Integrated fuel pump

Abstract

The application provides an integrated fuel pump, and belongs to the technical field of fuel pumps.The pump body is fixedly connected with a driving assembly for driving fuel delivery, the oil inlet end of the pump body is fixedly connected with a connecting head, and the connecting head is provided with a filtering mechanism for filtering fuel.The application adopts a double-filtering mechanism, dynamic filtering and cleaning avoid the blocking of the filter disc, ensure the continuous and pure supply of fuel, improve the combustion efficiency, reduce the wear and tear of the engine, and intelligently and conveniently handle impurities without manual disassembly, thereby reducing the maintenance cost and labor intensity, and without the need of stopping the oil supply during the cleaning of the two filtering assemblies, thereby ensuring the continuous operation of the equipment, effectively improving the equipment utilization and production efficiency, integrating the fuel delivery, filtering and cleaning functions in one, saving the installation space, reducing the risk of fuel leakage, and improving the integration and stability of the entire fuel system.

Description

Technical Field

[0001] This invention relates to the field of fuel pump technology, specifically to an integrated fuel pump. Background Technology

[0002] The fuel pump is the 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 line. It also works with the fuel pressure regulator to establish a certain fuel pressure, ensuring that the engine can obtain a stable and sufficient fuel supply under various operating conditions. The integrated fuel pump integrates the fuel pump and the motor, designed as a whole electromechanical-hydraulic integrated 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 solid impurities such as sand and rust in the fuel from causing wear on the surface of components, a filter mechanism needs to be installed in the fuel pump. For example, an integrated fuel pump disclosed in Chinese Patent (Publication No. CN117703779A) has a filter screen installed at the inlet end by screws to filter impurities in the fuel. However, as a crucial component of fuel filtration, the filter screen accumulates a large amount of impurities after a period of use. This often requires disassembling the entire filter screen from the fuel pump and cleaning it with specialized tools. This cleaning method is not only complex, but frequent disassembly of the filter screen can damage its connection to the fuel pump, leading to poor sealing and fuel leakage. Furthermore, replacing or cleaning the filter screen requires stopping the fuel pump, which affects the engine's normal fuel supply, causing unstable engine operation and inconvenience to the normal use of the equipment. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated fuel pump to solve the problems mentioned in the background art.

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

[0005] Preferably, the drive assembly includes a drive motor, a fixed cylinder is fixedly connected to the pump body, the drive 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, a drive power interface is fixedly connected to the end of the pump body away from the connector, the output end of the drive power interface is connected to the drive motor, an impeller is fixedly connected to the output end of the drive motor, the impeller is rotatably connected to the connector, and the side of the impeller away from the drive 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 connected to the inside 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 connected to the inside 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 near 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 the end of the first delivery pipe near the filter cartridge is connected to the filter cartridge. The filter is fixedly connected to a connecting pipe at one end away from the first delivery pipe, and the connecting pipe is connected to the filter. The other end of the connecting pipe is connected to the second filter assembly.

[0008] Preferably, the filter is further fixedly connected to a fixed box and a drive box on the side near the oil inlet pipe. The cleaning component is disposed in the fixed box, and a turbine is fixedly connected in the drive box. The output end of the turbine is fixedly connected to a drive gear. The drive gear is rotatably connected in the fixed box and meshes with the cleaning component in the fixed box. The drive box is also 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. A solenoid valve is installed in the second delivery pipe.

[0009] Preferably, the cleaning assembly includes a synchronous gear ring, which is rotatably connected to a fixed housing, and the outer wall of the synchronous gear ring meshes with a drive gear. The synchronous gear ring is provided with multiple sets of first synchronous gears, and each set of first synchronous gears meshes with the inner wall of the synchronous gear ring. A second synchronous gear is provided between the multiple sets of first synchronous gears, and the second synchronous gear meshes with the multiple sets of first synchronous gears. Both the multiple sets of first synchronous gears and the second synchronous gears are rotatably connected to the fixed housing.

[0010] Preferably, each of the first set of synchronous gears is fixedly connected to a synchronous rod at one end near the inside of the filter, and the second synchronous gear is fixedly connected to a reciprocating screw at one end near the inside of the filter. The other ends of the reciprocating screw and the multiple synchronous rods are rotatably connected to the inner wall of the other side of the filter. A cleaning disc for cleaning the inner wall of the filter cylinder is threaded onto the reciprocating screw, and the cleaning disc is slidably connected to the multiple synchronous rods. The filter is also fixedly connected to a first discharge pipe on the side near 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 cylinder inside the filter.

[0011] Preferably, one of the synchronizing rods is further fixedly connected to a synchronizing disc at the end furthest from the first synchronizing gear. The synchronizing disc is rotatably connected to the inner wall of the filter. A push rod is fixedly connected to the top of the synchronizing disc. A grooved wheel is rotatably connected to the inner wall of the filter. The grooved wheel has multiple sets of slots. The push rod at the top of the synchronizing disc alternately slides and engages with the multiple sets of slots on the grooved wheel. The grooved wheel has multiple sets of communication ports adapted to the first discharge pipe. The multiple sets of communication ports alternately communicate with the first discharge pipe.

[0012] Preferably, the second filter assembly includes a connecting cylinder, which is fixedly connected to the pump body. The impeller is rotatably connected inside the connecting cylinder. A filter disc is rotatably connected inside the connecting cylinder. The side of the filter disc closest to the connecting cylinder is fixed to the impeller. A cleaning groove is provided on the filter disc. The side of the cleaning groove furthest from the filter disc is fixed to the first filter assembly. Multiple sets of evenly distributed filter holes are provided on the side wall of the cleaning groove. A second discharge port is provided on the side of the cleaning tank away from the filter hole, and the second discharge port is located at the end of the cleaning tank near the bottom. A second discharge pipe is connected to the second discharge port, 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 return spring is fixedly connected to the bottom of the sealing plate. The other end of the return spring is fixed to the bottom of the inner wall of the cleaning tank.

[0013] Compared with the prior art, the beneficial effects of this application include: This invention employs a dual filtration mechanism. Fuel first enters the filter cartridge through a 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 continuously contacts the cleaning groove. The cleaning groove removes impurities from the surface of the filter disc, which then settle at the bottom. Excess fuel on the surface of the filter disc is discharged through the filter holes. This dynamic filtration and cleaning method effectively prevents impurities from clogging the filter disc, ensuring a continuous supply of pure fuel, improving fuel combustion efficiency, reducing engine wear and malfunctions caused by fuel impurities, and extending engine life.

[0014] In terms of impurity handling, this invention demonstrates high intelligence and convenience. When too much impurity accumulates at the bottom of the cleaning tank, the sealing plate moves down under the pressure of the impurities, exposing the second discharge port. The impurities are automatically discharged to the second discharge pipe. After discharge, the sealing plate moves up and resets under the action of the reset spring, re-sealing the discharge port. For cleaning the filter cartridge, the fuel flow direction is changed by controlling the solenoid valve, which drives the turbine to rotate a series of gears. This causes the reciprocating screw to move the cleaning disc down to clean the 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, thus pushing out the impurities. This intelligent cleaning mechanism does not require frequent manual disassembly and cleaning, reducing maintenance costs and labor intensity. Meanwhile, during the cleaning process, neither of the two filter components requires stopping the fuel pump to supply fuel to the engine and other equipment, ensuring continuous operation of the equipment and avoiding production interruptions or vehicle downtime caused by shutdown for cleaning, thus greatly improving equipment utilization and production efficiency.

[0015] This invention integrates functions such as fuel delivery, filtration, cleaning, and motor cooling into one unit. The components work together in a reasonable layout. This integrated design not only saves installation space and reduces pipeline connections, thus lowering 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. Attached Figure Description

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

[0017] In the diagram: 1. Pump body; 11. Connector; 12. Oil inlet pipe; 13. Oil outlet pipe; 14. Fixed cylinder; 15. Heat dissipation groove; 2. Drive assembly; 21. Drive motor; 22. Drive power interface; 23. Impeller; 3. First filter assembly; 31. Filter; 32. First conveying pipe; 33. Filter cylinder; 34. Connecting pipe; 35. First discharge pipe; 36. Fixed box; 37. Drive box; 38. Second conveying pipe; 39. Drive 4. Gear; 4. Cleaning assembly; 41. Synchronous gear ring; 42. First synchronous gear; 43. Second synchronous gear; 44. Synchronous rod; 45. Reciprocating screw; 46. Cleaning disc; 47. Synchronous disc; 48. Grooved wheel; 49. Connecting port; 5. Second filter assembly; 51. Connecting cylinder; 52. Filter disc; 53. Cleaning groove; 54. Filter hole; 55. Second discharge port; 56. Second discharge pipe; 57. Sealing plate; 58. Return spring. Detailed Implementation

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

[0019] Please see Figures 1 to 11This invention provides an integrated fuel pump technical solution: an integrated fuel pump includes a pump body 1, a drive assembly 2 for driving fuel delivery fixedly connected in the pump body 1, a connector 11 fixedly connected to the fuel inlet end of the pump body 1, a filter mechanism for filtering fuel provided in the connector 11, the filter mechanism including a first filter assembly 3 fixedly connected in the connector 11 and a second filter assembly 5 rotatably connected in the connector 11 and connected to the drive assembly 2, and the first filter assembly 3 and the second filter assembly 5 are in communication, the first filter assembly 3 is also provided with a cleaning assembly 4 for cleaning the filtered impurities, the drive assembly 2 includes a drive motor 21, a fixed cylinder 14 fixedly connected inside the pump body 1, and the drive motor 21 is fixedly... Connected to the fixed cylinder 14, the fixed cylinder 14 has a heat dissipation groove 15, both ends of the heat dissipation groove 15 are connected to the second filter assembly 5. The pump body 1 is fixedly connected to the end away from the connector 11 with a drive power interface 22. The output end of the drive power interface 22 is connected to the drive motor 21. The output end of the drive motor 21 is fixedly connected to an impeller 23. The impeller 23 is rotatably connected to the connector 11, and the side of the impeller 23 away from the drive motor 21 is connected to the second filter assembly 5 through a connecting shaft. The side of the connector 11 away from the pump body 1 is fixedly connected to an 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 an oil outlet pipe 13, and the oil outlet pipe 13 is connected to the inside of the second filter assembly 5. Specifically, in use, first connect the oil inlet pipe 12 to the oil tank and connect the drive power interface 22 to the external power source. When supplying fuel, first turn on the external power source to power the drive motor 21. After the drive motor 21 is powered on, it drives the impeller 23 to rotate, drawing fuel from the oil tank through the oil inlet pipe 12. After the fuel passes through the first filter assembly 3 and the second filter assembly 5, it is pumped out through the oil outlet pipe 13 to achieve fuel supply. By using the cleaning component 4 installed on the first filter component 3, when too many impurities accumulate on the first filter component 3 during use, the cleaning component 4 can clean the inside of the first filter component 3, remove the impurities, and prevent impurities from clogging and affecting the oil supply. Meanwhile, through the heat dissipation groove 15 opened on the fixed cylinder 14, 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.

[0020] As an integrated fuel pump optimization solution, such as 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 near the oil inlet pipe 12. The first delivery pipe 32 is connected to the oil inlet pipe 12 and is equipped with a solenoid valve. A filter cartridge 33 for filtering fuel is fixedly connected to the filter 31. The end of the first delivery pipe 32 near 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 and is connected to the filter 31. The other end of the connecting pipe 34 is connected to... The second filter assembly 5 is connected. The filter 31 is also fixedly connected to the fixed box 36 and the drive box 37 on the side near the oil inlet pipe 12. The cleaning assembly 4 is set in the fixed box 36. A turbine is fixedly connected in 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 in the fixed box 36, and the drive gear 39 meshes with the cleaning assembly 4 in the fixed box 36. The drive box 37 is also connected to the 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. A solenoid valve is set in the second delivery pipe 38. Specifically, when fuel enters through the inlet pipe 12, it first enters the filter cartridge 33 through the first delivery pipe 32. The fuel is filtered by the filter cartridge 33. The filtered fuel flows out of the filter cartridge 33 and flows through the connecting pipe 34 to the second filter assembly 5. It is filtered again by the second filter assembly 5 and finally discharged through the outlet pipe 13. When too many 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 fuel through the second delivery pipe 38 to the drive box 37 and then through the second delivery pipe 38 to the filter 31. 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 component 4 to start, and the cleaning component 4 cleans the filter cartridge 33. When the cleaning component 4 is activated, the fuel in the filter 31 is delivered 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 component 5 through the connecting pipe 34 and is filtered by the second filter component 5.

[0021] As a further optimization plan, such as Figure 1-8As shown, the cleaning component 4 includes a synchronous gear ring 41, which is rotatably connected to the fixed housing 36. The outer wall of the synchronous gear ring 41 meshes with the drive gear 39. Multiple sets of first synchronous gears 42 are arranged in the synchronous gear ring 41, and each set of first synchronous gears 42 meshes with the inner wall of the synchronous gear ring 41. Second synchronous gears 43 are arranged between the multiple sets of first synchronous gears 42, and the second synchronous gears 43 mesh with the multiple sets of first synchronous gears 42. Both the multiple sets of first synchronous gears 42 and the second synchronous gears 43 are rotatably connected to the fixed housing 36. A synchronous rod 44 is fixedly connected to one end of each set of first synchronous gears 42 near the inside of the filter 31. A reciprocating screw 45 is fixedly connected to one end of each second synchronous gear 43 near the inside of the filter 31. The other ends of the reciprocating screw 45 and the multiple synchronous rods 44 are rotatably connected to the inner wall of the other side of the filter 31. A threaded connection is made to the reciprocating screw 45. A cleaning disc 46 is used to clean the inner wall of the filter cartridge 33. The cleaning disc 46 is slidably connected to multiple synchronizing rods 44. A first discharge pipe 35 is also fixedly connected to the side of the filter 31 near the connecting pipe 34. 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 inside the filter 31. A synchronizing disc 47 is also fixedly connected to the end of one of the synchronizing rods 44 away from the first synchronizing gear 42. The synchronizing disc 47 is rotatably connected to the inner wall of the filter 31. A push rod is fixedly connected to the top of the synchronizing disc 47. A grooved wheel 48 is also rotatably connected to the inner wall of the filter 31. Multiple sets of slots are opened on the grooved wheel 48. The push rod at the top of the synchronizing disc 47 is alternately slidably engaged in multiple sets of slots on the grooved wheel 48. Multiple sets of connecting ports 49 are opened on the grooved wheel 48 that are compatible with the first discharge pipe 35. The multiple sets of connecting ports 49 are alternately connected to the first discharge pipe 35. Specifically, in the initial state, the cleaning disc 46 is located on the reciprocating screw 45 near the second synchronous gear 43, and the connecting port 49 is offset from the first discharge pipe 35. When cleaning of the filter cartridge 33 is required, 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 fuel through the second delivery pipe 38 to the drive box 37 and then through the second delivery pipe 38 to the filter 31. When the fuel enters the drive box 37, the drive is activated. The turbine inside the housing 37 rotates, causing the drive gear 39 to rotate. When the drive gear 39 rotates, it 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 disc 46 to move down along multiple sets of synchronous rods 44. When the cleaning disc 46 moves down, it cleans the inner wall of the filter cartridge 33 at the same time, pushing the impurities filtered in the filter cartridge 33 away from the second synchronous gear 43. When 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 slot of the grooved wheel 48 and pushes the grooved wheel 48 to rotate, so that the connecting port 49 on the grooved wheel 48 coincides with the first discharge pipe 35, so that the cleaning disk 46 can push out impurities through the connecting port 49 and the first discharge pipe 35. When the synchronizing disc 47 drives the grooved wheel 48 to rotate again, the connecting port 49 rotates again to disengage from the first discharge pipe 35, thereby closing the first discharge pipe 35. By setting a closable first discharge pipe 35, the first discharge pipe 35 can be closed by the grooved wheel 48 when the cleaning component 4 is not used, thus preventing fuel from leaking out of the first discharge pipe 35 when the filter cartridge 33 is performing normal filtration.

[0022] As a further optimization plan, such as Figure 1-11 As shown, the second filter assembly 5 includes a connecting cylinder 51, which is fixedly connected to the pump body 1. An impeller 23 is rotatably connected to the connecting cylinder 51. A filter disc 52 is rotatably connected in the connecting cylinder 51. The side of the filter disc 52 closest to the connecting cylinder 51 is fixed to the impeller 23. A cleaning groove 53 is provided on the filter disc 52. The side of the cleaning groove 53 away from the filter disc 52 is fixed to the first filter assembly 3. Multiple sets of evenly distributed filter holes 54 are opened on the side wall of the cleaning groove 53. A second discharge port 55 is also opened on the side of the cleaning groove 53 away from the filter holes 54. The second discharge port 55 is located at the end of the cleaning groove 53 near the bottom. A second discharge pipe 56 is connected to the second discharge port 55. 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 in the cleaning groove 53. A return spring 58 is fixedly connected to the bottom of the sealing plate 57. The other end of the return spring 58 is fixed 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 pass through the filter cartridge 33 and directly enters 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 drive motor 21 drives the impeller 23 to rotate and deliver fuel, the impeller 23 simultaneously 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 impurities filtered out from the surface of the filter disc 52 can be removed through the cleaning groove 53. The removed impurities fall into the cleaning groove 53 along with the rotation of the filter disc 52 and are deposited towards the bottom of the cleaning groove 53 under the action of gravity. Excess fuel on the surface of filter disc 52 can be discharged through multiple filter holes 54 when it enters cleaning tank 53. Initially, the sealing plate 57 is located at the second discharge port 55, blocking the second discharge port 55. When too much impurity accumulates at the bottom of the cleaning tank 53, the sealing plate 57 gradually moves down under the pressure of the impurities, exposing the second discharge port 55. The impurities can then be discharged through the second discharge port 55 into the second discharge pipe 56. After the impurities are discharged, the sealing plate 57 moves up and resets under the action of the return spring 58, closing the second discharge port 55 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 oil tank and connect the drive power interface 22 to the external power source. When supplying fuel, first turn on the external power source to power the drive motor 21. After the drive motor 21 is powered on, it drives the impeller 23 to rotate and draws the fuel in the oil tank through the oil inlet pipe 12. When fuel enters through the inlet pipe 12, it first enters the filter cartridge 33 through the first delivery pipe 32. The fuel is filtered by the filter cartridge 33. The filtered fuel flows out of the filter cartridge 33 and flows through the connecting pipe 34 to the second filter assembly 5. It is filtered again by the second filter assembly 5 and finally discharged through the 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. When fuel enters the connecting cylinder 51 after being filtered by the filter cartridge 33, it will be filtered again by the filter disc 52 to ensure the purity of the fuel. At the same time, when the drive motor 21 drives the impeller 23 to rotate and 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 impurities filtered out by the filter disc 52 can be removed by the cleaning groove 53. The removed impurities fall into the cleaning groove 53 along with the rotation of the filter disc 52 and are deposited to 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 multiple filter holes 54 when it enters the cleaning groove 53. When impurities accumulate excessively at the bottom of the cleaning tank 53, the sealing 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 sealing plate 57 moves upward and resets under the action of the reset 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 disc 46 is located on the reciprocating screw 45 at one end near the second synchronous gear 43, and the connecting port 49 is offset from the first discharge pipe 35. When it is necessary to clean the filter cartridge 33, the solenoid valve of 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 fuel through the second delivery pipe 38 to the drive box 37 and then through the second delivery pipe 38 to the filter 31. When the fuel enters the drive box 37, it drives the turbine in the drive box 37 to rotate, causing the drive gear 39 to rotate. 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 disc 46 to move down along multiple sets of synchronous rods 44 to clean the inner wall of the filter cartridge 33 and push the impurities filtered in the filter cartridge 33 away from the second synchronous gear 43. When 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 slot of the grooved wheel 48 and pushes the grooved wheel 48 to rotate, so that the connecting port 49 on the grooved wheel 48 coincides with the first discharge pipe 35, so that the cleaning disk 46 can push out impurities through the connecting port 49 and the first discharge pipe 35. When the synchronizing disc 47 drives the grooved wheel 48 to rotate again, the connecting port 49 rotates again to disengage from the first discharge pipe 35, thereby closing the first discharge pipe 35. By setting a closable first discharge pipe 35, the first discharge pipe 35 can be closed by the grooved wheel 48 when the cleaning component 4 is not used, thus preventing fuel from leaking out of the first discharge pipe 35 when the filter cartridge 33 is performing normal filtration.

[0024] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not 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 skilled in the art based on the embodiments of the present invention without inventive effort are 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 in the pump body (1), characterized in that: The pump body (1) is fixedly connected to a connector (11) at the oil inlet end, and the connector (11) is provided with a filter mechanism for filtering fuel. The filtration mechanism includes a first filter assembly (3) fixedly connected to the connector (11) and a second filter assembly (5) rotatably connected to the connector (11) and connected to the drive assembly (2). The first filter assembly (3) and the second filter assembly (5) are connected in communication. The first filter assembly (3) is also provided with a cleaning assembly (4) for cleaning the filtered impurities. The drive assembly (2) includes a drive motor (21). A fixed cylinder (14) is fixedly connected inside the pump body (1). The drive motor (21) is fixedly connected in 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). A drive power interface (22) is fixedly connected to one end of the pump body (1) away from the connector (11). The output end of the drive power interface (22) is connected to the drive motor (21). An impeller (23) is fixedly connected to the output end of the drive motor (21). The impeller (23) is rotatably connected in the connector (11). The side of the impeller (23) away from the drive motor (21) is connected to the second filter assembly (5) through a connecting shaft. The connector (11) is fixedly connected to an oil inlet pipe (12) on the side away from the pump body (1), 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 an oil outlet pipe (13), and the oil outlet pipe (13) is connected to the inside of the second filter assembly (5). 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) near 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 fuel is fixedly connected to the filter (31). The end of the first delivery pipe (32) near the filter cartridge (33) is connected to the filter cartridge (33). The filter (31) is fixedly connected to a connecting pipe (34) at one end away from the first delivery pipe (32), and the connecting pipe (34) is connected to the filter (31). The other end of the connecting pipe (34) is connected to the second filter assembly (5). The filter (31) is also fixedly connected to a fixed box (36) and a drive box (37) on the side near the oil inlet pipe (12). The cleaning component (4) is set in the fixed box (36). A turbine is fixedly connected in 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 in the fixed box (36), and the drive gear (39) meshes with the cleaning component (4) in the fixed box (36). The cleaning component (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) meshes with the drive gear (39). The synchronous gear ring (41) is provided with multiple sets of first synchronous gears (42), and each set of first synchronous gears (42) meshes with the inner wall of the synchronous gear ring (41). A second synchronous gear (43) is provided between the multiple sets of first synchronous gears (42), and the second synchronous gear (43) meshes with the multiple sets of first synchronous gears (42). The multiple sets of first synchronous gears (42) and second synchronous gears (43) are rotatably connected to the fixed box (36). Each of the first set of synchronous gears (42) is fixedly connected to a synchronous rod (44) at one end near the inside of the filter (31). Each of the second synchronous gears (43) is fixedly connected to a reciprocating screw (45) at one end near the inside of the filter (31). The other ends of the reciprocating screw (45) and the multiple synchronous rods (44) are rotatably connected to the inner wall of the filter (31) on the other side. A cleaning disc (46) for cleaning the inner wall of the filter cylinder (33) is threaded onto the reciprocating screw (45), and the cleaning disc (46) is slidably connected to the multiple synchronous rods (44). One of the synchronizing rods (44) is fixedly connected to a synchronizing disc (47) at the end away from the first synchronizing gear (42). The synchronizing disc (47) is rotatably connected to the inner wall of the filter (31). A push rod is fixedly connected to the top of the synchronizing disc (47). A grooved wheel (48) is rotatably connected to the inner wall of the filter (31). Multiple sets of slots are opened on the grooved wheel (48). The push rod at the top of the synchronizing disc (47) alternately slides and engages with the multiple sets of slots on the grooved wheel (48). The second filter assembly (5) includes a connecting cylinder (51), which is fixedly connected to the pump body (1). The impeller (23) is rotatably connected to the connecting cylinder (51). A filter disc (52) is rotatably connected in the connecting cylinder (51). 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). The side of the cleaning groove (53) away from the filter disc (52) is fixed to the first filter assembly (3). Multiple sets of evenly distributed filter holes (54) are opened on the side wall of the cleaning groove (53).

2. The integrated fuel pump according to claim 1, characterized in that: The drive box (37) is also 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). A solenoid valve is installed in the second delivery pipe (38).

3. The integrated fuel pump according to claim 2, characterized in that: The filter (31) is also fixedly connected to a first discharge pipe (35) on the side 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 connected to the filter cylinder (33) inside the filter (31).

4. The integrated fuel pump according to claim 3, characterized in that: The groove wheel (48) has multiple sets of connecting ports (49) adapted to the first discharge pipe (35), and the multiple sets of connecting ports (49) are alternately connected to the first discharge pipe (35).

5. An integrated fuel pump according to claim 4, characterized in that: A second discharge port (55) is provided on the side of the cleaning tank (53) away from the filter hole (54), and the second discharge port (55) is located on the 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 sealing plate (57) is also slidably connected in the cleaning tank (53), and a return spring (58) is fixedly connected to the bottom of the sealing plate (57). 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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