Combination pump structure of fuel regulator

Abstract

The invention discloses a fuel regulator combined pump structure which comprises a regulator shell, and one side of the regulator shell is connected with a combined pump shell. A power shaft is installed on one side of the combined pump shell in a penetrating mode, a first rotating cylinder and a second rotating cylinder are arranged in the combined pump shell, a driving gear is installed on the first rotating cylinder, a driven gear is installed on the second rotating cylinder, and the driving gear and the driven gear are connected in a meshed mode. The power shaft is in meshed connection with internal teeth in a first rotating cylinder through a first gear shaft at one end, and one end of the first rotating cylinder is connected with a first rotating gear; a positioning disc is installed in the combined pump shell, a second rotating gear is installed in the middle of one side of the positioning disc in a penetrating mode, and the first rotating gear is connected with the second rotating gear in an engaged mode. Through the transmission structure, the working speed of the centrifugal booster pump is increased, and the specific speed, working stability and efficiency of the centrifugal booster pump are improved.

Description

Technical Field

[0001] This invention relates to the field of aerospace technology, and in particular to a fuel regulator combined pump structure. Background Technology

[0002] Aviation fuel pumps are core components of the aircraft engine fuel control system, providing a stable fuel supply for the entire system. Currently, mainstream aircraft engine fuel pumps employ a combined pump design, typically integrating a centrifugal booster pump and the main fuel pump into a single unit, sharing a drive shaft. This reduces the number of output shafts in the engine accessory housing, simplifying the structure and optimizing the layout. However, in this traditional combined pump design, the centrifugal booster pump and main fuel pump share a drive shaft and rotate at the same speed. During engine startup, due to the low speed, the centrifugal pump operates at low speed and low flow rate, resulting in poor boosting capacity and unstable operation, which is detrimental to the subsequent operation of the main fuel pump and fuel regulator. Simultaneously, limited by the main fuel pump's speed, the centrifugal booster pump is also restricted to a lower speed, resulting in a low specific speed pump, often below 30. This makes the centrifugal booster pump prone to jet-wake structures and flow separation phenomena, leading to fluctuations in flow parameters and low efficiency.

[0003] The existing combined pump has the following disadvantages: the gear pump and the centrifugal pump have the same speed. When starting, the centrifugal pump has a low speed, which cannot achieve effective output of flow and pressure. At the same time, it is limited by the maximum speed of the gear pump, which results in a large size of the centrifugal pump in order to achieve effective pressurization.

[0004] To address the shortcomings of transmission-driven combined pumps, a novel combined pump with a transmission structure is proposed. This structure enables the centrifugal booster pump and the main fuel pump to operate at different speeds. The transmission structure increases the operating speed of the centrifugal booster pump, improving its specific speed, operational stability, and efficiency. Simultaneously, a thrust bearing structure is designed for the centrifugal booster pump, ensuring effective support and stable rotation of the impeller. Furthermore, a semi-open impeller is used, and by removing part of the impeller back cover, the axial load on the impeller is effectively reduced. The impeller is also integrated with the inducer, simplifying the structure and enhancing the centrifugal booster pump's resistance to cavitation. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a fuel regulator combined pump structure.

[0006] The objective of this invention is achieved as follows: a fuel regulator combination pump structure, including a regulator housing, a combination pump housing connected to one side of the regulator housing, and an oil filter fixing housing and an oil filter mounting housing provided on the upper part of the combination pump housing; A power shaft is installed through one side of the combined pump housing. The inside of the combined pump housing is provided with a first rotating cylinder and a second rotating cylinder. A first positioning cylinder and a third positioning cylinder are sleeved on the outside of the first rotating cylinder. A drive gear is fixedly installed between the first positioning cylinder and the third positioning cylinder on the first rotating cylinder. A second positioning cylinder and a fourth positioning cylinder are sleeved on the outside of the second rotating cylinder. A driven gear is fixedly installed between the second positioning cylinder and the fourth positioning cylinder on the second rotating cylinder. The drive gear and the driven gear are meshed together. A first gear shaft is fixedly provided at one end of the power shaft. An internal tooth is fixedly provided inside the first rotating cylinder. The power shaft is connected inside the first rotating cylinder through the meshing of the first gear shaft and the internal tooth. A first rotating gear is fixedly connected to one end of the first rotating cylinder. A positioning plate is fixedly installed inside the housing of the combined pump by positioning bolts. A tenth sealing ring is inlaid on the outer ring of the positioning plate. A second rotating gear is installed through the middle of one side of the positioning plate. The first rotating gear and the second rotating gear are meshed and connected. A turntable located on the other side of the positioning plate is connected to the second rotating gear. Several impeller blades are fixedly installed on the turntable. A connecting seat is fixedly installed in the middle of the turntable. A rotating rod is fixedly installed on the connecting seat. A turbine blade is fixedly installed on the rotating rod.

[0007] Specifically, a sealing plate is fixedly installed at one end of the combined pump housing. The sealing plate is sealed to one end face of the combined pump housing through a first sealing ring. The power shaft passes through the sealing plate and is connected to the inside of the first rotating cylinder. A limiting ring for restricting installation is fixedly provided at one end of the power shaft, and a second gear shaft is fixedly provided at one end of the power shaft.

[0008] Specifically, thrust bearings are installed at both ends of the first rotating cylinder and the second rotating cylinder, and the upper surface of the thrust bearings is movably installed inside the combined pump housing through a second sealing ring.

[0009] Specifically, the first positioning cylinder and the second positioning cylinder are fitted together, the third positioning cylinder and the fourth positioning cylinder are fitted together, and the first positioning cylinder and the second positioning cylinder, as well as the third positioning cylinder and the fourth positioning cylinder, are respectively fixedly connected to each other by connecting pins.

[0010] Specifically, a plurality of first springs are embedded inside one side of the third positioning cylinder and the fourth positioning cylinder, and a third sealing ring is embedded on the end face of the first positioning cylinder, the second positioning cylinder, the third positioning cylinder and the fourth positioning cylinder.

[0011] Specifically, a fourth sealing ring is embedded inside the thrust bearing, the thrust bearing is mounted on the power shaft through the fourth sealing ring, a fifth sealing ring is sleeved in the middle of the power shaft, a sixth sealing ring is sleeved at one end of the first gear shaft, and the power shaft is connected to the inside of the first rotating cylinder through the fifth and sixth sealing rings.

[0012] Specifically, a connecting rod is fixedly provided at one end of the first rotating gear, and a seventh sealing ring is sleeved on the connecting rod. The connecting rod is sealed and engaged with the inside of the first rotating cylinder through the seventh sealing ring.

[0013] Specifically, the oil filter fixing housing and the oil filter mounting housing are fixedly connected, an eighth sealing ring is installed at the connection between the oil filter fixing housing and the oil filter mounting housing, a filter element is fixedly installed inside the oil filter fixing housing and the oil filter mounting housing, and an air inlet pipe and an exhaust pipe are provided at the upper part of one end of the oil filter fixing housing.

[0014] Specifically, the exhaust pipe has a first movable plate inside, a ninth sealing ring is sleeved on the outside of the first movable plate, a telescopic rod is fixedly installed in the middle of the first movable plate, a sealing ball is fixedly connected to the upper end of the telescopic rod, a second spring is fixedly installed on the outside of the first movable plate, the second spring is sleeved on the outside of the telescopic rod, and the upper end of the second spring is attached to the lower surface of the sealing ball.

[0015] Specifically, a safety valve is provided on one side of the combined pump housing, and a second movable plate is movably provided inside the safety valve. The second movable plate is threadedly connected to an installation component, and a third spring is fixedly installed at the upper end of the second movable plate. The third spring is fixedly installed inside the safety valve.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention enables the centrifugal booster pump and the main fuel pump in a combined pump to operate at different speeds. It improves the operating speed of the centrifugal booster pump through a transmission structure, thereby enhancing its specific speed, operational stability, and efficiency. Simultaneously, a thrust bearing structure is designed for the centrifugal booster pump, ensuring effective support and stable rotation of the impeller. Furthermore, the centrifugal booster pump uses a semi-open impeller design, which, by removing part of the impeller back cover, effectively reduces the axial load on the impeller. The integrated design of the turntable and connecting seat simplifies the structure and enhances the centrifugal booster pump's resistance to cavitation. In operation, the first rotating cylinder is driven by the first gear on the power shaft. The first rotating cylinder, in turn, drives the second rotating gear via the first rotating gear, which in turn drives the turntable, impeller, connecting seat, rotating rod, and turbine blade. This centrifugal force draws oil into the pump body, thus enabling operation. Furthermore, the first and second rotating cylinders are connected by a drive gear and a driven gear, allowing the second rotating cylinder to operate at a slower speed while the driven gear operates at a faster speed. This pressurizes the oil, increasing the oil pressure inside the combined pump housing. By using the transmission gears, the centrifugal pump and gear pump can operate at different speeds, optimizing the performance and size of the centrifugal pump and achieving the overall optimal performance of the combined pump. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the linkage between the driving gear and the driven gear of the present invention; Figure 5 This is an internal schematic diagram of the linkage between the driving gear and the driven gear of the present invention; Figure 6 This is a schematic diagram showing the connection between the power shaft and the first rotating cylinder of the present invention; Figure 7 This is a cross-sectional view showing the connection between the power shaft and the first rotating cylinder of the present invention; Figure 8 This is a schematic diagram of the power shaft structure of the present invention; Figure 9 This is a schematic diagram of the structure of the first rotating cylinder of the present invention; Figure 10 This is a schematic diagram of the structure of the turntable and connecting seat of the present invention mounted on the positioning plate; Figure 11 This is a schematic diagram of the structure of the second rotating gear of the present invention mounted on the positioning plate; Figure 12 This is the invention Figure 3 A in the middle is an enlarged schematic diagram; Figure 13This is the invention Figure 3 Enlarged diagram of point B in the middle.

[0019] In the diagram, 1. Regulator housing; 2. Combined pump housing; 3. Oil filter mounting housing; 4. Oil filter installation housing; 5. Power shaft; 6. Sealing plate; 7. First rotating cylinder; 8. Second rotating cylinder; 9. First spring; 10. Drive gear; 11. Driven gear; 12. First rotating gear; 13. First positioning cylinder; 14. Second positioning cylinder; 15. Third positioning cylinder; 16. Fourth positioning cylinder; 17. First gear shaft; 18. Connecting rod; 19. Internal gear; 20. Positioning disc; 21. Second rotating gear; 22. Turntable; 23. Impeller; 24. Connecting seat; 25. Rotating rod; 26. Turbine blade; 2 7. Positioning bolt; 28. Tenth sealing ring; 29. ​​Second gear shaft; 30. Limiting ring; 31. Fourth sealing ring; 32. Fifth sealing ring; 33. Sixth sealing ring; 34. Seventh sealing ring; 35. Thrust bearing; 36. Third sealing ring; 37. Second sealing ring; 38. Connecting pin; 39. First sealing ring; 40. Filter element; 41. Eighth sealing ring; 42. Inlet pipe; 43. Exhaust pipe; 44. Safety valve; 45. First movable plate; 46. Ninth sealing ring; 47. Telescopic rod; 48. Second spring; 49. Sealing ball; 50. Mounting component; 51. Second movable plate; 52. Third spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1-13 The fuel regulator combination pump structure shown includes a regulator housing 1, a combination pump housing 2 connected to one side of the regulator housing 1, and an oil filter fixing housing 3 and an oil filter mounting housing 4 provided on the upper part of the combination pump housing 2. A power shaft 5 is installed through one side of the combined pump housing 2. The combined pump housing 2 has a first rotating cylinder 7 and a second rotating cylinder 8 inside. A first positioning cylinder 13 and a third positioning cylinder 15 are sleeved on the outside of the first rotating cylinder 7. A drive gear 10 is fixedly installed between the first positioning cylinder 13 and the third positioning cylinder 15. A second positioning cylinder 14 and a fourth positioning cylinder 16 are sleeved on the outside of the second rotating cylinder 8. A driven gear 11 is fixedly installed between the second positioning cylinder 14 and the fourth positioning cylinder 16. The drive gear 10 and the driven gear 11 are meshed together. A first gear shaft 17 is fixedly installed at one end of the power shaft 5. An internal tooth 19 is fixedly installed inside the first rotating cylinder 7. The power shaft 5 is connected to the inside of the first rotating cylinder 7 through the meshing of the first gear shaft 17 and the internal tooth 19. A first rotating gear 12 is fixedly connected to one end of the first rotating cylinder 7. A positioning disc 20 is fixedly installed inside the combined pump housing 2 by positioning bolts 27. A tenth sealing ring 28 is inlaid on the outer ring of the positioning disc 20. A second rotating gear 21 is installed through the middle of one side of the positioning disc 20. The first rotating gear 12 is meshed with the second rotating gear 21. A turntable 22 located on the other side of the positioning disc 20 is connected to the second rotating gear 21. Several impeller blades 23 are fixedly installed on the turntable 22. A connecting seat 24 is fixedly installed in the middle of the turntable 22. A rotating rod 25 is fixedly installed on the connecting seat 24. A turbine blade 26 is fixedly installed on the rotating rod 25.

[0022] In this embodiment, preferably, a sealing plate 6 is fixedly installed at one end of the combined pump housing 2. The sealing plate 6 is sealed to one end face of the combined pump housing 2 through a first sealing ring 39. The power shaft 5 passes through the sealing plate 6 and is connected to the inside of the first rotating cylinder 7. A limiting ring 30 for restricting installation is fixedly provided at one end of the power shaft 5, and a second gear shaft 29 is fixedly provided at one end of the power shaft 5. It should be noted that one end of the combined pump housing 2 is sealed by a sealing plate 6, and the sealing plate 6 and the combined pump housing 2 are sealed together by a first sealing ring 39, which helps to prevent fluid leakage and ensure a stable working environment inside the pump. The power shaft 5 passes through the sealing plate 6 and is connected to the inside of the first rotating cylinder 7 to drive the first rotating cylinder 7 to rotate. One end of the power shaft 5 is fixed with a limit ring 30, which is used to limit the axial displacement of the power shaft 5 during operation, prevent contact or friction between components, and ensure operational stability. The end of the power shaft 5 is fixed with a second gear shaft 29 for connection to an external power source to transmit power or perform mechanical transmission. The design of the entire structure is to improve the sealing and stability of the equipment, avoid oil leakage or other fluid leakage problems, and ensure the smooth operation of the first rotating cylinder 7 to prevent excessive displacement from affecting the system.

[0023] In this embodiment, preferably, thrust bearings 35 are installed at both ends of the first rotating cylinder 7 and the second rotating cylinder 8, and the upper surface of the thrust bearings 35 is movably installed inside the combined pump housing 2 through the second sealing ring 37. It should be noted that the thrust bearing 35 is a bearing specifically designed to bear axial loads and can limit the axial movement of the shaft. The thrust bearing 35 is installed at both ends of the first rotating cylinder 7 and the second rotating cylinder 8. The function of the thrust bearing 35 is to prevent excessive displacement or offset of the first rotating cylinder 7 and the second rotating cylinder 8 in the axial direction. The installation position of the thrust bearing 35 usually needs to ensure that it can effectively withstand axial force and maintain a stable clearance with the first rotating cylinder 7 and the second rotating cylinder 8 to ensure the normal operation of the bearing. The second sealing ring 37 is designed to prevent oil or other liquid leakage and can effectively reduce the heat generated by friction. The movable installation method is usually designed to accommodate small axial and radial displacements during rotation. The second sealing ring 37 is used to improve sealing and prevent external contaminants from entering the equipment, while also reducing friction between rotating parts and extending the service life of the equipment.

[0024] In this embodiment, preferably, the first positioning cylinder 13 and the second positioning cylinder 14 are fitted together, the third positioning cylinder 15 and the fourth positioning cylinder 16 are fitted together, and the first positioning cylinder 13 and the second positioning cylinder 14, as well as the third positioning cylinder 15 and the fourth positioning cylinder 16, are respectively fixedly connected to each other by connecting pins 38. It should be noted that the tight fit between the first positioning cylinder 13 and the second positioning cylinder 14, as well as the third positioning cylinder 15 and the fourth positioning cylinder 16, prevents displacement caused by factors such as temperature changes or vibration. The connecting pin 38 is used to ensure the fixed connection between the first positioning cylinder 13 and the second positioning cylinder 14, as well as the third positioning cylinder 15 and the fourth positioning cylinder 16, preventing relative displacement during operation. The fit design of the tight connection and the connecting pin 38 simplifies the installation process, avoids overly complicated connection methods, and also improves the stability and reliability of the installation.

[0025] In this embodiment, preferably, a plurality of first springs 9 are embedded in the interior of one side of the third positioning cylinder 15 and the fourth positioning cylinder 16, and a third sealing ring 36 is embedded in the end face of the first positioning cylinder 13, the second positioning cylinder 14, the third positioning cylinder 15 and the fourth positioning cylinder 16. It should be noted that the preload of the first spring 9 ensures a tight fit between the positioning cylinders and absorbs some vibration and impact during equipment operation, reducing unnecessary displacement or wear. The third sealing ring 36 is embedded in the end faces of the first positioning cylinder 13, the second positioning cylinder 14, the third positioning cylinder 15, and the fourth positioning cylinder 16, mainly to prevent liquids, gases, or other contaminants from entering or leaking. The function of the sealing ring is to maintain the airtightness of the system and prevent leakage or intrusion of external contaminants. The combination of the first spring 9 and the third sealing ring 36 can significantly improve the overall performance of the system. The first spring 9 provides a stable preload force to ensure that the first positioning cylinder 13, the second positioning cylinder 14, the third positioning cylinder 15, and the fourth positioning cylinder 16 do not shift or loosen during operation. The third sealing ring 36 ensures that there is no liquid or gas leakage during equipment operation, thereby maintaining the stability and airtightness of the system. Since the first spring 9 can buffer displacement caused by external loads, and the third sealing ring 36 adapts to factors such as thermal expansion and contraction and pressure changes to ensure that the sealing performance is not affected, thereby increasing the reliability and durability of the system.

[0026] In this embodiment, preferably, a fourth sealing ring 31 is embedded inside the thrust bearing 35, the thrust bearing 35 is mounted on the power shaft 5 through the fourth sealing ring 31, a fifth sealing ring 32 is sleeved in the middle of the power shaft 5, a sixth sealing ring 33 is sleeved at one end of the first gear shaft 17, and the power shaft 5 is connected to the inside of the first rotating cylinder 7 through the fifth sealing ring 32 and the sixth sealing ring 33. It should be noted that the fourth sealing ring 31, the fifth sealing ring 32, and the sixth sealing ring 33 are provided at key components such as the thrust bearing 35, the power shaft 5, the first gear shaft 17, and the first rotating cylinder 7, which improves the efficient sealing of important connection points in the power transmission system. The synergistic effect of the fourth sealing ring 31, the fifth sealing ring 32, and the sixth sealing ring 33 ensures the sealing, stability, and reliability of the system, effectively prevents leakage and contamination problems, extends the service life of the equipment, and improves the operating efficiency of the equipment.

[0027] In this embodiment, preferably, a connecting rod 18 is fixedly provided at one end of the first rotating gear 12, and a seventh sealing ring 34 is sleeved on the connecting rod 18. The connecting rod 18 is sealed and engaged with the inside of the first rotating cylinder 7 through the seventh sealing ring 34. It should be noted that the seventh sealing ring 34 is fitted onto the connecting rod 18, which realizes the sealing engagement between the connecting rod 18 and the first rotating cylinder 7, giving full play to the important role of the seventh sealing ring 34 in preventing liquid leakage and protecting the equipment from contamination; it can effectively enhance the sealing, stability and reliability of the entire power transmission system, ensuring the long-term efficient operation of the system; at the same time, it also reduces the risk of failure and maintenance costs caused by poor sealing.

[0028] In this embodiment, preferably, the oil filter fixing housing 3 and the oil filter mounting housing 4 are fixedly connected, an eighth sealing ring 41 is installed at the connection between the oil filter fixing housing 3 and the oil filter mounting housing 4, a filter element 40 is fixedly installed inside the oil filter fixing housing 3 and the oil filter mounting housing 4, and an air inlet pipe 42 and an exhaust pipe 43 are provided at the upper part of one end of the oil filter fixing housing 3. It should be noted that the fixed connection between the oil filter fixing housing 3 and the oil filter mounting housing 4, as well as the use of the eighth sealing ring 41, ensures sealing and leak-proof performance. At the same time, the high-efficiency filtration function of the filter element 40 effectively extends the equipment life and maintains the cleanliness of the system. The air inlet pipe 42 and the exhaust pipe 43 ensure the normal flow and separation of gas and oil, guaranteeing the efficient operation of the oil filter system. Through sealing, filtration, and fluid distribution design measures, the stability and reliability of the equipment are ensured.

[0029] In this embodiment, preferably, the exhaust pipe 43 is provided with a first movable plate 45 inside, a ninth sealing ring 46 is sleeved on the outside of the first movable plate 45, a telescopic rod 47 is fixedly installed in the middle of the first movable plate 45, a sealing ball 49 is fixedly connected to the upper end of the telescopic rod 47, a second spring 48 is fixedly installed on the outside of the first movable plate 45, the second spring 48 is sleeved on the outside of the telescopic rod 47, and the upper end of the second spring 48 is attached to the lower surface of the sealing ball 49. It should be noted that the design of the first movable plate 45, telescopic rod 47, sealing ball 49 and second spring 48 inside the exhaust pipe 43 ensures that the gas emission of the oil filter system can be precisely adjusted; the use of the ninth sealing ring 46 ensures sealing and prevents gas leakage, while the second spring 48 provides the function of automatically restoring the seal; taking into account flexibility, sealing and high efficiency, it ensures the smoothness and safety of the exhaust process and helps to improve the performance and reliability of the oil filter system.

[0030] In this embodiment, preferably, a safety valve 44 is provided on one side of the combined pump housing 2, a second movable plate 51 is movably provided inside the safety valve 44, an installation part 50 is threadedly connected to the second movable plate 51, and a third spring 52 is fixedly installed at the upper end of the second movable plate 51. The third spring 52 is fixedly installed inside the safety valve 44. It should be noted that the safety valve 44, through the setting of the second movable plate 51 and the third spring 52, can automatically open when the system pressure is too high, release excess pressure, and protect the system from damage; the safety valve 44 can flexibly set the pressure threshold according to different working conditions, ensuring that the system operates within a safe range, thereby improving the reliability and safety of the entire oil pump system.

[0031] The specific operational steps for this application are as follows: Power is transmitted to one side of the combined pump housing 2 via a power shaft 5. The power shaft 5 is connected to the internal teeth 19 inside the first rotating cylinder 7 via a first gear 17 at its front end, causing the power shaft 5 to drive the first rotating cylinder 7 to rotate. The first rotating cylinder 7 drives the driven gear 11 on the second rotating cylinder 8 via a drive gear 10, thereby driving the second rotating cylinder 8. A first positioning cylinder 13 and a third positioning cylinder 15 are sleeved on the outer side of the first rotating cylinder 7. The first rotating cylinder 7 is connected to the first positioning cylinder 13 and the third positioning cylinder. A drive gear 10 is fixedly installed between the first and third positioning cylinders 15. A second positioning cylinder 14 and a fourth positioning cylinder 16 are sleeved on the outer side of the second rotating cylinder 8. A driven gear 11 is fixedly installed between the second positioning cylinder 14 and the fourth positioning cylinder 16. The drive gear 10 and the driven gear 11 are meshed together, enabling the drive gear 10 and the driven gear 11 to achieve a transmission connection. The arrangement of the first positioning cylinder 13, the third positioning cylinder 15, the second positioning cylinder 14, and the fourth positioning cylinder 16 facilitates the stability of the drive gear 10 and the driven gear 11. Qualitatively, a first rotating gear 12 is fixedly connected to one end of the first rotating cylinder 7; a positioning disc 20 is fixedly installed inside the combined pump housing 2 by positioning bolts 27, and a tenth sealing ring 28 is inlaid on the outer ring of the positioning disc 20; a second rotating gear 21 is installed through the middle of one side of the positioning disc 20, and the first rotating gear 12 and the second rotating gear 21 are meshed together; a turntable 22 located on the other side of the positioning disc 20 is connected to the second rotating gear 21, and several impeller blades 23 are fixedly installed on the turntable 22; a [missing information - likely a device or component] is fixedly installed in the middle of the turntable 22. A connecting seat 24 is provided, on which a rotating rod 25 is fixedly mounted, and on which a turbine blade 26 is fixedly mounted. The first rotating gear 12 on the first rotating cylinder 7 drives the second rotating gear 21, thereby causing the turntable 22, impeller blade 23, connecting seat 24, rotating rod 25 and turbine blade 26 to rotate, thereby extracting fuel. The extracted fuel is filtered through the filter element 40 inside the oil filter fixing housing 3 and the oil filter mounting housing 4, and then pressurized through the second rotating cylinder 8 and the driven gear 11.

[0032] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A fuel regulator combined pump structure, characterized in that, It includes a regulator housing (1), one side of which is connected to a combined pump housing (2), and the upper part of the combined pump housing (2) is provided with an oil filter fixing housing (3) and an oil filter mounting housing (4). A power shaft (5) is installed through one side of the combined pump housing (2). The combined pump housing (2) contains a first rotating cylinder (7) and a second rotating cylinder (8). A first positioning cylinder (13) and a third positioning cylinder (15) are sleeved on the outer side of the first rotating cylinder (7). A drive gear (10) is fixedly installed between the first positioning cylinder (13) and the third positioning cylinder (15) on the first rotating cylinder (7). A second positioning cylinder (14) and a fourth positioning cylinder (16) are sleeved on the outer side of the second rotating cylinder (8). The second rotating cylinder (8) is located in the... A driven gear (11) is fixedly installed between the second positioning cylinder (14) and the fourth positioning cylinder (16). The driving gear (10) and the driven gear (11) are meshed together. A first gear shaft (17) is fixedly provided at one end of the power shaft (5). An internal tooth (19) is fixedly provided inside the first rotating cylinder (7). The power shaft (5) is meshed with the first gear shaft (17) and the internal tooth (19) inside the first rotating cylinder (7). A first rotating gear (12) is fixedly connected at one end of the first rotating cylinder (7). The combined pump housing (2) is fixedly installed with a positioning plate (20) by positioning bolts (27). A tenth sealing ring (28) is inlaid on the outer ring of the positioning plate (20). A second rotating gear (21) is installed through the middle of one side of the positioning plate (20). The first rotating gear (12) meshes with the second rotating gear (21). A turntable (22) is connected to the second rotating gear (21) on the other side of the positioning plate (20). Several impeller blades (23) are fixedly provided on the turntable (22). A connecting seat (24) is fixedly installed in the middle of the turntable (22). A rotating rod (25) is fixedly provided on the connecting seat (24). A turbine blade (26) is fixedly provided on the rotating rod (25).

2. The fuel regulator combined pump structure according to claim 1, characterized in that: A sealing plate (6) is fixedly installed at one end of the combined pump housing (2). The sealing plate (6) is sealed to one end face of the combined pump housing (2) through a first sealing ring (39). The power shaft (5) passes through the sealing plate (6) and is connected to the inside of the first rotating cylinder (7). A limiting ring (30) for restricting installation is fixedly provided at one end of the power shaft (5). A second gear shaft (29) is fixedly provided at one end of the power shaft (5).

3. The fuel regulator combination pump structure according to claim 1, characterized in that: The first rotating cylinder (7) and the second rotating cylinder (8) are respectively equipped with thrust bearings (35), and the upper surface of the thrust bearings (35) is movably installed inside the combined pump housing (2) through the second sealing ring (37).

4. The fuel regulator combined pump structure according to claim 1, characterized in that: The first positioning cylinder (13) and the second positioning cylinder (14) are fitted together, the third positioning cylinder (15) and the fourth positioning cylinder (16) are fitted together, and the first positioning cylinder (13) and the second positioning cylinder (14), as well as the third positioning cylinder (15) and the fourth positioning cylinder (16), are respectively fixedly connected to each other by connecting pins (38).

5. The fuel regulator combination pump structure according to claim 1, characterized in that: A plurality of first springs (9) are respectively embedded in one side of the third positioning cylinder (15) and the fourth positioning cylinder (16), and a third sealing ring (36) is respectively embedded in the end face of the first positioning cylinder (13), the second positioning cylinder (14), the third positioning cylinder (15) and the fourth positioning cylinder (16).

6. The fuel regulator combination pump structure according to claim 3, characterized in that: The thrust bearing (35) is fitted with a fourth sealing ring (31), and the thrust bearing (35) is mounted on the power shaft (5) through the fourth sealing ring (31). A fifth sealing ring (32) is sleeved in the middle of the power shaft (5), and a sixth sealing ring (33) is sleeved at one end of the first gear shaft (17). The power shaft (5) is connected to the inside of the first rotating cylinder (7) through the fifth sealing ring (32) and the sixth sealing ring (33).

7. The fuel regulator combination pump structure according to claim 1, characterized in that: A connecting rod (18) is fixedly provided at one end of the first rotating gear (12). A seventh sealing ring (34) is sleeved on the connecting rod (18). The connecting rod (18) is sealed and engaged with the inside of the first rotating cylinder (7) through the seventh sealing ring (34).

8. The fuel regulator combination pump structure according to claim 1, characterized in that: The oil filter fixing housing (3) and the oil filter mounting housing (4) are fixedly connected. An eighth sealing ring (41) is installed at the connection between the oil filter fixing housing (3) and the oil filter mounting housing (4). A filter element (40) is fixedly installed inside the oil filter fixing housing (3) and the oil filter mounting housing (4). An air inlet pipe (42) and an exhaust pipe (43) are provided at the upper part of one end of the oil filter fixing housing (3).

9. The fuel regulator combination pump structure according to claim 8, characterized in that: The exhaust pipe (43) is provided with a first movable plate (45) inside. A ninth sealing ring (46) is sleeved on the outside of the first movable plate (45). A telescopic rod (47) is fixedly installed in the middle of the first movable plate (45). A sealing ball (49) is fixedly connected to the upper end of the telescopic rod (47). A second spring (48) is fixedly installed on the outside of the first movable plate (45). The second spring (48) is sleeved on the outside of the telescopic rod (47). The upper end of the second spring (48) is attached to the lower surface of the sealing ball (49).

10. The fuel regulator combination pump structure according to claim 1, characterized in that: A safety valve (44) is provided on one side of the combined pump housing (2). A second movable plate (51) is movably provided inside the safety valve (44). The second movable plate (51) is threadedly connected to an installation part (50). A third spring (52) is fixedly installed on the upper end of the second movable plate (51). The third spring (52) is fixedly installed inside the safety valve (44).

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