Integrated fuel pump

Abstract

The invention provides an integrated fuel pump, and belongs to the technical field of fuel pumps, the integrated fuel pump comprises a pump body, a driving assembly used for driving fuel delivery is fixedly connected in the pump body, the fuel inlet end of the pump body is fixedly connected with a connector, and a filtering mechanism used for filtering fuel is arranged in the connector. A double-filtering mechanism and dynamic filtering and cleaning are adopted to avoid blockage of a filtering disc, continuous pure supply of fuel oil is ensured, the combustion efficiency is improved, abrasion faults of an engine are reduced, meanwhile, impurity treatment is intelligent and convenient, manual disassembly is not needed, the maintenance cost and the labor intensity are reduced, shutdown for oil supply is not needed when the two filtering assemblies are cleaned, and the working efficiency is improved. According to the fuel oil system, continuous operation of equipment is guaranteed, the utilization rate and production efficiency of the equipment are effectively improved, meanwhile, the functions of fuel oil conveying, filtering, cleaning and the like are integrated, the installation space is saved, the risk of fuel oil leakage is reduced, and the integration level and stability of the whole fuel oil system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel pumps, in particular to an integrated fuel pump. Background Art

[0002] The fuel pump is a core component of the fuel supply system. Its function is to draw fuel from the fuel tank, pressurize it, and deliver it to the fuel supply pipe. It also works with the fuel pressure regulator to establish a certain fuel pressure to ensure that the engine has a stable and sufficient fuel supply under various operating conditions. The integrated fuel pump integrates the fuel pump with the motor to form a holistic electromechanical and hydraulic device. It aims to reduce size and weight, improve system reliability and efficiency, and is widely used in the automotive, aviation and other fields. To prevent abrasion of component surfaces caused by solid impurities such as sand and rust in the fuel, a filter mechanism is required in the fuel pump. For example, a Chinese patent discloses an integrated fuel pump (publication number CN117703779A). This device has a filter installed at the inlet via screws to filter impurities in the fuel. However, as an important component of fuel filtration, a large amount of impurities will adhere to the filter after a period of use. It is often necessary to disassemble the filter from the fuel pump as a whole and then use special tools to clean it. This cleaning method is not only complicated to operate, but also frequent disassembly of the filter can easily damage the connection between it and the fuel pump, resulting in poor sealing and fuel leakage. In addition, when replacing or cleaning the filter, the fuel pump needs to be stopped, which will affect the normal fuel supply of the engine, causing unstable engine operation and bringing inconvenience to the normal use of the equipment. Summary of the Invention

[0003] The object of the present invention is to provide an integrated fuel pump to solve the problems raised in the above background technology.

[0004] Therefore, the present invention provides the following technical solution: an integrated fuel pump, comprising a pump body, a drive assembly for driving fuel delivery fixedly connected to the pump body, a connector fixedly connected to the oil inlet end of the pump body, and a filter mechanism provided in the connector for filtering the fuel; The filtering mechanism includes a first filtering component fixedly connected to the connecting head and a second filtering component rotatably connected to the connecting head and connected to the driving component, and the first filtering component is connected to the second filtering component. The first filtering component is also provided with a cleaning component for cleaning the filtered impurities.

[0005] Preferably, the driving assembly includes a driving motor, a fixed cylinder is fixedly connected to the pump body, the driving motor is fixedly connected to the fixed cylinder, a heat dissipation groove is provided in the fixed cylinder, both ends of the heat dissipation groove are connected to the second filter assembly, the end of the pump body away from the connecting head is fixedly connected to the driving power interface, the output end of the driving power interface is connected to the driving motor, the output end of the driving motor is fixedly connected to an impeller, the impeller is rotatably connected to the connecting head, and the side of the impeller away from the driving motor is connected to the second filter assembly through a connecting shaft.

[0006] Preferably, an oil inlet pipe is fixedly connected to the side of the connector away from the pump body, and the oil inlet pipe is communicated with the interior of the first filter assembly; an oil outlet pipe is fixedly connected to the top of the pump body, and the oil outlet pipe is communicated with the interior of the second filter assembly.

[0007] Preferably, the first filter assembly includes a filter, the filter is fixedly connected to the connector, a first delivery pipe is fixedly connected to the side of the filter close to the oil inlet pipe, the first delivery pipe is connected to the oil inlet pipe, and a solenoid valve is provided in the first delivery pipe, a filter cartridge for filtering fuel is fixedly connected to the filter, and an end of the first delivery pipe close to the filter cartridge is connected to the filter cartridge; One end of the filter away from the first delivery pipe is fixedly connected to a connecting pipe, and the connecting pipe is connected to the filter, and the other end of the connecting pipe is connected to the second filter assembly.

[0008] Preferably, a fixed box and a drive box are fixedly connected to the side of the filter close to the oil inlet pipe, the cleaning assembly is arranged in the fixed box, a turbine is fixedly connected to the drive box, and an output end of the turbine is fixedly connected to a drive gear, the drive gear is rotatably connected to the fixed box, and the drive gear is engaged with the cleaning assembly in the fixed box; The drive box is further connected to a second delivery pipe, one end of which is connected to the oil inlet pipe, and the other end is connected to the filter, and a solenoid valve is provided in the second delivery pipe.

[0009] Preferably, the cleaning assembly includes a synchronous gear ring, which is rotatably connected to the fixed box, and the outer wall of the synchronous gear ring is engaged with the driving gear. A plurality of groups of first synchronous gears are provided in the synchronous gear ring, and each group of first synchronous gears is engaged with the inner wall of the synchronous gear ring. A second synchronous gear is provided between the plurality of groups of first synchronous gears, and the second synchronous gear is engaged with the plurality of groups of first synchronous gears. The plurality of groups of first synchronous gears and second synchronous gears are all rotatably connected to the fixed box.

[0010] Preferably, one end of each of the plurality of first synchronous gears close to the interior of the filter is fixedly connected to a synchronous rod, and one end of each of the second synchronous gears close to the interior of the filter is fixedly connected to a reciprocating screw rod, and the other ends of the reciprocating screw rod and the plurality of synchronous rods are rotatably connected to the inner wall of the other side of the filter, and a cleaning disk for cleaning the inner wall of the filter cartridge is threadedly connected to the reciprocating screw rod, and the cleaning disk is slidably connected to the plurality of synchronous rods; A first discharge pipe is fixedly connected to one side of the filter close to the connecting pipe, and the other end of the first discharge pipe passes through the pump body and extends to the outside of the pump body. The first discharge pipe is connected to the filter cartridge in the filter.

[0011] Preferably, one of the synchronization rods is also fixedly connected to a synchronization disk at one end away from the first synchronization gear, and the synchronization disk is rotatably connected to the inner wall of the filter, and the top of the synchronization disk is fixedly connected to a push rod, and the inner wall of the filter is also rotatably connected to a groove wheel, and multiple groups of notches are provided on the groove wheel, and the push rod on the top of the synchronization disk slides alternately and is engaged in the multiple groups of notches on the groove wheel, and the groove wheel has multiple groups of connecting ports adapted to the first discharge pipe, and multiple groups of connecting ports are alternately connected to the first discharge pipe.

[0012] Preferably, the second filter assembly includes a connecting cylinder, the connecting cylinder is fixedly connected to the pump body, the impeller is rotatably connected to the connecting cylinder, a filter disc is rotatably connected to the connecting cylinder, the side of the filter disc close to the connecting cylinder is fixed to the impeller, a cleaning groove is provided on the filter disc, the side of the cleaning groove away from the filter disc is fixed to the first filter assembly, and a plurality of groups of evenly distributed filter holes are provided on the side wall of the cleaning groove; A second discharge port is also provided on the side of the cleaning tank away from the filter hole, and the second discharge port is located at one end of the cleaning tank near the bottom. The second discharge port is connected to a second discharge pipe, and the other end of the second discharge pipe is connected to the first discharge pipe at the bottom of the pump body. A sealing plate is also slidably connected in the cleaning tank, and a reset spring is fixedly connected to the bottom of the sealing plate, and the other end of the reset spring is fixed to the bottom of the inner wall of the cleaning tank.

[0013] Compared with the prior art, the present invention has the following advantages: The present invention adopts a double filtering mechanism. The fuel first enters the filter cartridge through the first delivery pipe for preliminary filtration, and then flows into the second filter assembly for further filtration. In the second filter assembly, the filter disc rotates with the impeller, and its surface is constantly in contact with the cleaning tank. The cleaning tank can remove impurities on the surface of the filter disc, and the impurities fall into the bottom of the cleaning tank and are deposited. The excess fuel on the surface of the filter disc is discharged through the filter holes. This dynamic filtration and cleaning method effectively avoids impurities clogging the filter disc, ensures a continuous and pure supply of fuel, improves the combustion efficiency of the fuel, reduces the wear and failure of the engine caused by fuel impurities, and extends the service life of the engine.

[0014] In terms of impurity handling, the present invention is highly intelligent and convenient. When too much impurities accumulate at the bottom of the cleaning tank, the blocking plate moves downward under the pressure of the impurities, exposing the second discharge port. The impurities are automatically discharged into the second discharge pipe. After discharge, the blocking plate moves upward and resets under the action of the reset spring, resealing the discharge port. For cleaning the filter cartridge, the solenoid valve is controlled to change the direction of the fuel flow, driving the turbine to rotate a series of gears, so that the reciprocating screw drives the cleaning disc to move downward to clean impurities on the inner wall of the filter cartridge. At the same time, the synchronous disc drives the groove wheel to rotate, so that the connecting port coincides with the first discharge pipe, and the impurities are pushed out. This intelligent cleaning mechanism does not require frequent manual disassembly and cleaning, reducing maintenance costs and labor intensity. At the same time, when cleaning the two filter components, there is no need to stop the fuel pump from supplying oil to the engine and other equipment during the cleaning process, ensuring the continuous operation of the equipment, avoiding production interruptions or vehicle stoppages due to shutdown for cleaning, and greatly improving equipment utilization and production efficiency.

[0015] The present invention integrates the functions of fuel delivery, filtration, cleaning and motor heat dissipation into one, and the various components work together with a reasonable layout. This integrated design not only saves installation space, reduces pipeline connections, and reduces the risk of fuel leakage, but also improves the integration and stability of the entire fuel system, making it easier to install, use and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A first perspective schematic diagram of the present invention is shown; Figure 2 It shows a schematic structural diagram of the pump body in the present invention; Figure 3 Shows the structure of the first filter component in the present invention Figure 1 ; Figure 4 Shows the structure of the first filter component in the present invention Figure 2 ; Figure 5 It shows a schematic diagram of the structure inside the fixed box of the present invention; Figure 6A partial structural diagram of the first filter assembly and the cleaning assembly in the present invention is shown; Figure 7 Shows a partial structural diagram of the cleaning component in the present invention Figure 1 ; Figure 8 Shows a partial structural diagram of the cleaning component in the present invention Figure 2 ; Figure 9 An exploded view of the pump body of the present invention is shown; Figure 10 It shows a schematic diagram of the structure of the filter disc in the present invention; Figure 11 A schematic diagram of the structure inside the cleaning tank of the present invention is shown.

[0017] Figure: 1, pump body; 11, connector; 12, oil inlet pipe; 13, oil outlet pipe; 14, fixed cylinder; 15, heat sink; 2, drive assembly; 21, drive motor; 22, drive power interface; 23, impeller; 3, first filter assembly; 31, filter; 32, first delivery pipe; 33, filter cylinder; 34, connecting pipe; 35, first discharge pipe; 36, fixed box; 37, drive box; 38, second delivery pipe; 39, drive Gear; 4. Cleaning assembly; 41. Synchronous gear ring; 42. First synchronous gear; 43. Second synchronous gear; 44. Synchronous rod; 45. Reciprocating screw; 46. Cleaning disk; 47. Synchronous disk; 48. Grooved wheel; 49. Connecting port; 5. Second filter assembly; 51. Connecting cylinder; 52. Filter disk; 53. Cleaning trough; 54. Filter hole; 55. Second discharge port; 56. Second discharge pipe; 57. Sealing plate; 58. Return spring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] See also Figures 1 to 11The present invention provides a technical solution for an integrated fuel pump: an integrated fuel pump, comprising a pump body 1, a driving assembly 2 for driving fuel delivery fixedly connected to the pump body 1, a connector 11 fixedly connected to the oil inlet end of the pump body 1, a filtering mechanism for filtering the fuel provided in the connector 11, the filtering mechanism comprising a first filtering assembly 3 fixedly connected to the connector 11 and a second filtering assembly 5 rotatably connected to the connector 11 and connected to the driving assembly 2, and the first filtering assembly 3 is communicated with the second filtering assembly 5, the first filtering assembly 3 is further provided with a cleaning assembly 4 for cleaning filtered impurities, the driving assembly 2 comprises a driving motor 21, a fixing cylinder 14 fixedly connected to the pump body 1, the driving motor 21 is fixedly connected to the fuel inlet end of the pump body 1, and a fixing cylinder 14 fixed to the fuel inlet end of the pump body 1 It is connected to the fixed cylinder 14, and a heat dissipation groove 15 is provided in the fixed cylinder 14. Both ends of the heat dissipation groove 15 are connected to the second filter assembly 5. The end of the pump body 1 away from the connecting head 11 is fixedly connected to the driving power interface 22, and the output end of the driving power interface 22 is connected to the driving motor 21. The output end of the driving motor 21 is fixedly connected to the impeller 23, and the impeller 23 is rotatably connected to the connecting head 11. The side of the impeller 23 away from the driving motor 21 is connected to the second filter assembly 5 through a connecting shaft. The side of the connecting head 11 away from the pump body 1 is fixedly connected to the oil inlet pipe 12, and the oil inlet pipe 12 is connected to the inside of the first filter assembly 3. The top of the pump body 1 is fixedly connected to the oil outlet pipe 13, and the oil outlet pipe 13 is connected to the inside of the second filter assembly 5; Specifically, when in use, the oil inlet pipe 12 is first connected to the oil tank, and the drive power interface 22 is connected to the external power supply. When supplying oil, the external power supply is first turned on to energize the drive motor 21. After the drive motor 21 is energized, it drives the impeller 23 to rotate, and the fuel in the oil tank is sucked into the oil inlet pipe 12. After the fuel passes through the first filter component 3 and the second filter component 5, it is pumped out through the oil outlet pipe 13 to realize the supply of fuel. By setting the cleaning component 4 on the first filter component 3, when in use, when too much impurities accumulate on the first filter component 3, the cleaning component 4 can clean the first filter component 3 and remove the impurities to avoid clogging by impurities and affecting the oil supply; At the same time, through the heat dissipation groove 15 opened on the fixed cylinder 14, when the drive motor 21 is running, a part of the filtered fuel in the second filter component 5 can enter the fixed cylinder 14 through the heat dissipation groove 15 and flow out through the heat dissipation groove 15 on the other side. The flow of fuel dissipates heat for the drive motor 21, thereby ensuring the normal operation of the drive motor 21.

[0020] As an integrated fuel pump optimization solution, Figure 1-8As shown, the first filter assembly 3 includes a filter 31, which is fixedly connected to the connector 11. A first delivery pipe 32 is fixedly connected to the side of the filter 31 close to the oil inlet pipe 12. The first delivery pipe 32 is connected to the oil inlet pipe 12, and a solenoid valve is provided in the first delivery pipe 32. A filter cartridge 33 for filtering the fuel is fixedly connected to the filter 31. One end of the first delivery pipe 32 close to the filter cartridge 33 is connected to the filter cartridge 33. A connecting pipe 34 is fixedly connected to the end of the filter 31 away from the first delivery pipe 32. The connecting pipe 34 is connected to the filter 31, and the other end of the connecting pipe 34 is connected to the filter 31. The second filter assembly 5 is connected, and a fixed box 36 and a drive box 37 are fixedly connected to the side of the filter 31 near the oil inlet pipe 12. The cleaning assembly 4 is arranged in the fixed box 36, and a turbine is fixedly connected to the drive box 37. The output end of the turbine is fixedly connected to the drive gear 39. The drive gear 39 is rotatably connected to the fixed box 36, and the drive gear 39 is engaged with the cleaning assembly 4 in the fixed box 36. The drive box 37 is also connected to a second delivery pipe 38, one end of which is connected to the oil inlet pipe 12, and the other end is connected to the filter 31. A solenoid valve is provided in the second delivery pipe 38; Specifically, when the fuel enters the fuel inlet pipe 12, it first enters the filter cartridge 33 through the first delivery pipe 32, where it is filtered. The filtered fuel then flows out of the filter cartridge 33 and flows through the connecting pipe 34 to the second filter assembly 5, where it is filtered again and finally discharged through the fuel outlet pipe 13. When too much impurities accumulate in the filter cartridge 33 and need to be cleaned, the solenoid valve on the first delivery pipe 32 is closed and the solenoid valve on the second delivery pipe 38 is opened, so that the oil inlet pipe 12 delivers the fuel through the second delivery pipe 38 to the drive box 37 and then to the filter 31 through the second delivery pipe 38. When the fuel enters the drive box 37, the fuel drives the turbine in the drive box 37 to rotate, and the turbine drives the drive gear 39 to rotate, so that the drive gear 39 drives the cleaning assembly 4 to start, and the cleaning assembly 4 cleans the filter cartridge 33. When the cleaning assembly 4 is started, the fuel in the filter 31 is transported to the filter 31 through the second delivery pipe 38 and will not enter the filter cartridge 33. At this time, the fuel enters the second filter assembly 5 through the connecting pipe 34 and is filtered by the second filter assembly 5.

[0021] As a further optimization solution, Figure 1-8As shown, the cleaning assembly 4 includes a synchronous gear ring 41, which is rotatably connected to the fixed box 36, and the outer wall of the synchronous gear ring 41 is meshed with the driving gear 39, and a plurality of groups of first synchronous gears 42 are provided in the synchronous gear ring 41, and each group of first synchronous gears 42 is meshed with the inner wall of the synchronous gear ring 41, and a second synchronous gear 43 is provided between the plurality of first synchronous gears 42, and the second synchronous gear 43 is meshed with the plurality of first synchronous gears 42, and the plurality of first synchronous gears 42 and the second synchronous gear 43 are rotatably connected to the fixed box 36, and the plurality of first synchronous gears 42 are fixedly connected to a synchronous rod 44 at one end near the inside of the filter 31, and the second synchronous gear 43 is fixedly connected to a reciprocating screw 45 at one end near the inside of the filter 31, and the reciprocating screw 45 and the other end of the plurality of synchronous rods 44 are rotatably connected to the inner wall on the other side of the filter 31, and the reciprocating screw 45 is threadedly connected to The cleaning disc 46 is used to clean the inner wall of the filter cartridge 33, and the cleaning disc 46 is slidably connected to a plurality of synchronous rods 44. A first discharge pipe 35 is fixedly connected to one side of the filter 31 near the connecting pipe 34, and the other end of the first discharge pipe 35 passes through the pump body 1 and extends to the outside of the pump body 1. The first discharge pipe 35 is communicated with the filter cartridge 33 in the filter 31. One end of one synchronous rod 44 away from the first synchronous gear 42 is also fixedly connected to a synchronous disc 47. The synchronous disc 47 is rotatably connected to the inner wall of the filter 31. A push rod is fixedly connected to the top of the synchronous disc 47. A groove wheel 48 is also rotatably connected to the inner wall of the filter 31. The groove wheel 48 is provided with a plurality of groups of notches. The push rod at the top of the synchronous disc 47 is alternately slidably engaged in the plurality of groups of notches on the groove wheel 48. The groove wheel 48 is provided with a plurality of groups of communicating ports 49 adapted to the first discharge pipe 35, and the plurality of communicating ports 49 are alternately communicated with the first discharge pipe 35. Specifically, in the initial state, the cleaning disc 46 is located on the reciprocating screw 45 at one end close to the second synchronous gear 43, and the communication port 49 is in a staggered state with the first discharge pipe 35. When the filter cartridge 33 needs to be cleaned, the solenoid valve of the first delivery pipe 32 is first closed and the solenoid valve on the second delivery pipe 38 is opened, so that the oil inlet pipe 12 delivers the fuel to the drive box 37 through the second delivery pipe 38 and then delivers it to the filter 31 through the second delivery pipe 38 again. When the fuel enters the drive box 37, the drive The turbine in the box 37 rotates, causing the drive gear 39 to rotate. When the drive gear 39 rotates, the drive gear 39 drives the synchronous gear ring 41 to rotate. The synchronous gear ring 41 drives the second synchronous gear 43 to rotate through multiple sets of first synchronous gears 42, causing the reciprocating screw 45 to rotate. The reciprocating screw 45 drives the cleaning disk 46 to move downward along the multiple sets of synchronous rods 44. When the cleaning disk 46 moves downward, it cleans the inner wall of the filter cartridge 33 and pushes the impurities filtered in the filter cartridge 33 away from the second synchronous gear 43. When the multiple sets of first synchronous gears 42 rotate, the first synchronous gears 42 connected to the synchronous disk 47 drive the synchronous disk 47 to rotate. When the synchronous disk 47 rotates, the push rod on it moves into the notch of the groove wheel 48 and pushes the groove wheel 48 to rotate, so that the communication port 49 on the groove wheel 48 coincides with the first discharge pipe 35, so that the cleaning disk 46 can push out impurities through the communication port 49 and the first discharge pipe 35; When the synchronous disk 47 drives the groove wheel 48 to rotate again, the connecting port 49 rotates again to disengage from the first discharge pipe 35, so that the first discharge pipe 35 is closed. By providing a closable first discharge pipe 35, when the cleaning component 4 is not in use, the first discharge pipe 35 can be closed by the groove wheel 48, thereby preventing the fuel from leaking from the first discharge pipe 35 when the filter cartridge 33 is performing normal filtering work.

[0022] As a further optimization solution, Figure 1-11 As shown, the second filter assembly 5 includes a connecting cylinder 51, which is fixedly connected to the pump body 1, and the impeller 23 is rotatably connected to the connecting cylinder 51. A filter disc 52 is rotatably connected to the connecting cylinder 51, and the side of the filter disc 52 close to the connecting cylinder 51 is fixed to the impeller 23. A cleaning groove 53 is provided on the filter disc 52, and the side of the cleaning groove 53 away from the filter disc 52 is fixed to the first filter assembly 3. A plurality of groups of evenly distributed filter holes 54 are provided on the side wall of the cleaning groove 53, and a second discharge port 55 is further provided on the side of the cleaning groove 53 away from the filter holes 54, and the second discharge port 55 is located on one end of the cleaning groove 53 near the bottom, and a second discharge pipe 56 is connected to the second discharge port 55, and the other end of the second discharge pipe 56 is connected to the first discharge pipe 35 at the bottom of the pump body 1. A sealing plate 57 is also slidably connected to the cleaning groove 53, and a return spring 58 is fixedly connected to the bottom of the inner wall of the cleaning groove 53. Specifically, when the cleaning component 4 cleans the filter cartridge 33, the fuel cannot be filtered through the filter cartridge 33 and directly enter the second filter component 5. When the fuel enters the connecting cylinder 51, it will be filtered by the filter disc 52 to ensure the purity of the fuel. When the driving motor 21 drives the impeller 23 to rotate to transport the fuel, the impeller 23 also drives the filter disc 52 to rotate. When the filter disc 52 rotates, the surface of the filter disc 52 is constantly in contact with the cleaning groove 53. The cleaning groove 53 can remove impurities filtered from the surface of the filter disc 52. The removed impurities fall into the cleaning groove 53 as the filter disc 52 rotates and are deposited at the bottom of the cleaning groove 53 under the action of gravity. Excess fuel on the surface of the filter disc 52 can be discharged through the multiple filter holes 54 when entering the cleaning tank 53; Initially, the blocking plate 57 is located at the second discharge port 55 to block the second discharge port 55. When impurities accumulate too much at the bottom of the cleaning tank 53, the blocking plate 57 gradually moves downward under the pressure of the impurities, exposing the second discharge port 55. The impurities can be discharged into the second discharge pipe 56 through the second discharge port 55. After the impurities are discharged, the blocking plate 57 moves upward and resets under the drive of the reset spring 58, so that the second discharge port 55 is closed again, and the cleaning tank 53 continues to collect impurities.

[0023] The working principle of this integrated fuel pump: When in use, first connect the oil inlet pipe 12 to the fuel tank, and connect the drive power interface 22 to the external power supply. When supplying oil, first turn on the external power supply to energize the drive motor 21. After the drive motor 21 is energized, it drives the impeller 23 to rotate, and the fuel in the fuel tank is sucked in through the oil inlet pipe 12. When the fuel enters through the fuel inlet pipe 12, it first enters the filter cartridge 33 through the first delivery pipe 32, where it is filtered. The filtered fuel then flows out of the filter cartridge 33 and through the connecting pipe 34 into the second filter assembly 5, where it is filtered again and finally discharged through the fuel outlet pipe 13. When the drive motor 21 is running, a portion of the filtered fuel in the second filter assembly 5 can enter the fixed cylinder 14 through the heat dissipation groove 15 and flow out through the heat dissipation groove 15 on the other side. The flow of fuel dissipates heat from the drive motor 21, ensuring the normal operation of the drive motor 21. After the fuel passes through the filter cartridge 33 and enters the connecting cartridge 51, it is filtered again by the filter disc 52 to ensure the purity of the fuel. At the same time, when the driving motor 21 drives the impeller 23 to rotate to transport the fuel, the impeller 23 also drives the filter disc 52 to rotate. When the filter disc 52 rotates, the surface of the filter disc 52 continuously contacts the cleaning groove 53. The cleaning groove 53 can remove impurities filtered out of the surface of the filter disc 52. The removed impurities fall into the cleaning groove 53 as the filter disc 52 rotates and are deposited toward the bottom of the cleaning groove 53 under the action of gravity. When the excess fuel on the surface of the filter disc 52 enters the cleaning groove 53, it can be discharged through the multiple filter holes 54. When too much impurities accumulate at the bottom of the cleaning tank 53, the blocking plate 57 gradually moves downward under the pressure of the impurities, exposing the second discharge port 55. The impurities can be discharged into the second discharge pipe 56 through the second discharge port 55. After the impurities are discharged, the blocking plate 57 moves upward and resets under the drive of the return spring 58, so that the second discharge port 55 is closed again, and the cleaning tank 53 continues to collect impurities. In the initial state, the cleaning disk 46 is located on the reciprocating screw 45 at one end close to the second synchronous gear 43, and the connecting port 49 is staggered with the first discharge pipe 35. When the filter cartridge 33 needs to be cleaned, the solenoid valve of the first delivery pipe 32 is first closed and the solenoid valve on the second delivery pipe 38 is opened, so that the oil inlet pipe 12 delivers the fuel through the second delivery pipe 38 to the drive box 37 and then to the filter 31 through the second delivery pipe 38 again. When the fuel enters the drive box 37, the turbine in the drive box 37 is driven to rotate, causing the drive gear 39 to rotate, and the drive gear 39 drives the synchronous gear ring 41 to rotate. The synchronous gear ring 41 drives the second synchronous gear 43 to rotate through multiple sets of first synchronous gears 42, causing the reciprocating screw 45 to rotate. The reciprocating screw 45 drives the cleaning disk 46 to move downward along the multiple sets of synchronous rods 44, cleaning the inner wall of the filter cartridge 33 and pushing the impurities filtered in the filter cartridge 33 in the direction away from the second synchronous gear 43. When the multiple sets of first synchronous gears 42 rotate, the first synchronous gears 42 connected to the synchronous disk 47 drive the synchronous disk 47 to rotate. When the synchronous disk 47 rotates, the push rod on it moves into the notch of the groove wheel 48 and pushes the groove wheel 48 to rotate, so that the communication port 49 on the groove wheel 48 coincides with the first discharge pipe 35, so that the cleaning disk 46 can push out impurities through the communication port 49 and the first discharge pipe 35; When the synchronous disk 47 drives the groove wheel 48 to rotate again, the connecting port 49 rotates again to disengage from the first discharge pipe 35, so that the first discharge pipe 35 is closed. By providing a closable first discharge pipe 35, when the cleaning component 4 is not in use, the first discharge pipe 35 can be closed by the groove wheel 48, thereby preventing the fuel from leaking from the first discharge pipe 35 when the filter cartridge 33 is performing normal filtering work.

[0024] Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Those skilled in the art will appreciate that many modifications and variations can be made to the embodiments described herein without departing from the spirit or scope of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making any creative effort shall fall within the scope of protection of the present invention.

Claims

1. An integrated fuel pump, comprising a pump body (1), wherein a drive assembly (2) for driving fuel delivery is fixedly connected to the pump body (1), characterized in that: The oil inlet end of the pump body (1) is fixedly connected to a connector (11), and a filtering mechanism for filtering the fuel is provided in the connector (11); The filtering mechanism comprises a first filtering assembly (3) fixedly connected to the connector (11) and a second filtering assembly (5) rotatably connected to the connector (11) and connected to the driving assembly (2), wherein the first filtering assembly (3) is in communication with the second filtering assembly (5), and a cleaning assembly (4) for cleaning filtered impurities is further provided in the first filtering assembly (3).

2. The integrated fuel pump according to claim 1, characterized in that: The driving assembly (2) includes a driving motor (21), a fixed cylinder (14) is fixedly connected to the pump body (1), the driving motor (21) is fixedly connected to the fixed cylinder (14), a heat dissipation groove (15) is provided in the fixed cylinder (14), both ends of the heat dissipation groove (15) are connected to the second filter assembly (5), the end of the pump body (1) away from the connector (11) is fixedly connected to the driving power interface (22), the output end of the driving power interface (22) is connected to the driving motor (21), the output end of the driving motor (21) is fixedly connected to the impeller (23), the impeller (23) is rotatably connected to the connector (11), and the side of the impeller (23) away from the driving motor (21) is connected to the second filter assembly (5) through a connecting shaft.

3. The integrated fuel pump according to claim 2, characterized in that: An oil inlet pipe (12) is fixedly connected to the side of the connector (11) away from the pump body (1), and the oil inlet pipe (12) is communicated with the interior of the first filter assembly (3). An oil outlet pipe (13) is fixedly connected to the top of the pump body (1), and the oil outlet pipe (13) is communicated with the interior of the second filter assembly (5).

4. The integrated fuel pump according to claim 3, characterized in that: The first filter assembly (3) comprises a filter (31), the filter (31) being fixedly connected to the connector (11), a first delivery pipe (32) being fixedly connected to a side of the filter (31) close to the oil inlet pipe (12), the first delivery pipe (32) being in communication with the oil inlet pipe (12), and a solenoid valve being provided in the first delivery pipe (32), a filter cartridge (33) for filtering fuel being fixedly connected to the filter (31), and an end of the first delivery pipe (32) close to the filter cartridge (33) being in communication with the filter cartridge (33); One end of the filter (31) away from the first delivery pipe (32) is fixedly connected to a connecting pipe (34), and the connecting pipe (34) is connected to the filter (31), and the other end of the connecting pipe (34) is connected to the second filter assembly (5).

5. The integrated fuel pump according to claim 4, characterized in that: The filter (31) is further fixedly connected to a fixed box (36) and a drive box (37) on one side close to the oil inlet pipe (12); the cleaning assembly (4) is arranged in the fixed box (36); a turbine is fixedly connected to the drive box (37); and a drive gear (39) is fixedly connected to the output end of the turbine; the drive gear (39) is rotatably connected to the fixed box (36), and the drive gear (39) is meshed with the cleaning assembly (4) in the fixed box (36); The drive box (37) is further connected to a second delivery pipe (38), one end of the second delivery pipe (38) is connected to the oil inlet pipe (12), and the other end is connected to the filter (31), and a solenoid valve is provided in the second delivery pipe (38).

6. The integrated fuel pump according to claim 5, characterized in that: The cleaning assembly (4) includes a synchronous gear ring (41), the synchronous gear ring (41) is rotatably connected to the fixed box (36), and the outer wall of the synchronous gear ring (41) is meshed with the driving gear (39), a plurality of groups of first synchronous gears (42) are provided in the synchronous gear ring (41), and each group of first synchronous gears (42) is meshed with the inner wall of the synchronous gear ring (41), a second synchronous gear (43) is provided between the plurality of groups of the first synchronous gears (42), and the second synchronous gear (43) is meshed with the plurality of groups of the first synchronous gears (42), and the plurality of groups of the first synchronous gears (42) and the second synchronous gears (43) are all rotatably connected to the fixed box (36).

7. The integrated fuel pump according to claim 6, characterized in that: One end of each of the plurality of first synchronous gears (42) close to the interior of the filter (31) is fixedly connected to a synchronous rod (44); one end of each of the second synchronous gears (43) close to the interior of the filter (31) is fixedly connected to a reciprocating screw (45); the other ends of the reciprocating screw (45) and the plurality of synchronous rods (44) are rotatably connected to the inner wall of the other side of the filter (31); a cleaning disk (46) for cleaning the inner wall of the filter cartridge (33) is threadedly connected to the reciprocating screw (45), and the cleaning disk (46) is slidably connected to the plurality of synchronous rods (44); A first discharge pipe (35) is fixedly connected to one side of the filter (31) close to the connecting pipe (34), and the other end of the first discharge pipe (35) passes through the pump body (1) and extends to the outside of the pump body (1). The first discharge pipe (35) is connected to the filter cartridge (33) in the filter (31).

8. The integrated fuel pump according to claim 7, characterized in that: One end of the synchronization rod (44) away from the first synchronization gear (42) is also fixedly connected to a synchronization disk (47), and the synchronization disk (47) is rotatably connected to the inner wall of the filter (31). The top of the synchronization disk (47) is fixedly connected to a push rod, and the inner wall of the filter (31) is also rotatably connected to a groove wheel (48), and the groove wheel (48) is provided with multiple groups of notches. The push rod on the top of the synchronization disk (47) is alternately slidably engaged in the multiple groups of notches on the groove wheel (48), and the groove wheel (48) is provided with multiple groups of communication ports (49) adapted to the first discharge pipe (35), and the multiple groups of communication ports (49) are alternately connected to the first discharge pipe (35).

9. The integrated fuel pump according to claim 4, characterized in that: The second filter assembly (5) comprises a connecting cylinder (51), the connecting cylinder (51) being fixedly connected to the pump body (1), the impeller (23) being rotatably connected to the connecting cylinder (51), a filter disc (52) being rotatably connected to the connecting cylinder (51), the filter disc (52) being fixed to the impeller (23) on a side close to the connecting cylinder (51), a cleaning groove (53) being provided on the filter disc (52), the cleaning groove (53) being fixed to the first filter assembly (3) on a side away from the filter disc (52), and a plurality of groups of evenly distributed filter holes (54) being provided on a side wall of the cleaning groove (53); A second discharge port (55) is further provided on a side of the cleaning tank (53) away from the filter hole (54), and the second discharge port (55) is located at one end of the cleaning tank (53) near the bottom. A second discharge pipe (56) is connected to the second discharge port (55), and the other end of the second discharge pipe (56) is connected to the first discharge pipe (35) at the bottom of the pump body (1). A blocking plate (57) is further slidably connected in the cleaning tank (53), and a return spring (58) is fixedly connected to the bottom of the inner wall of the cleaning tank (53). The other end of the return spring (58) is fixed to the bottom of the inner wall of the cleaning tank (53).

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