Turbo type pump core fuel pump assembly

Abstract

The utility model relates to a turbo type pump core fuel oil pump assembly, which relates to the technical field of fuel oil pumps, and comprises a pump body, a filtering component used for filtering fuel oil is arranged on the pump body, the filtering component comprises a filtering ring, a primary filter screen and a secondary filter screen are arranged in the filtering ring, a sealing piece is connected between the primary filter screen and the secondary filter screen in a sealing way, and the primary filter screen and the secondary filter screen are arranged in the filtering ring. Two baffles are movably connected to the two sides of the first-stage filter screen, and the two sides, away from the first-stage filter screen, of the two baffles are attached to the filtering ring. When fuel enters the sealing element through the first-stage filter screen and is deeply filtered through the second-stage filter screen, the first-stage filter screen is blocked, the pressure in the sealing element is reduced, the pressure difference pushes the baffle to overturn backwards, the baffle is attached to the side edge of the sealing element, the fuel is filtered through the bypass second-stage filter screen, and the fuel is filtered through the bypass second-stage filter screen. And the risk that the working temperature of components rises and engine faults are increased due to the fact that fuel oil cannot normally circulate is avoided.

Description

A turbine-type fuel pump assembly Technical Field

[0001] This application relates to the field of fuel pump technology, and in particular to a turbine-type fuel pump assembly. Background Technology

[0002] The turbocharger fuel pump assembly is an important component of the vehicle's fuel supply system. Its function is to pump fuel from the fuel tank to the fuel supply line and then to the engine. Ensuring the normal operation of the fuel pump is crucial for the normal operation of the entire fuel supply system and even the entire vehicle.

[0003] In existing fuel pump assemblies, due to impurities in the fuel, the fuel is typically filtered by filter paper inside the filter. However, after prolonged use, the filter can become clogged. When the filter is clogged, the fuel pump needs to overcome greater resistance to draw fuel, which significantly increases the workload on the fuel pump. Under this high load for extended periods, the fuel pump motor is prone to overheating, and internal components such as the impeller can be damaged due to excessive wear, shortening the fuel pump's lifespan and potentially causing premature failure, thus affecting the normal operation of the vehicle. Summary of the Invention

[0004] This application provides a turbine-type fuel pump assembly, which can improve the fuel filtration problem in related technologies where the filter paper inside the filter filters the fuel, but after long-term use, the filter will become clogged. After the filter is clogged, the fuel pump needs to overcome greater resistance to draw fuel, which will greatly increase the workload of the fuel pump. Under such high load conditions for a long time, the motor of the fuel pump is prone to overheating.

[0005] This application provides a turbine-type fuel pump assembly, including a pump body, characterized in that: a filter assembly for fuel filtration is provided on the pump body, the filter assembly includes a filter ring, a primary filter screen and a secondary filter screen are provided inside the filter ring, a sealing element is sealed between the primary filter screen and the secondary filter screen, and two baffles are movably connected to both sides of the primary filter screen, with the two baffles on the sides away from the primary filter screen abutting against the filter ring.

[0006] By adopting the above technical solution, when the fuel pump is running, the fuel inside the oil pan is drawn into the fuel pump cavity through the filter ring as the rotor rotates. The fuel enters the seal through the primary filter and undergoes deep filtration through the secondary filter. However, after prolonged filtration, the primary filter may become clogged. At this time, the pressure inside the seal increases, and the pressure pushes the baffle to flip backward, so that the baffle fits against the side of the seal. The fuel is then filtered through the bypass secondary filter, avoiding the risk of increased component operating temperature and engine failure caused by the inability of fuel to flow normally.

[0007] Optionally, the sealing element has horizontal grooves on both sides near the primary filter screen, and a rotating rod is provided inside the horizontal groove. The baffle is fixedly connected to the rotating rod, and a second elastic element is sleeved on both ends of the rotating rod. One end of the second elastic element is fixedly connected to the primary filter screen, and the other end of the second elastic element is fixedly connected to the baffle.

[0008] Optionally, a guide plate is fixedly connected to the side of the primary filter screen near the secondary filter screen, and the guide plates are arranged in an array about the primary filter screen, with the end of the guide plate away from the primary filter screen attached to the secondary filter screen.

[0009] Optionally, a handle is provided on the side of the primary filter screen away from the guide plate. The handle is U-shaped, and the vertical arm of the handle passes through the primary filter screen and the secondary filter screen.

[0010] Optionally, a limiting ring is provided on the outer wall of the vertical arm of the handle, the limiting ring is located between the primary filter and the secondary filter, and the handle is pre-compressed with a first elastic element between the limiting ring and the primary filter.

[0011] Optionally, a pressure sensor is provided inside the seal.

[0012] Optionally, the outer wall of the pump body is provided with an oil delivery hole, and the filter ring is threadedly fixed to the oil delivery hole.

[0013] Optionally, a sealing ring is provided at the threaded connection between the filter ring and the oil inlet, and the sealing ring is made of rubber.

[0014] Optionally, a drive shaft is provided inside the pump body, and a connecting plate is fixedly connected to one end of the pump body. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of the turbine-type fuel pump assembly provided in an embodiment of this application;

[0016] Figure 2 is a schematic diagram of the frame structure of the turbine-type fuel pump assembly provided in an embodiment of this application;

[0017] Figure 3 is a schematic diagram of the filter assembly structure of the turbine-type fuel pump assembly provided in an embodiment of this application;

[0018] Figure 4 is a partial cross-sectional view of the filter assembly of the turbine-type fuel pump assembly provided in an embodiment of this application.

[0019] Figure 5 is a schematic diagram of the filter structure of the turbine-type fuel pump assembly provided in an embodiment of this application;

[0020] The following are the labeling elements in the figure:

[0021] 1. Pump body; 11. Connecting plate; 12. Drive shaft; 13. Oil delivery port;

[0022] 2. Filter assembly; 201. Filter ring; 202. Seal; 203. Limiting ring; 204. Primary filter; 205. Secondary filter; 206. Guide plate; 207. Baffle; 208. Pressure sensor; 209. Sealing ring; 210. First elastic element; 211. Rotating rod; 212. Horizontal groove; 213. Second elastic element; 214. Handle. Detailed Implementation

[0023] The following describes this practical application in further detail with reference to Figures 1-5.

[0024] This embodiment discloses a turbine-type fuel pump assembly: pump body 1, characterized in that: a filter assembly 2 for fuel filtration is provided on the pump body 1.

[0025] Please refer to Figures 3 to 5. The filter assembly 2 includes a filter ring 201. A primary filter 204 and a secondary filter 205 are disposed inside the filter ring 201. A sealing element 202 is sealed between the primary filter 204 and the secondary filter 205. Two baffles 207 are movably connected to both sides of the primary filter 204. The two baffles 207 are attached to the filter ring 201 on the sides away from the primary filter 204.

[0026] With this configuration, when the fuel pump is running, the fuel inside the oil pan is drawn into the fuel pump cavity through the filter ring 201 as the rotor rotates. The fuel enters the seal 202 through the primary filter 204 and then undergoes deep filtration through the secondary filter 205. However, after prolonged filtration, the primary filter 204 may become clogged. At this time, the pressure inside the seal 202 decreases, and the pressure difference pushes the baffle 207 to flip backward, causing the baffle 207 to fit against the side of the seal 202. The fuel is then filtered through the bypass secondary filter 205, preventing the components from overheating due to the inability of fuel to flow properly, thus avoiding the risk of engine failure.

[0027] The seal 202 has transverse grooves 212 on both sides near the primary filter 204. A rotating rod 211 is installed inside the transverse groove 212. The baffle 207 is fixedly connected to the rotating rod 211. A second elastic element 213 is sleeved on both ends of the rotating rod 211. One end of the second elastic element 213 is fixedly connected to the primary filter 204, and the other end of the second elastic element 213 is fixedly connected to the baffle 207. When the internal pressure of the seal 202 is too high, the surface of the baffle 207 is pushed by the pressure, causing the rotating rod 211 to flip. When the baffle 207 is not under force, the pre-tightening force of the second elastic element 213 enables the baffle 207 to block the fuel, ensuring that its bypass filter can be used normally when the secondary filter 205 is blocked.

[0028] A guide plate 206 is fixedly connected to the side of the primary filter 204 closest to the secondary filter 205. The guide plates 206 are arranged in an array around the primary filter 204. The end of the guide plate 206 away from the primary filter 204 is attached to the secondary filter 205. The internal guide plates 206 can guide the fuel to flow in a specific direction and path, so that the fuel is more evenly distributed in the filter, avoiding turbulence or excessively high or low local flow rates, thereby improving the filtration efficiency of the filter, allowing the fuel to pass through the filter more smoothly, reducing flow resistance, and ensuring the normal operation of the fuel supply system.

[0029] A handle 214 is provided on the side of the primary filter 204 away from the guide plate 206. The handle 214 is U-shaped, and its vertical arm passes through the primary filter 204 and the secondary filter 205. When cleaning the filter ring 201, it is not necessary to completely disassemble the filter ring 201. When backflushing the secondary filter 205, pull the handle 214 to remove the vertical arm of the handle 214 from restricting the secondary filter 205. Rotating the handle 214 causes the primary filter 204 and the guide plate 206 to rotate. The primary filter 204 and the guide plate 206 rotate around the center of the secondary filter 205. The guide plate 206 cleans the surface of the secondary filter 205, improving the cleaning efficiency.

[0030] A limiting ring 203 is provided on the outer wall of the vertical arm of the handle 214. The limiting ring 203 is located between the primary filter 204 and the secondary filter 205. The handle 214 is located between the limiting ring 203 and the primary filter 204 and is pre-pressed with a first elastic element 210. In order to prevent the handle 214 from being pulled out of the primary filter 204 when the handle 214 is pulled out with great force, the limiting ring 203 is used to limit the distance that the handle 214 is pulled out. At the same time, the pre-tightening force of the first elastic element 210 is used to ensure that the handle 214 will not be separated from the secondary filter 205 when no pressure is applied to the handle 214.

[0031] A pressure sensor 208 is installed inside the seal 202. If the primary filter 204 becomes clogged, the pressure inside the seal 202 will decrease. The pressure sensor 208 will display the condition inside the seal 202 on the dashboard, reminding relevant personnel to clean the secondary filter 205.

[0032] The outer wall of the pump body 1 is provided with an oil delivery hole 13. The filter ring 201 is threadedly fixed to the oil delivery hole 13. The threaded connection between the oil delivery hole 13 and the filter ring 201 facilitates the disassembly of the filter ring 201.

[0033] A sealing ring 209 is provided at the threaded connection between the filter ring 201 and the oil inlet 13. The sealing ring 209 is made of rubber. The sealing ring 209 prevents the possibility of leakage at the connection between the filter ring 201 and the oil inlet 13. At the same time, the sealing ring 209 is made of rubber, and the threaded connection compresses the sealing ring 209 to enhance the fastening force.

[0034] Please refer to Figures 1 and 2. A drive shaft 12 is provided inside the pump body 1, and a connecting plate 11 is fixedly connected to one end of the pump body 1.

[0035] With this configuration, the drive shaft 12 is connected to the drive device, which drives the turbine inside the pump body 1 to rotate, drawing fuel from the fuel tank into the fuel pump. The fuel pump is then installed inside the fuel tank via the connecting plate 11 to prevent it from falling off.

[0036] The implementation principle of a turbine-type fuel pump assembly according to an embodiment of this application is as follows: When the fuel pump is running, the fuel inside the oil pan is drawn into the fuel pump cavity through the filter ring 201 as the rotor rotates. The fuel enters the seal 202 through the primary filter 204 and undergoes further filtration through the secondary filter 205. If the primary filter 204 becomes clogged, the pressure inside the seal 202 decreases, and the surface of the baffle 207 is pushed by the pressure difference, causing the rotating rod 211 to rotate. The baffle 207 is flipped so that it fits against the side of the seal 202. The fuel is filtered through the bypass secondary filter 205. When cleaning the filter ring 201, the vertical arm of the handle 214 is released from the restriction of the secondary filter 205 by pulling the handle 214. The handle 214 is rotated to drive the primary filter 204 and the guide plate 206 to rotate. The primary filter 204 and the guide plate 206 rotate around the center of the secondary filter 205. The guide plate 206 cleans the surface of the secondary filter 205.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A turbine-type fuel pump assembly, comprising a pump body (1), characterized in that: The pump body (1) is provided with a filter assembly (2) for fuel filtration; the filter assembly (2) includes a filter ring (201), and a primary filter screen (204) and a secondary filter screen (205) are provided inside the filter ring (201). A sealing element (202) is sealed between the primary filter screen (204) and the secondary filter screen (205). Two baffles (207) are movably connected on both sides of the primary filter screen (204), and the two baffles (207) on the sides away from the primary filter screen (204) are attached to the filter ring (201).

2. The turbine-type fuel pump assembly according to claim 1, characterized in that: The sealing element (202) has horizontal grooves (212) on both sides near the primary filter screen (204). A rotating rod (211) is provided inside the horizontal groove (212). The baffle (207) is fixedly connected to the rotating rod (211). A second elastic element (213) is sleeved on both ends of the rotating rod (211). One end of the second elastic element (213) is fixedly connected to the primary filter screen (204), and the other end of the second elastic element (213) is fixedly connected to the baffle (207).

3. The turbine-type fuel pump assembly according to claim 1, characterized in that: A guide plate (206) is fixedly connected to the side of the primary filter (204) near the secondary filter (205), and the guide plates (206) are arranged in an array about the primary filter (204). The end of the guide plate (206) away from the primary filter (204) is attached to the secondary filter (205).

4. The turbine-type fuel pump assembly according to claim 3, characterized in that: The primary filter (204) has a handle (214) on the side away from the guide plate (206). The handle (214) is U-shaped, and the vertical arm of the handle (214) passes through the primary filter (204) and the secondary filter (205).

5. A turbine-type fuel pump assembly according to claim 4, characterized in that: The handle (214) is provided with a limiting ring (203) on the outer wall of the vertical arm. The limiting ring (203) is located between the primary filter (204) and the secondary filter (205). The handle (214) is pre-pressed with a first elastic element (210) between the limiting ring (203) and the primary filter (204).

6. The turbine-type fuel pump assembly according to claim 1, characterized in that: A pressure sensor (208) is installed inside the seal (202).

7. A turbine-type fuel pump assembly according to claim 5, characterized in that: The pump body (1) has an oil delivery hole (13) on its outer wall, and the filter ring (201) is threadedly fixed to the oil delivery hole (13).

8. A turbine-type fuel pump assembly according to claim 7, characterized in that: A sealing ring (209) is provided at the threaded connection between the filter ring (201) and the oil inlet (13), and the sealing ring (209) is made of rubber.

9. A turbine-type fuel pump assembly according to claim 1, characterized in that: The pump body (1) is equipped with a drive shaft (12), and a connecting plate (11) is fixedly connected to one end of the pump body (1).

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