley (32) and the second belt pulley (37) respectively, and the first belt pulley (32) and the second belt pulley (37) are movably connected through a belt (38), and the first belt pulley (32) is further fixedly connected with the output end of the motor (33).

4. A heat exchanger for lubricating oil cooling according to claim 3, characterized in that: The shell (1) is provided with a filter mechanism (10) on one side, and the filter mechanism (10) comprises a filter tank (11), a coarse filter screen (23), a fine filter screen (24), a first rotating shaft (27), a brush plate (29), a first belt pulley (32), a second rotating shaft (34), a threaded blade (36) and a motor (33), the bottom surface of the filter tank (11) is fixedly connected with a blowdown pipe (18) through a valve (20), and the inside of the filter tank (11) is fixedly connected with the coarse filter screen (23) and the fine filter screen (24), the first rotating shaft (27) is movably connected in the filter tank (11) through two end first rotating rods (28), and the outer wall of the first rotating shaft (27) is fixedly connected with the brush plate (29), the second rotating shaft (34) is movably connected in the blowdown pipe (18) through a second rotating rod (35) at one end, and the threaded blade (36) is fixedly connected to the outer wall of the second rotating shaft (34), one end of the first rotating rod (28) and the second rotating rod (35) is fixedly connected with the first belt pulley (32) and the second belt pulley (37) respectively, and the first belt pulley (32) and the second belt pulley (37) are movably connected through a belt (38), and the first belt pulley (32) is further fixedly connected with the output end of the motor (33).

5. A heat exchanger for lubricating oil cooling according to claim 4, characterized in that: ​ 6. A heat exchanger for lubricating oil cooling according to claim 5, characterized in that: The filter tank (11) is internally fixedly installed with a coarse filter screen (23) and a fine filter screen (24), and the coarse filter screen (23) is located left of the fine filter screen (24), and the inside of the coarse filter screen (23) and the fine filter screen (24) is further fixedly installed with a horizontal plate (25), and the side wall of the horizontal plate (25) is provided with a perforation (26).

7. A heat exchanger for lubricating oil cooling according to claim 6, characterized in that: The first rotating shaft (27) passes through the perforation (26), and the left and right ends of the first rotating shaft (27) are fixedly installed with first rotating rods (28), the first rotating rods (28) and the first bearing (16) are fixedly installed together, the outer end wall of the left end first rotating rod (28) is fixedly installed with a first belt pulley (32), the motor (33) is fixedly installed on the outer side wall of the mounting seat (17), the output end of the motor (33) and the first belt pulley (32) are fixedly installed together, the outer wall of the first rotating shaft (27) and left of the coarse filter screen (23) and the fine filter screen (24) are fixedly installed with brush plates (29), and the outer wall of the first rotating shaft (27) and left below the brush plates (29) are further fixedly installed with connecting rods (30), the outer side end of the connecting rod (30) is fixedly installed with an arc-shaped scraper (31) which is close to the inner wall of the filter tank (11).

8. A heat exchanger for lubricating oil cooling according to claim 7, characterized in that: The left end of the second rotating shaft (34) is fixedly installed with a second rotating rod (35), and the second rotating rod (35) and the second bearing (22) are fixedly installed together, the outer side end of the second rotating rod (35) is fixedly installed with a second belt pulley (37), and the second belt pulley (37) and the first belt pulley (32) are movably installed with a belt (38), and the outer wall of the second rotating shaft (34) is further fixedly installed with a threaded blade (36).

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