A gear oil pump assembly

Abstract

The present invention discloses a gear oil pump assembly, which relates to the field of gear oil pump assemblies and includes a base, a water tank, and a main oil pump body. The water tank and the main oil pump body are both fixedly installed on the upper surface of the base. The upper surface of the water tank is provided with a first output oil pump and a second output oil pump arranged in parallel. In the present invention, through the structural design among the main oil pump body, the water tank, the first output oil pump, and the second output oil pump, the oil conveyed by one main oil pump body can be conveyed into the first output oil pump or the second output oil pump. After the oil enters the first chamber inside the first output oil pump and the second output oil pump, it pushes the power piece to rotate, causing the driving shaft to rotate. When the driving shaft rotates, the corresponding first output shaft and second output shaft can rotate. This gear oil pump assembly can complete the transmission of a single shaft and a double shaft by the driving action of a group of motors, increasing the applicable range of the gear oil pump assembly.

Description

Technical Field

[0001] The present invention relates to the field of gear oil pump assemblies, and particularly to a gear oil pump assembly. Background Art

[0002] In many mechanical transmissions, the oil pump gear power piece of the gear oil pump is driven to rotate by hydraulic oil, thereby driving the drive shaft to rotate. This driving method enables the oil pump gear power piece to always have the lubrication and cooling of hydraulic oil, which can increase the single use time and service life of the gear oil pump assembly.

[0003] However, it has the following disadvantages:

[0004] 1. The hydraulic oil drives a set of drive shafts to rotate, and the application range is small;

[0005] 2. The particulate impurities generated during the recycling of hydraulic oil are likely to damage the internal structure of the gear oil pump assembly, and the overall service life of the gear oil pump assembly is relatively short.

[0006] Therefore, it is necessary to invent a gear oil pump assembly to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a gear oil pump assembly to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solution: A gear oil pump assembly includes a base, a water tank, and a main oil pump body. The water tank and the main oil pump body are both fixedly installed on the upper surface of the base. The upper surface of the water tank is provided with a first output oil pump and a second output oil pump arranged in parallel. The main oil pump body has two sets of first pipelines and one set of second pipelines. Two oil filter cores are connected and arranged on one side of the water tank. Third pipelines are provided on both of the two oil filter cores. The third pipelines are connected to the corresponding first pipelines through pipelines. Secondary filter cylinders are arranged on the sides of the first output oil pump and the second output oil pump. The first output oil pump, the second output oil pump and the corresponding secondary filter cylinders are connected through oil outlet pipelines. One end of each of the first output oil pump and the second output oil pump is provided with a return pipeline, and the return pipeline is connected to the inside of the water tank. A first output shaft is provided at the upper end of the first output oil pump, and a second output shaft is provided at the upper end of the second output oil pump. An inverted U-shaped pipeline is further provided above the water tank. An oil inlet pipeline is provided on one side of the secondary filter cylinder. An end connecting pipe is connected in the middle of the inverted U-shaped pipeline. The end connecting pipe is connected to the second pipeline through a pipeline. The two ends of the inverted U-shaped pipeline are respectively connected to two sets of corresponding oil inlet pipelines. The oil inlet pipeline and the end of the inverted U-shaped pipeline are fixed through a threaded pipeline. A motor is fixedly installed at the upper end of the main oil pump body. The oil pump gear power piece connected to the rotating shaft of the motor is located inside the main oil pump body. An electromagnetic valve is provided in the oil inlet pipeline.

[0009] Preferably, a first chamber is provided inside each of the first output oil pump and the second output oil pump. A driving shaft and a power piece are arranged in the first chamber. The driving shaft is fixedly welded to the lower end of the corresponding first output shaft or second output shaft, and the driving shaft is coaxial with the corresponding first output shaft or second output shaft. The power piece is fixedly welded to the outer ring of the driving shaft.

[0010] In the present invention, through the structural design among the main oil pump body, the water tank, the first output oil pump, and the second output oil pump, the oil transported by one main oil pump body can be transported into the first output oil pump or the second output oil pump. After the oil enters the first chamber inside the first output oil pump and the second output oil pump, it pushes the power piece to rotate, causing the driving shaft to rotate. When the driving shaft rotates, the corresponding first output shaft and second output shaft can rotate. This gear oil pump assembly can complete the transmission of a single shaft and a double shaft by the driving action of a set of motors, increasing the applicable range of the gear oil pump assembly.

[0011] When rotating uniaxially, it is divided into the uniaxial rotation of the first output shaft and the uniaxial rotation of the second output shaft. Open the solenoid valve in the oil inlet pipe near the first output oil pump. The motor drives the oil pump gear power piece on its rotating shaft to rotate, generating suction. The oil in the water tank is successively sucked through the oil filter element, the third pipe, the first pipe, and then the oil is successively transported through the second pipe, the end connecting pipe, the U-shaped pipe, the threaded pipe, the oil inlet pipe, the secondary filter cartridge, and the oil outlet pipe into the first chamber inside the first output oil pump. The oil entering the first chamber pushes the power piece to rotate, causing the first output shaft to rotate.

[0012] Open the solenoid valve in the oil inlet pipe near the second output oil pump. The motor drives the oil pump gear power piece on its rotating shaft to rotate, generating suction. The oil in the water tank is successively sucked through the oil filter element, the third pipe, the first pipe, and then the oil is successively transported through the second pipe, the end connecting pipe, the U-shaped pipe, the threaded pipe, the oil inlet pipe, the secondary filter cartridge, and the oil outlet pipe into the first chamber inside the second output oil pump. The oil entering the first chamber pushes the power piece to rotate, causing the second output shaft to rotate.

[0013] When rotating biaxially, open the solenoid valves in the two oil inlet pipes simultaneously. The motor drives the oil pump gear power piece on its rotating shaft to rotate, generating suction. The oil in the water tank is successively sucked through the oil filter element, the third pipe, the first pipe, and then the oil is successively transported through the second pipe, the end connecting pipe, the U-shaped pipe, the threaded pipe, the oil inlet pipe, the secondary filter cartridge, and the oil outlet pipe into the first chambers inside the second output oil pump and the first output oil pump. The oil entering the first chambers pushes the power pieces to rotate, causing the second output shaft and the first output shaft to rotate simultaneously.

[0014] Preferably, a second chamber is provided inside the secondary filter cartridge, and a filter screen is provided at the position where the oil outlet pipe communicates with the second chamber.

[0015] It should be noted that both the third pipe and the oil filter element use common oil filters, which can initially filter the oil output from the water tank. The filtered oil then enters the inside of the main oil pump body, increasing the service life of the equipment.

[0016] In the above gear oil pump assembly, the solenoid valve in the oil inlet pipe, the pipe connecting between the first pipe and the third pipe, the pipe connecting between the second pipe and the end connecting pipe, the rotating shaft on the motor, and the oil pump gear power piece on the rotating shaft are not shown in the figure.

[0017] Among them, when the oil enters the second chamber inside the secondary filter cartridge, it will be further filtered through the filter screen.

[0018] Preferably, a rotating cleaning shaft is rotatably connected to the middle of the filter screen, and a rotating cleaning plate is fixedly arranged on the rotating cleaning shaft. The rotating cleaning plate is movably arranged inside the second chamber.

[0019] When the oil enters the second chamber, it will push the rotating cleaning plate to rotate, so that the surface of the filter screen is not easy to accumulate particulate impurities and cause blockage, ensuring the filtering effect of the filter screen on the oil.

[0020] Preferably, a collection chamber is further arranged inside the secondary filter cylinder. The collection chamber is located on one side of the second chamber, and the upper end of the collection chamber is communicated with the upper end of the second chamber.

[0021] Furthermore, the particulate impurities filtered by the filter screen are collected in the second chamber. When the rotating cleaning plate rotates, it can also drive the particulate impurities to flow in the oil and move upward into the collection chamber for collection, avoiding the phenomenon that a large amount of particulate impurities accumulate in the second chamber and affect the filtering effect and the oil flow area at the filter screen.

[0022] Preferably, the upper end of the second chamber penetrates through the upper surface of the secondary filter cylinder, and the position where the second chamber penetrates through the upper surface of the secondary filter cylinder is sealed with a sealing plug.

[0023] Among them, when the sealing plug on the secondary filter cylinder is opened, the particulate impurities in the second chamber can be cleaned from the upper end of the second chamber.

[0024] Preferably, a cotton bag is arranged below the sealing plug and is located in the collection chamber and is used for collecting impurities in the collection chamber.

[0025] Furthermore, the particulate impurities entering the collection chamber are collected in the cotton bag, which is convenient for cleaning.

[0026] Preferably, a connecting plate is fixedly arranged on the lower surface of the sealing plug. The connecting plate is located at the position where the second chamber is communicated with the collection chamber. The upper end of the cotton bag is fixedly arranged on the connecting plate. An opening is arranged at the upper end of the cotton bag, and an inlet corresponding to the opening is arranged on the connecting plate.

[0027] When the particulate impurities enter the collection chamber, they can just open the opening of the cotton bag through the inlet and thus be collected inside the cotton bag. When the sealing plug is taken out, the cotton bag can be taken out synchronously, achieving the purpose of facilitating the cleaning of impurities.

[0028] Preferably, rectangular plates are fixedly welded to the bottoms of the first output oil pump and the second output oil pump. The rectangular plates are fixedly installed on the upper surface of the water tank by screws.

[0029] Among them, both the first output oil pump and the second output oil pump are detachably connected to the water tank, which is convenient for disassembly, assembly and maintenance.

[0030] The technical effects and advantages of the present invention:

[0031] 1. A gear oil pump assembly of the present invention includes a base, a water tank, and a main oil pump body. The water tank and the main oil pump body are both fixedly installed on the upper surface of the base. The upper surface of the water tank is provided with a first output oil pump and a second output oil pump distributed in parallel. The main oil pump body has two groups of first pipelines and one group of second pipelines. Two oil filter cores are communicated and arranged on one side of the water tank. Through the structural design among the main oil pump body, the water tank, the first output oil pump, and the second output oil pump in the present invention, the oil transported by one main oil pump body can be transported into the first output oil pump or the second output oil pump. After the oil enters the first chamber inside the first output oil pump and the second output oil pump, it pushes the power piece to rotate, causing the driving shaft to rotate. When the driving shaft rotates, the corresponding first output shaft and second output shaft can rotate. This gear oil pump assembly can complete the transmission of a single shaft and a double shaft by the driving action of a group of motors, increasing the application range of the gear oil pump assembly;

[0032] 2. In a gear oil pump assembly of the present invention, when the oil enters the second chamber, it will push the rotating cleaning plate to rotate, so that the surface of the filter screen is not likely to accumulate particulate impurities and cause blockage, ensuring the filtering effect of the filter screen on the oil;

[0033] 3. In a gear oil pump assembly of the present invention, the particulate impurities filtered by the filter screen are collected in the second chamber. When the rotating cleaning plate rotates, it can also drive the particulate impurities to flow in the oil and move upward to the collection chamber for collection, avoiding the phenomenon that a large amount of particulate impurities accumulate in the second chamber and affect the filtering effect at the filter screen and the oil flow area;

[0034] 4. In a gear oil pump assembly of the present invention, when the sealing plug on the secondary filter cylinder is opened, the particulate impurities in the second chamber can be cleaned from the upper end of the second chamber. When the particulate impurities enter the collection chamber, they can just open the opening of the cotton bag through the inlet, so as to be collected inside the cotton bag. When the sealing plug is taken out, the cotton bag can be taken out synchronously, achieving the purpose of facilitating the cleaning of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of the gear oil pump assembly of the present invention.

[0036] Figure 2 It is a schematic internal structure diagram of the first output oil pump of the present invention.

[0037] Figure 3 It is a schematic internal structure diagram of the secondary filter cylinder of the present invention.

[0038] In the figure: base 1, water tank 2, main oil pump body 3, first pipeline 4, third pipeline 5, oil filter element 6, second pipeline 7, end connecting pipe 8, U-shaped pipeline 9, threaded pipeline 10, secondary filter cartridge 11, oil inlet pipeline 12, first output oil pump 13, oil outlet pipeline 14, first output shaft 15, second output oil pump 16, second output shaft 17, motor 18, return pipeline 19, first chamber 20, sealing plug 21, second chamber 22, driving shaft 23, power plate 24, connecting plate 25, inlet 26, cotton bag 27, collection chamber 28, rotating cleaning plate 29, rotating cleaning shaft 30, filter screen 31. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0040] The present invention provides a Figures 1-3 gear oil pump assembly as shown, including a base 1, a water tank 2, and a main oil pump body 3. The water tank 2 and the main oil pump body 3 are both fixedly installed on the upper surface of the base 1. The upper surface of the water tank 2 is provided with a first output oil pump 13 and a second output oil pump 16 arranged in parallel. The main oil pump body 3 has two groups of first pipelines 4 and one group of second pipelines 7. One side of the water tank 2 is communicatively provided with two oil filter elements 6. Each of the two oil filter elements 6 is provided with a third pipeline 5. The third pipeline 5 is communicatively connected to the corresponding first pipeline 4 through a pipeline. The sides of the first output oil pump 13 and the second output oil pump 16 are both provided with secondary filter cartridges 11. The first output oil pump 13, the second output oil pump 16 and the corresponding secondary filter cartridges 11 are communicatively connected through an oil outlet pipeline 14. One end of each of the first output oil pump 13 and the second output oil pump 16 is provided with a return pipeline 19. The return pipeline 19 is communicatively connected to the inside of the water tank 2. The upper end of the first output oil pump 13 is provided with a first output shaft 15, and the upper end of the second output oil pump 16 is provided with a second output shaft 17. An U-shaped pipeline 9 is further provided above the water tank 2. One side of the secondary filter cartridge 11 is provided with an oil inlet pipeline 12. The middle of the U-shaped pipeline 9 is communicatively provided with an end connecting pipe 8. The end connecting pipe 8 is communicatively connected to the second pipeline 7 through a pipeline. The two ends of the U-shaped pipeline 9 are respectively communicatively connected to two groups of corresponding oil inlet pipelines 12. The oil inlet pipeline 12 and the end of the U-shaped pipeline 9 are fixed through a threaded pipeline 10. The upper end of the main oil pump body 3 is fixedly installed with a motor 18. The oil pump gear power plate connected to the rotating shaft of the motor 18 is located inside the main oil pump body 3. An electromagnetic valve is provided in the oil inlet pipeline 12.

[0041] Inside both the first output oil pump 13 and the second output oil pump 16, a first chamber 20 is provided. Inside the first chamber 20, a driving shaft 23 and a power piece 24 are provided. The driving shaft 23 is fixedly welded to the lower end of the corresponding first output shaft 15 or the second output shaft 17, and the driving shaft 23 is coaxial with the corresponding first output shaft 15 or the second output shaft 17. The power piece 24 is fixedly welded to the outer circumference of the driving shaft 23.

[0042] In the present invention, through the structural design among the main oil pump body 3, the water tank 2, the first output oil pump 13, and the second output oil pump 16, the oil conveyed by one main oil pump body 3 can be conveyed into the inside of the first output oil pump 13 or the second output oil pump 16. After the oil enters the first chamber 20 inside the first output oil pump 13 and the second output oil pump 16, it pushes the power piece 24 to rotate, causing the driving shaft 23 to rotate. When the driving shaft 23 rotates, the corresponding first output shaft 15 and the second output shaft 17 can rotate. This gear oil pump assembly can utilize the driving effect of a set of motors 18 to complete the transmission of a single shaft and a double shaft, increasing the applicable range of the gear oil pump assembly.

[0043] When rotating a single shaft, it is divided into the single - shaft rotation of the first output shaft 15 and the single - shaft rotation of the second output shaft 17. Open the solenoid valve in the oil inlet pipe 12 near the first output oil pump 13. The motor 18 drives the oil pump gear power piece on its rotating shaft to generate suction. The oil in the water tank 2 is successively sucked through the oil filter element 6, the third pipe 5, the first pipe 4, and then the oil is successively conveyed through the second pipe 7, the end connecting pipe 8, the U - shaped pipe 9, the threaded pipe 10, the oil inlet pipe 12, the secondary filter cylinder 11, and the oil outlet pipe 14 into the first chamber 20 inside the first output oil pump 13. The oil entering the first chamber 20 pushes the power piece 24 to rotate, causing the first output shaft 15 to rotate.

[0044] Open the solenoid valve in the oil inlet pipe 12 near the second output oil pump 16. The motor 18 drives the oil pump gear power piece on its rotating shaft to generate suction. The oil in the water tank 2 is successively sucked through the oil filter element 6, the third pipe 5, the first pipe 4, and then the oil is successively conveyed through the second pipe 7, the end connecting pipe 8, the U - shaped pipe 9, the threaded pipe 10, the oil inlet pipe 12, the secondary filter cylinder 11, and the oil outlet pipe 14 into the first chamber 20 inside the second output oil pump 16. The oil entering the first chamber 20 pushes the power piece 24 to rotate, causing the second output shaft 17 to rotate.

[0045] When rotating in two axes, the solenoid valves in the two oil inlet pipes 12 are opened simultaneously. The motor 18 drives the oil pump gear power piece on its rotating shaft to rotate, generating suction. The oil in the water tank 2 is successively sucked through the oil filter element 6, the third pipe 5, and the first pipe 4, and then the oil is successively transported through the second pipe 7, the end connecting pipe 8, the U-shaped pipe 9, the threaded pipe 10, the oil inlet pipe 12, the secondary filter cartridge 11, and the oil outlet pipe 14 to the first chamber 20 inside the second output oil pump 16 and the first output oil pump 13. The oil entering the first chamber 20 pushes the power piece 24 to rotate, causing the second output shaft 17 and the first output shaft 15 to rotate simultaneously.

[0046] A second chamber 22 is provided inside the secondary filter cartridge 11, and a filter screen 31 is provided at the position where the oil outlet pipe 14 communicates with the second chamber 22.

[0047] It should be noted that both the third pipe 5 and the oil filter element 6 use common oil filters, which can initially filter the oil output from the water tank 2. The filtered oil then enters the inside of the main oil pump body 3, increasing the service life of the equipment.

[0048] In the above gear oil pump assembly, the solenoid valve in the oil inlet pipe 12, the pipe connecting the first pipe 4 and the third pipe 5, the pipe connecting the second pipe 7 and the end connecting pipe 8, the rotating shaft on the motor 18, and the oil pump gear power piece on the rotating shaft are not shown in the figure.

[0049] Among them, when the oil enters the second chamber 22 inside the secondary filter cartridge 11, it will be further filtered through the filter screen 31.

[0050] The middle of the filter screen 31 is rotatably connected to a rotating cleaning shaft 30. A rotating cleaning plate 29 is fixedly provided on the rotating cleaning shaft 30, and the rotating cleaning plate 29 is movably arranged inside the second chamber 22.

[0051] When the oil enters the second chamber 22, it will push the rotating cleaning plate 29 to rotate, so that the surface of the filter screen 31 is not likely to accumulate particulate impurities and cause blockage, ensuring the filtering effect of the filter screen 31 on the oil.

[0052] A collection chamber 28 is also provided inside the secondary filter cartridge 11. The collection chamber 28 is located on one side of the second chamber 22, and the upper end of the collection chamber 28 is communicated with the upper end of the second chamber 22.

[0053] Furthermore, the particulate impurities filtered out by the filter screen 31 are collected in the second chamber 22. When the rotating cleaning plate 29 rotates, it can also drive the particulate impurities to flow in the oil and move upward to the collection chamber 28 for collection, avoiding the phenomenon that a large amount of particulate impurities accumulate in the second chamber 22 and affect the filtering effect and the oil flow area at the filter screen 31.

[0054] The upper end of the second chamber 22 penetrates through the upper surface of the secondary filter cartridge 11, and the position where the second chamber 22 penetrates through the upper surface of the secondary filter cartridge 11 is sealed with a sealing plug 21.

[0055] Among them, when the sealing plug 21 on the secondary filter cartridge 11 is opened, the particulate impurities in the second chamber 22 can be cleaned from the upper end of the second chamber 22.

[0056] Below the sealing plug 21, there is a cotton bag 27 located in the collection chamber 28 and used to collect impurities in the collection chamber 28.

[0057] Furthermore, the particulate impurities entering the collection chamber 28 are collected in the cotton bag 27, which is convenient for cleaning.

[0058] The lower surface of the sealing plug 21 is fixedly provided with a connecting plate 25. The connecting plate 25 is located at the position where the second chamber 22 communicates with the collection chamber 28. The upper end of the cotton bag 27 is fixedly arranged on the connecting plate 25. The upper end of the cotton bag 27 is provided with an opening, and the connecting plate 25 is provided with an inlet 26 corresponding to the opening.

[0059] When the particulate impurities enter the collection chamber 28, they can just open the opening of the cotton bag 27 through the inlet 26, and thus are collected inside the cotton bag 27. When the sealing plug 21 is taken out, the cotton bag 27 can be taken out synchronously, achieving the purpose of facilitating the cleaning of impurities.

[0060] Rectangular plates are fixedly welded to the bottoms of the first output oil pump 13 and the second output oil pump 16, and the rectangular plates are fixedly installed on the upper surface of the water tank 2 through screws.

[0061] Among them, both the first output oil pump 13 and the second output oil pump 16 are detachably connected to the water tank 2, which is convenient for disassembly, assembly and maintenance.

[0062] Working principle: In the present invention, through the structural design among the main oil pump body 3, the water tank 2, the first output oil pump 13 and the second output oil pump 16, the oil transported by one main oil pump body 3 can be transported into the interior of the first output oil pump 13 or the second output oil pump 16. After the oil enters the first chamber 20 inside the first output oil pump 13 and the second output oil pump 16, it pushes the power piece 24 to rotate, so that the driving shaft 23 rotates. When the driving shaft 23 rotates, the corresponding first output shaft 15 and the second output shaft 17 can rotate. This gear oil pump assembly can complete the single-shaft and double-shaft transmissions by the driving action of a set of motors 18, increasing the application range of the gear oil pump assembly.

Claims

1. A gear oil pump assembly, comprising a base (1), a water tank (2), and a main oil pump body (3), characterized in that: The water tank (2) and the main oil pump body (3) are both fixedly installed on the upper surface of the base (1). The upper surface of the water tank (2) is provided with a first output oil pump (13) and a second output oil pump (16) distributed side by side. The main oil pump body (3) has two groups of first pipelines (4) and one group of second pipelines (7). Two oil filter cores (6) are communicated and arranged on one side of the water tank (2). Third pipelines (5) are arranged on both of the two oil filter cores (6). The third pipelines (5) are communicated with the corresponding first pipelines (4) through pipelines. Secondary filter cylinders (11) are arranged on the sides of the first output oil pump (13) and the second output oil pump (16). The first output oil pump (13), the second output oil pump (16) and the corresponding secondary filter cylinders (11) are communicated through oil outlet pipelines (14). One ends of the first output oil pump (13) and the second output oil pump (16) are both provided with return pipelines (19). The return pipelines (19) are communicated with the inside of the water tank (2). The upper end of the first output oil pump (13) is provided with a first output shaft (15). The upper end of the second output oil pump (16) is provided with a second output shaft (17). An inverted U-shaped pipeline (9) is further arranged above the water tank (2). An oil inlet pipeline (12) is arranged on one side of the secondary filter cylinder (11). An end connecting pipe (8) is communicated and arranged in the middle of the inverted U-shaped pipeline (9). The end connecting pipe (8) is communicated with the second pipeline (7) through a pipeline. The two ends of the inverted U-shaped pipeline (9) are respectively communicated with two groups of corresponding oil inlet pipelines (12). The oil inlet pipeline (12) and the end of the inverted U-shaped pipeline (9) are fixed through a threaded pipeline (10). A motor (18) is fixedly installed at the upper end of the main oil pump body (3). The oil pump gear power piece connected to the rotating shaft of the motor (18) is located inside the main oil pump body (3). An electromagnetic valve is arranged in the oil inlet pipeline (12); A second chamber (22) is arranged inside the secondary filter cylinder (11). A filter screen (31) is arranged at the position where the oil outlet pipeline (14) is communicated with the second chamber (22); A collection chamber (28) is further arranged inside the secondary filter cylinder (11). The collection chamber (28) is located on one side of the second chamber (22). The upper end of the collection chamber (28) is communicated with the upper end of the second chamber (22); The upper end of the second chamber (22) penetrates through the upper surface of the secondary filter cylinder (11). A sealing plug (21) is hermetically plugged at the position where the second chamber (22) penetrates through the upper surface of the secondary filter cylinder (11); A cotton bag (27) for collecting impurities in the collection chamber (28) is arranged below the sealing plug (21) and located in the collection chamber (28); A connecting plate (25) is fixedly arranged on the lower surface of the sealing plug (21). The connecting plate (25) is located at the position where the second chamber (22) communicates with the collection chamber (28). The upper end of the cotton bag (27) is fixedly arranged on the connecting plate (25). An opening is arranged at the upper end of the cotton bag (27). An inlet (26) corresponding to the opening is arranged on the connecting plate (25).

2. The gear oil pump assembly according to claim 1, characterized in that: A first chamber (20) is arranged inside both the first output oil pump (13) and the second output oil pump (16). A driving shaft (23) and a power plate (24) are arranged in the first chamber (20). The driving shaft (23) is fixedly welded to the lower end of the corresponding first output shaft (15) or second output shaft (17), and the driving shaft (23) is coaxial with the corresponding first output shaft (15) or second output shaft (17). The power plate (24) is fixedly welded to the outer ring of the driving shaft (23).

3. The gear oil pump assembly according to claim 2, characterized in that: A rotating cleaning shaft (30) is rotatably connected to the middle of the filter screen (31). A rotating cleaning plate (29) is fixedly arranged on the rotating cleaning shaft (30). The rotating cleaning plate (29) is movably arranged inside the second chamber (22).

4. The gear oil pump assembly according to claim 3, characterized in that: Rectangular plates are fixedly welded to the bottoms of both the first output oil pump (13) and the second output oil pump (16). The rectangular plates are fixedly installed on the upper surface of the water tank (2) by screws.

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