Automobile electric fuel pump

Abstract

The invention discloses an automobile electric fuel pump, which belongs to the field of fuel pumps and comprises a shell, a bottom cover is detachably mounted at the bottom of the shell, and an oil inlet pipe is fixedly mounted on the bottom cover; the device further comprises a collecting assembly, the collecting assembly comprises two sets of transverse pipes fixedly installed on one side of the oil inlet pipe, the two sets of transverse pipes are fixedly installed on the upper side and the lower side of the bottom cover, and a collecting box is detachably installed on the sides, away from the oil inlet pipe, of the two sets of transverse pipes. A through opening matched with the transverse pipe is formed in the side wall of the collecting box, a first filter screen is fixedly installed in an inner cavity of the collecting box, and magnetic suction rods are evenly and fixedly installed in the inner cavity of the collecting box. According to the self-cleaning fuel pump, impurities removed from the filter screen can be filtered and collected, the continuous and efficient self-cleaning function is achieved, the working reliability of the fuel pump is improved, the service life of the fuel pump is prolonged, and meanwhile inconvenience and cost caused by frequent maintenance are reduced.

Description

Technical Field

[0001] The present invention relates to the field of fuel pumps, and more particularly to an electric fuel pump for an automobile. Background Art

[0002] In modern automobile fuel supply systems, the electric fuel pump is a key component that ensures a stable and adequate supply of fuel to the engine. To prevent impurities in the fuel from entering key components such as the fuel pump and injectors, filters are usually installed in the fuel inlet pipe. However, as time goes by, these filters will gradually accumulate impurities, causing their permeability to decrease, which in turn affects the efficiency of the fuel pump and the performance of the entire fuel system.

[0003] Current fuel filtration systems rely primarily on regular manual filter replacement or cleaning to maintain their functionality. This approach not only increases maintenance costs, but can also lead to premature fuel pump failure, reduced engine performance, and even damage due to filter clogs. Furthermore, in some cases, especially when driving in harsh environments (such as dusty or sandy road conditions), filters clog more quickly, further exacerbating the frequency and severity of these problems.

[0004] Under existing technical conditions, when the filter in the oil inlet pipe is clogged with impurities, the problem must be solved by stopping the vehicle, disassembling it, and manually cleaning or replacing the filter. This method is not only time-consuming and labor-intensive, but also fails to achieve real-time and effective self-cleaning. In particular, when sudden filter blockage occurs during vehicle operation, it can cause serious safety hazards. At the same time, as the filter becomes clogged, insufficient fuel supply can lead to incomplete engine combustion, which in turn causes problems such as unstable power output, increased fuel consumption, and worsening emissions. Summary of the Invention

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide an automobile electric fuel pump that can filter and collect impurities removed from the filter net, thereby realizing a continuous and efficient self-cleaning function, which not only improves the working reliability of the fuel pump and extends its service life, but also reduces the inconvenience and cost caused by frequent maintenance.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] An electric fuel pump for an automobile comprises a housing, a bottom cover being detachably mounted on the bottom of the housing, and an oil inlet pipe being fixedly mounted on the bottom cover;

[0008] Also includes:

[0009] The collecting assembly comprises two groups of transverse tubes fixedly mounted on one side of the oil inlet pipe, the two groups of transverse tubes fixedly mounted on the upper and lower sides of the bottom cover, the two groups of transverse tubes are detachably mounted with a collecting box on the side away from the oil inlet pipe, the side wall of the collecting box is provided with a through opening adapted to the transverse tube, a filter is fixedly mounted on the inner cavity of the collecting box, a magnetic rod is evenly fixedly mounted on the inner cavity of the collecting box, a rotating plate is rotatably mounted in the oil inlet pipe, a conical frame fixedly mounted on the upper side of the rotating plate and the oil inlet pipe is fixedly provided with a fan blade, the fan blade is rotatably mounted with the conical frame, a belt is installed for transmission between the fan blade and the rotating plate, and a cleaning assembly is provided on the upper side of the conical frame.

[0010] Furthermore, the cleaning assembly includes a brush plate 1 arranged above the conical frame, the brush plate 1 is rotatably mounted with the conical frame, the brush plate 1 and the rotating shaft of the fan blade are fixedly mounted with bevel gears, two sets of the bevel gears are meshed and installed, and the two sets of the bevel gears are both located in the conical frame, and the top of the brush plate 1 is contacted with a filter screen 2, and the filter screen 2 is fixedly mounted on the inner cavity of the oil inlet pipe;

[0011] An inner circle is fixedly installed in the inner cavity of the shell, an impeller is rotatably installed in the inner circle, an electric motor is fixedly installed above the inner circle, and an output end of the electric motor is fixedly installed with the impeller.

[0012] Furthermore, a circular tube is fixedly installed on the top of the outer wall of the oil inlet pipe, and the circular tube is arranged in sealing contact with the inside of the shell. A circular plate is provided on the upper side of the second filter screen, and the circular plate is arranged in sealing contact with the inner cavity wall of the oil inlet pipe. Guide rods are evenly fixedly installed on the inner cavity wall of the oil inlet pipe, and the circular plates are slidably installed with each group of the guide rods. An elastic rope is fixedly installed between the circular plate and the second filter screen, and the elastic rope is in a stretched state in its initial state.

[0013] Furthermore, a baffle 1 is fixedly installed in the upper opening, a circular frame is provided on one side of the baffle 1, the circular frame is rotatably installed in the inner cavity of the collection box, a brush plate 2 is evenly fixedly installed on the outer wall of the circular frame, and the filter screen 1 is provided in contact with the adjacent brush plate 2.

[0014] Furthermore, semicircular blocks are evenly and fixedly installed in the inner cavity of the circular frame, and the inner cavity of the circular frame is provided with a counterweight ball, and the counterweight ball is provided in contact with the adjacent semicircular blocks.

[0015] Furthermore, a push rod is threadedly installed on the side wall of the collection box away from the side of the cross tube, and a limit plate is provided on the side of the push rod close to the cross tube. The limit plate is slidably installed with the top of the collection box, and the limit plate is provided in contact with the top of the upper cross tube. A telescopic spring is fixedly installed between the limit plate and the top wall of the collection box.

[0016] Furthermore, a movable plate is slidably installed on one side of the collection box close to the cross tube, the oil inlet pipe is arranged in contact with the bottom of the lower cross tube, and a return spring is fixedly installed between the movable plate and the bottom of the collection box. The telescopic spring and the return spring are both in a compressed state in their initial state.

[0017] Furthermore, a second baffle is provided on the lower side of the rotating plate, and the second baffle is fixedly mounted to the inner cavity wall of the oil inlet pipe, and the second baffle covers half of the rotating plate.

[0018] Furthermore, a protection frame is provided on the outer side of the belt, the protection frame is fixedly mounted to the inner cavity wall of the oil inlet pipe, and the rotating plate and the fan blades are both rotatably mounted to the protection frame.

[0019] Furthermore, a sealing gasket is fixedly installed on one side of the collecting box that contacts the bottom cover and the transverse tube.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) This solution can achieve the goal of sucking the impurities removed from the bottom of the filter screen 2 by the brush plate 1 into the upper horizontal pipe through the rotation of the fan blade. The impurities will flow with the fuel into the collection box and be filtered through the filter screen 1. The filtered impurities will be collected in the inner cavity of the collection box. The filtered fuel will flow back to the oil inlet pipe through the lower horizontal pipe again, and the impurities removed from the filter screen 2 can be filtered and collected, realizing a continuous and efficient self-cleaning function, which not only improves the working reliability of the fuel pump and extends its service life, but also reduces the inconvenience and cost caused by frequent maintenance.

[0022] (2) This solution uses the upper arrangement of each group of magnetic rods. The magnetic rods will absorb the metal particles in the impurities filtered out by the filter screen onto its outer wall, thereby separating the impurities and metal particles. During the subsequent cleaning of the impurities in the collection box, the staff can intuitively find the metal debris. By analyzing the collected metal particles, it can serve as an early warning signal to help identify whether there is abnormal wear or other faults in the engine or other fuel system components. This is crucial for taking corrective measures in a timely manner to prevent small problems from developing into major faults.

[0023] (3) In this solution, when the fuel pump stops working, the elastic rope will pull the circular plate downward to squeeze the fuel below, which plays a backwashing role. Through the reverse flow of the fuel, impurities attached to the filter screen 2 can be easily flushed away from its surface, achieving clearing and further improving the cleaning effect. At the same time, since the elastic rope is in a stretched state in the initial state, the elastic rope pulls the circular plate tightly against the inner wall of the oil inlet pipe. When the elastic rope pulls the circular plate downward to the initial position, it will drive the circular plate to briefly hit the inner wall of the oil inlet pipe and generate vibration. The shock wave will be transmitted to the filter screen 2, which can reduce the adhesion of impurities on the filter screen 2, so as to facilitate its removal, and effectively improve the cleaning efficiency.

[0024] (4) When the fuel enters the collection box, the present invention pushes the brush plate 2 to drive the circular frame to rotate. When the brush plate 2 rotates, it cleans the top slope of the filter screen 1 and drops it into the inner cavity of the collection box, thereby clearing the blockage of the filter screen 1 and effectively improving the fluidity of the fuel. At the same time, the rotation of the circular frame drives the groups of semicircular blocks inside it to move synchronously. Under the gravity of the counterweight ball itself, the counterweight ball will roll between the groups of semicircular blocks that rotate to the lower side, which can cause vibration to the circular frame. The shock wave will be transmitted to the brush plate 2, which can shake off the impurities remaining on the sealing gasket, improve the cleaning effect, and avoid the residual impurities from causing secondary pollution to the filter screen 1, thereby effectively improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the front side of the present invention;

[0026] Figure 2 is a cross-sectional view of the housing of the present invention;

[0027] Figure 3 It is an overall cross-sectional view of the present invention;

[0028] Figure 4 For the present invention Figure 3 A magnified view of the structure of the middle part A;

[0029] Figure 5 For the present invention Figure 3 A magnified view of the structure of the middle B section;

[0030] Figure 6 For the present invention Figure 5 Enlarged view of the structure of part C in the middle.

[0031] Description of the numbers in the figure:

[0032] 1. Shell; 2. Bottom cover; 3. Oil inlet pipe; 4. Horizontal pipe; 5. Collecting box; 6. Through port; 7. Rotating plate; 8. Counterweight ball; 9. Fan blade; 10. Filter screen 1; 11. Conical frame; 12. Protective frame; 13. Brush plate 1; 14. Filter screen 2; 15. Conical gear; 16. Baffle 2; 17. Baffle 1; 18. Inner circle; 19. Impeller; 20. Motor; 21. Belt; 22. Round plate; 23. Elastic rope; 24. Sealing gasket; 25. Guide rod; 26. Round tube; 27. Magnetic rod; 28. Push rod; 29. ​​Limit plate; 30. Telescopic spring; 31. Movable plate; 32. Reset spring; 33. Round frame; 34. Brush plate 2; 35. Semicircular block. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 6 , an automobile electric fuel pump, comprising a housing 1, a bottom cover 2 being detachably mounted on the bottom of the housing 1, and an oil inlet pipe 3 being fixedly mounted on the bottom cover 2;

[0035] Also includes:

[0036] The collecting assembly includes two groups of transverse tubes 4 fixedly mounted on one side of the oil inlet pipe 3, the two groups of transverse tubes 4 are fixedly mounted on the upper and lower sides of the bottom cover 2, and the two groups of transverse tubes 4 are detachably mounted with a collecting box 5 on the side away from the oil inlet pipe 3. A through opening 6 is provided on the side wall of the collecting box 5 that is compatible with the transverse tube 4. A filter screen 10 is fixedly mounted on the inner cavity of the collecting box 5, and a magnetic rod 27 is evenly fixedly mounted on the inner cavity of the collecting box 5. A rotating plate 7 is rotatably mounted in the oil inlet pipe 3, and a conical frame 11 fixedly mounted on the upper side of the rotating plate 7 is provided. A fan blade 9 is provided in the upper transverse tube 4, and the fan blade 9 is rotatably mounted with the conical frame 11. A belt 21 is installed for transmission between the fan blade 9 and the rotating plate 7, and a cleaning assembly is provided on the upper side of the conical frame 11.

[0037] The cleaning assembly includes a brush plate 13 arranged above the conical frame 11. The brush plate 13 is rotatably mounted on the conical frame 11. Conical gears 15 are fixedly mounted on the rotating shafts of the brush plate 13 and the fan blades 9. The two sets of conical gears 15 are meshed and installed. The two sets of conical gears 15 are both located in the conical frame 11. The top of the brush plate 13 is in contact with a filter screen 14. The filter screen 14 is fixedly mounted on the inner cavity of the oil inlet pipe 3.

[0038] An inner circle 18 is fixedly installed in the inner cavity of the shell 1 , an impeller 19 is rotatably installed in the inner circle 18 , an electric motor 20 is fixedly installed above the inner circle 18 , and an output end of the electric motor 20 is fixedly installed to the impeller 19 .

[0039] First, when the car is driving, the car's electric fuel pump will supply fuel to the engine according to the car's driving status. When the engine needs to be supplied with fuel, the motor 20 will start working to drive the impeller 19 to rotate rapidly in the inner circle 18. The inner circle 18 will generate suction to the fuel tank through the oil inlet pipe 3, and the fuel in the fuel tank will be drawn into the shell 1 through the oil inlet pipe 3, and finally discharged through the oil outlet pipe at the top to supply fuel to the engine. When the fuel in the fuel tank enters the oil inlet pipe 3, the power of the fuel flow will drive the rotating plate 7 to rotate. At the same time, the rotating plate 7 rotates and drives the fan blades 9 to rotate through the belt 21. The fan blades 9 As the brush plate 13 rotates, the two sets of meshing bevel gears 15 cooperate to drive the brush plate 13 to rotate. The fuel flows through the fuel inlet pipe 3 and is filtered through the filter screen 14 before being discharged into the housing 1. The filter screen 14 filters impurities in the fuel. The rotation of the brush plate 13 can clean the bottom of the filter screen 14, thereby removing impurities filtered by the bottom of the filter screen 14 and preventing the filter screen 14 from clogging. This ensures that the fuel can flow smoothly into the fuel pump, thereby improving the fuel supply efficiency and helping to maintain the pressure stability of the entire fuel system, avoiding problems caused by insufficient fuel supply or pressure fluctuations.

[0040] As the fan blades 9 rotate, the fan blades 9 generate suction on the lower side of the filter screen 2 14 in the oil inlet pipe 3 through the upper transverse tube 4, which can suck the impurities cleaned from the bottom of the filter screen 2 14 by the brush plate 13 into the upper transverse tube 4. The impurities will be pushed to the right by the fan blades 9 in the upper transverse tube 4 along with the fuel, and flow into the collection box 5 through the upper opening 6. The fuel flowing in the collection box 5 will be filtered by the filter screen 10, and the filtered impurities will be collected in the inner cavity of the collection box 5. Due to the wear of the internal parts of the engine, the wear of the relevant components in the fuel system, and the external pollution, it is inevitable that metal debris will remain in the fuel during the manufacturing or maintenance of the vehicle, thereby Metal debris may be present in the impurities filtered by the second filter 14 for the fuel. Through the upper arrangement of each group of magnetic rods 27, the magnetic rods 27 will adsorb the metal particles in the impurities filtered by the first filter 10 onto its outer wall, thereby separating the impurities and metal particles. During the subsequent cleaning process of the impurities in the collection box 5, the staff can intuitively find the metal debris. By analyzing the collected metal particles, it can serve as an early warning signal to help identify whether there is abnormal wear or other faults in the engine or other fuel system components. This is crucial for taking corrective measures in a timely manner and can prevent small problems from developing into major faults.

[0041] After the fan blades 9 suck the fuel in the oil inlet pipe 3 and push it into the collection box 5, the fuel is filtered by the filter screen 10 and will flow back into the oil inlet pipe 3 through the lower horizontal pipe 4 and flow upward. Through the cooperation of the fan blades 9 and the filter screen 10, the impurities removed from the filter screen 2 14 can be filtered and collected, realizing a continuous and efficient self-cleaning function, which not only improves the working reliability of the fuel pump and extends its service life, but also reduces the inconvenience and cost caused by frequent maintenance.

[0042] like Figure 2 and Figure 4 As shown, a circular tube 26 is fixedly mounted on the top of the outer wall of the oil inlet pipe 3, and the circular tube 26 is arranged in sealing contact with the inside of the shell 1. A circular plate 22 is provided on the upper side of the second filter screen 14, and the circular plate 22 is arranged in sealing contact with the inner cavity wall of the oil inlet pipe 3. Guide rods 25 are evenly fixedly mounted on the inner cavity wall of the oil inlet pipe 3, and the circular plates 22 are slidably mounted with each group of guide rods 25. An elastic rope 23 is fixedly mounted between the circular plate 22 and the second filter screen 14, and the elastic rope 23 is in a stretched state in its initial state.

[0043] When the motor 20 drives the impeller 19 to rotate, the impeller 19 will generate suction on the circular tube 26 and the oil inlet pipe 3. Under the action of the suction, the circular plate 22 will slide upward on the inner wall of the oil inlet pipe 3. When the circular plate 22 moves upward, the elastic rope 23 will be stretched. At the same time, the circular plate 22 will slide upward along the rod wall of the guide rod 25. When the circular plate 22 slides upward and moves out of the inner cavity of the oil inlet pipe 3, it will enter the circular tube 26. At this time, the circular tube 26 and the inner cavity of the oil inlet pipe 3 will be connected, and the fuel in the oil inlet pipe 3 will enter the circular tube 26 and be transported upward. When the vehicle is idling or in a low load state, the engine has a low demand for fuel, and the fuel pump will stop working. The motor 20 will drive the impeller 19 to stop rotating. At this time, there is no suction on the circular tube 26 and the oil inlet pipe 3. Under the action of the elastic rope 23, the elastic rope 23 returns to its initial state and pulls the circular plate 22 to move downward. The setting of the guide rod 25 can achieve The oil filter 14 is a kind of filter that is used for cleaning the oil filter 14, and the oil filter 14 is a kind of filter that is used for cleaning the oil filter 14.

[0044] like Figure 5 and Figure 6 As shown, a baffle 17 is fixedly installed in the upper opening 6, a circular frame 33 is provided on one side of the baffle 17, the circular frame 33 is rotatably installed in the inner cavity of the collection box 5, and a brush plate 2 34 is evenly fixedly installed on the outer wall of the circular frame 33, and the filter screen 10 is provided in contact with the adjacent brush plate 2 34.

[0045] Semicircular blocks 35 are evenly and fixedly installed in the inner cavity of the circular frame 33 . The inner cavity of the circular frame 33 is provided with counterweight balls 8 . The counterweight balls 8 are provided in contact with adjacent semicircular blocks 35 .

[0046] When the fan blade 9 rotates and absorbs the fuel in the oil inlet pipe 3 through the upper horizontal pipe 4 and pushes it to the right side into the collection box 5, the circular frame 33 is blocked by the setting of the baffle 17, so that the fuel flows through the lower side of the baffle 17 to the collection box 5 and is directly discharged on the brush plate 2 34 on the lower side of the circular frame 33. It can be achieved that the fuel will push the brush plate 2 34 to drive the circular frame 33 to rotate. When the brush plate 2 34 rotates, it will clean the top inclined surface of the filter screen 10, and the impurities filtered on the inclined surface can be cleaned and discharged into the inner cavity of the collection box 5, which plays a role in cleaning the filter screen 10. The clearing effect can effectively improve the fluidity of the fuel. At the same time, when the circular frame 33 rotates, the circular frame 33 will drive the groups of semicircular blocks 35 therein to move synchronously. Under the gravity of the counterweight ball 8 itself, the counterweight ball 8 will roll between the groups of semicircular blocks 35 that rotate to the lower side, which can generate vibrations on the circular frame 33. The shock wave will be transmitted to the brush plate 2 34, which can shake off the impurities remaining on the sealing gasket 24, improve the cleaning effect, and avoid the residual impurities from causing secondary pollution to the filter 10, thereby effectively improving the cleaning effect.

[0047] like Figure 5 As shown, a push rod 28 is threadedly installed on the side wall of the collecting box 5 away from the cross tube 4, and a limit plate 29 is provided on the side of the push rod 28 close to the cross tube 4. The limit plate 29 is slidably installed with the top of the collecting box 5, and the limit plate 29 is provided in contact with the top of the upper cross tube 4. A telescopic spring 30 is fixedly installed between the limit plate 29 and the top wall of the collecting box 5.

[0048] A movable plate 31 is slidably installed on one side of the collecting box 5 close to the cross tube 4. The oil inlet pipe 3 is arranged in contact with the bottom of the lower cross tube 4. A return spring 32 is fixedly installed between the movable plate 31 and the bottom of the collecting box 5. The telescopic spring 30 and the return spring 32 are both in a compressed state in their initial state.

[0049] When cleaning regularly, there is no need to disassemble or replace the filter screen 214. You only need to disassemble the collection box 5. When the collection box 5 needs to be disassembled to clean the impurities inside it, the push rod 28 is deflected 90 degrees. The end of the push rod 28 that contacts the limit plate 29 will move away from the limit plate 29. Under the action of the telescopic spring 30, the telescopic spring 30 returns to its initial state and pushes the limit plate 29 to move to the right at the top of the collection box 5. The limit plate 29 will move out of the top of the upper cross tube 4. At this time, under the action of the return spring 32, the return spring 32 returns to its initial state and pushes the collection box 5 downward. At this time, the collection box 5 can be disassembled to clean the impurities and metal particles inside it. When the collection box 5 is installed after cleaning is completed, The collecting box 5 is inserted and moved upward from the bottom of the bottom cover 2. When the movable plate 31 contacts the bottom of the lower cross tube 4, it continues to push the collecting box 5 upward to squeeze the return spring 32, so that the limit plate 29 moves to the top of the upper cross tube 4, and then the push rod 28 is rotated to deflect 90 degrees, so that the top of the push rod 28 pushes the limit plate 29 to move to the left and squeezes the telescopic spring 30, so that the limit plate 29 moves to the top of the upper cross tube 4, and then the thrust applied to the collecting box 5 is cancelled. Under the action of the return spring 32, the return spring 32 will push the collecting box 5 downward so that the limit plate 29 is close to the top of the upper cross tube 4. At this time, the installation is completed, which facilitates installation and disassembly, effectively reduces costs and facilitates maintenance, thereby effectively improving the use effect.

[0050] like Figure 4 and Figure 5 As shown, a second baffle 16 is provided on the lower side of the rotating plate 7 , and the second baffle 16 is fixedly installed with the inner wall of the oil inlet pipe 3 , and the second baffle 16 covers half of the rotating plate 7 .

[0051] A protective frame 12 is provided on the outer side of the belt 21 . The protective frame 12 is fixedly mounted to the inner wall of the oil inlet pipe 3 . The rotating plate 7 and the fan blades 9 are both rotatably mounted to the protective frame 12 .

[0052] A sealing gasket 24 is fixedly mounted on the side of the collecting box 5 that contacts the bottom cover 2 and the transverse pipe 4 .

[0053] The baffle 2 16 blocks half of the rotating plate 7, and the fuel flowing upward in the oil inlet pipe 3 and passing through the baffle 2 16 can stably drive the rotating plate 7 to rotate. The provision of the protective frame 12 can achieve isolation between the belt 21 and the fuel in the oil inlet pipe 3, and the provision of the conical frame 11 can achieve isolation between the two sets of bevel gears 15 and the fuel in the oil inlet pipe 3. The provision of the sealing gasket 24 can improve the sealing performance between the collecting box 5 and the bottom cover 2 and the two sets of horizontal pipes 4 after installation.

[0054] Working principle: First, when the car is driving, the car's electric fuel pump will turn on and off according to the car's driving status. When it is necessary to supply fuel to the engine, the motor 20 will drive the impeller 19 to rotate quickly to generate suction on the circular tube 26 and the oil inlet pipe 3, and will attract the circular plate 22 to move upward into the circular tube 26. At this time, the circular tube 26 is connected to the oil inlet pipe 3, and the oil inlet pipe 3 will absorb the fuel in the fuel tank and discharge it into the shell 1, and finally be discharged through the oil outlet pipe at the top to supply fuel to the engine. When the fuel flows in the oil inlet pipe 3, it will drive the rotating plate 7 to rotate, and the rotating plate 7 will drive the fan blades 9 and the brush plate 13 to rotate. The fuel flows upward in the oil inlet pipe 3 and will be filtered through the filter screen 2 14. The rotation of the brush plate 13 will clean up the impurities filtered at the bottom of the filter screen 2 14 to prevent blockage. The fan blades 9 will extract the impurities cleaned by the brush plate 13 into the collection box 5, and then filter through the filter screen 10 again When the fuel is discharged into the oil inlet pipe 3 and the fuel flows into the collection box 5, the round frame 33 is driven to rotate by the brush plate 23 and the rotation of the brush plate 23 will clean the impurities on the top inclined surface of the filter screen 10. During the rotation of the round frame 33, the counterweight ball 8 rolls on the semicircular block 35 inside it, which will generate vibration and shake off the impurities adhering to the brush plate 23. Through the setting of the magnetic rod 27, the metal particles in the impurities can be adsorbed and separated. When the electric fuel pump stops working, the elastic rope 23 will pull the circular plate 22 downward to backwash the filter screen 2 14, and at the same time achieve a brief impact on the oil inlet pipe 3, which will vibrate the filter screen 2 14 and remove the impurities on the filter screen 2 14. When the collection box 5 needs to be disassembled for cleaning, the push rod 28 is rotated to make the limit plate 29 move out of the top of the upper cross pipe 4, and the collection box 5 can be removed with the cooperation of the return spring 32.

[0055] The above are only preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An electric fuel pump for an automobile, comprising a housing (1), a bottom cover (2) being detachably mounted on the bottom of the housing (1), and an oil inlet pipe (3) being fixedly mounted on the bottom cover (2); Its characteristics are: Also includes: A collecting assembly, the collecting assembly comprises two groups of transverse tubes (4) fixedly mounted on one side of the oil inlet pipe (3), the two groups of transverse tubes (4) fixedly mounted on the upper and lower sides of the bottom cover (2), a collecting box (5) detachably mounted on the side of the two groups of transverse tubes (4) away from the oil inlet pipe (3), a through opening (6) adapted to the transverse tube (4) is opened on the side wall of the collecting box (5), a filter screen (10) is fixedly mounted in the inner cavity of the collecting box (5), and the collecting box (5) A magnetic rod (27) is evenly fixedly installed in the inner cavity of the oil inlet pipe (3); a rotating plate (7) is rotatably installed in the oil inlet pipe (3); a conical frame (11) fixedly installed with the oil inlet pipe (3) is provided on the upper side of the rotating plate (7); a fan blade (9) is provided in the upper side of the horizontal tube (4); the fan blade (9) is rotatably installed with the conical frame (11); a belt (21) is installed between the fan blade (9) and the rotating plate (7); and a cleaning component is provided on the upper side of the conical frame (11).

2. The electric fuel pump for automobile according to claim 1, characterized in that: The cleaning assembly includes a brush plate (13) arranged above the conical frame (11), the brush plate (13) and the conical frame (11) are rotatably mounted, the brush plate (13) and the rotating shaft of the fan blade (9) are fixedly mounted with a conical gear (15), two groups of the conical gears (15) are meshed and mounted, and the two groups of the conical gears (15) are both located in the conical frame (11), the top of the brush plate (13) is contacted with a filter screen (14), and the filter screen (14) is fixedly mounted in the inner cavity of the oil inlet pipe (3); An inner circle (18) is fixedly mounted in the inner cavity of the housing (1), an impeller (19) is rotatably mounted in the inner circle (18), an electric motor (20) is fixedly mounted above the inner circle (18), and an output end of the electric motor (20) is fixedly mounted to the impeller (19).

3. The automotive electric fuel pump according to claim 2, characterized in that: A circular tube (26) is fixedly mounted on the top of the outer wall of the oil inlet pipe (3), and the circular tube (26) is arranged in sealing contact with the inner wall of the shell (1). A circular plate (22) is arranged on the upper side of the second filter screen (14), and the circular plate (22) is arranged in sealing contact with the inner wall of the oil inlet pipe (3). Guide rods (25) are evenly fixedly mounted on the inner wall of the oil inlet pipe (3), and the circular plates (22) are slidably mounted with each group of the guide rods (25). An elastic rope (23) is fixedly mounted between the circular plate (22) and the second filter screen (14), and the elastic rope (23) is in a stretched state in its initial state.

4. The automotive electric fuel pump according to claim 1, characterized in that: A baffle plate 1 (17) is fixedly installed in the upper opening (6), a circular frame (33) is provided on one side of the baffle plate 1 (17), the circular frame (33) is rotatably installed in the inner cavity of the collection box (5), a brush plate 2 (34) is evenly fixedly installed on the outer wall of the circular frame (33), and the filter screen 1 (10) is provided in contact with the adjacent brush plate 2 (34).

5. The automotive electric fuel pump according to claim 4, characterized in that: Semicircular blocks (35) are evenly and fixedly installed in the inner cavity of the circular frame (33), and a counterweight ball (8) is provided in the inner cavity of the circular frame (33), and the counterweight ball (8) is provided in contact with the adjacent semicircular block (35).

6. The automotive electric fuel pump according to claim 1, characterized in that: A push rod (28) is threadedly mounted on the side wall of the collecting box (5) away from the transverse tube (4); a limit plate (29) is provided on the side of the push rod (28) close to the transverse tube (4); the limit plate (29) is slidably mounted on the top of the collecting box (5); the limit plate (29) is in contact with the top of the transverse tube (4) on the upper side; a telescopic spring (30) is fixedly mounted between the limit plate (29) and the top wall of the collecting box (5).

7. The automotive electric fuel pump according to claim 6, characterized in that: A movable plate (31) is slidably mounted on one side of the collecting box (5) close to the transverse tube (4); the oil inlet pipe (3) is arranged in contact with the bottom of the transverse tube (4) at the lower side; a return spring (32) is fixedly mounted between the movable plate (31) and the bottom of the collecting box (5); and the telescopic spring (30) and the return spring (32) are both in a compressed state in their initial state.

8. The automotive electric fuel pump according to claim 1, characterized in that: A second baffle (16) is provided on the lower side of the rotating plate (7), and the second baffle (16) is fixedly mounted on the inner cavity wall of the oil inlet pipe (3), and the second baffle (16) covers half of the rotating plate (7).

9. The automotive electric fuel pump according to claim 1, characterized in that: A protective frame (12) is provided on the outer side of the belt (21), and the protective frame (12) is fixedly mounted on the inner wall of the oil inlet pipe (3). The rotating plate (7) and the fan blade (9) are both rotatably mounted on the protective frame (12).

10. The automotive electric fuel pump according to claim 1, characterized in that: A sealing gasket (24) is fixedly mounted on the side of the collecting box (5) that contacts the bottom cover (2) and the transverse pipe (4).

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