Multistage brushless electric pump structure and diesel vehicle filter shell

Abstract

The invention discloses a multi-stage brushless electric pump structure and a diesel vehicle filter shell, and belongs to the technical field of diesel vehicle oil supply systems. The multi-stage brushless electric pump structure and the diesel vehicle filter shell comprise a multi-stage ball type electric pump; the multi-stage ball type electric pump comprises a ball pump first-stage frame, an oil supply inlet frame, a ball pump second-stage frame and a controller shell which are sequentially connected, a ball pump outer cylinder is fixedly arranged at one end of the controller shell, and the outer wall of the ball pump outer cylinder is sequentially attached to the inner walls of the ball pump first-stage frame, the oil supply inlet frame and the ball pump second-stage frame. According to the utility model, a brushless motor can be saved, the consumption cost of the filter is reduced, the internal space of the filter is saved, the exhaust and oil supply functions of the filter are finally realized, and the oil-saving and energy-saving effects of the filter are synchronously realized.

Description

Technical Field

[0001] The invention relates to the technical field of diesel vehicle oil supply systems, and more specifically to a multi-stage brushless electric pump structure and a diesel vehicle filter housing. Background Art

[0002] The fuel filter is an important fuel filtration device for diesel engines, and the pump is generally integrated on the upper end of the fuel filter. When the diesel engine is started for the first time or after replacing a new fuel filter, the pump on the fuel filter needs to be operated to pump the fuel in the fuel tank into the engine fuel inlet to ensure that the engine starts successfully.

[0003] Based on the above, the inventors found that:

[0004] Existing filters usually have a dual-pump structure, that is, two electric pumps are installed in the filter, which increases the consumption cost of the filter. At the same time, due to the increase in the number of electric pumps, the energy consumption of the filter increases during operation, and more space needs to be reserved in the filter for placing the electric pumps.

[0005] Therefore, in view of this, the existing structure is studied and improved, and a multi-stage brushless electric pump structure and a diesel vehicle filter housing are provided, in order to achieve a more practical purpose. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to provide a multi-stage brushless electric pump structure and a diesel vehicle filter housing, which can save a brushless motor, reduce the consumption cost of the filter, save the internal space of the filter, and ultimately realize the functions of filter exhaust and oil supply, and simultaneously achieve the effect of filter fuel saving and energy saving.

[0008] 2. Technical solution

[0009] To solve the above problems, the present invention adopts the following technical solutions.

[0010] A multi-stage brushless electric pump structure, comprising a multi-stage ball-type electric pump, the multi-stage ball-type electric pump comprising a ball pump primary frame, an oil supply inlet frame, a ball pump secondary frame and a controller housing connected in sequence, one end of the controller housing is fixedly provided with a ball pump outer cylinder, and the outer wall of the ball pump outer cylinder is in close contact with the inner walls of the ball pump primary frame, the oil supply inlet frame and the ball pump secondary frame in sequence, an exhaust and oil supply partition sealing ring is provided at the outer fixed sleeve of the connection between the ball pump primary frame and the oil supply inlet frame, an oil supply sealing ring is provided at the outer fixed sleeve of the connection between the oil supply inlet frame and the ball pump secondary frame, and a pump cavity sealing ring is provided at the outer fixed sleeve of the connection between the ball pump secondary frame and the controller housing;

[0011] A sealing ring gasket frame is fixedly provided at one end of the first-stage frame of the ball pump and at the end of the outer cylinder of the ball pump, and an exhaust sealing ring is fixedly sleeved at the connection between the sealing ring gasket frame and the first-stage frame of the ball pump;

[0012] A driving controller is fixedly arranged inside the controller housing, and a ball pump upper cover is fixedly arranged on one end side of the controller housing, and a power supply inlet is fixedly arranged on the ball pump upper cover;

[0013] A ball pump lower cover is fixedly sleeved on one end of the ball pump outer cylinder, and a plurality of gas inlets are opened on the side of the ball pump lower cover, a plurality of gas outlets are opened on the side wall of the ball pump outer cylinder and on the inner side of the first-level frame of the ball pump, a plurality of fuel inlets are opened on the side of the ball pump outer cylinder and on the inner side of the oil supply inlet frame, and a plurality of fuel outlets are opened on the side of the ball pump outer cylinder and on the inner side of the second-level frame of the ball pump.

[0014] Furthermore, a central axis is fixedly arranged inside the outer cylinder of the ball pump, and a distal bearing is fixedly sleeved on one end of the central axis away from the drive controller, and a proximal bearing is fixedly sleeved on one end of the central axis close to the drive controller, and the output end of the drive controller is transmission-connected to the central axis via a coupling.

[0015] Furthermore, a three-stage transmission assembly is arranged inside the outer cylinder of the ball pump and on the inner side of the first-stage frame of the ball pump, a two-stage transmission assembly is arranged inside the outer cylinder of the ball pump and on the inner side of the oil supply inlet frame, and a first-stage transmission assembly is arranged inside the outer cylinder of the ball pump and on the inner side of the second-stage frame of the ball pump. The three-stage transmission assembly, the second-stage transmission assembly and the first-stage transmission assembly are all distributed outside the central axis.

[0016] Furthermore, the three-stage transmission assembly includes a high-speed shaft seal, which is sleeved on the outer side of the central shaft, and the outer side of the central shaft is threadedly connected with a first coupling near the end of the central shaft, the outer sleeve of the first coupling is provided with an eccentric sleeve of a ball pump, the interior of the eccentric sleeve of the ball pump is embedded with a front end of a rear cover of the ball pump, an upper roller pump rotor is movably connected to an upper part of the front end of the rear cover of the ball pump, a lower roller shaft is movably connected to a lower part of a side of the front end of the rear cover of the ball pump, an end pressure relief valve is tightly connected to an upper part of the side of the eccentric sleeve of the ball pump, and a front end of a pump housing of the ball pump is tightly connected to a lower part of the side of the eccentric sleeve of the ball pump.

[0017] Furthermore, the secondary transmission assembly includes a second coupling, which is threadedly connected to the middle part of the side surface of the central axis, and the rear end of the ball pump back cover is fixedly arranged inside the outer cylinder of the ball pump and close to the second coupling, the outer sleeve of the rear end of the ball pump back cover is provided with a lower eccentric sleeve of the ball pump, the upper part of the side surface of the rear end of the ball pump back cover is movably connected to the upper roller shaft, the lower part of the side surface of the rear end of the ball pump back cover is movably connected to the lower ball pump rotor, the upper part of the side surface of the rear end of the ball pump back cover is tightly connected to the middle pressure relief valve, and the lower part of the side surface of the rear end of the ball pump back cover is tightly connected to the rear end of the ball pump pump housing.

[0018] Furthermore, the first-stage transmission assembly includes a rear end stator and a rear end rotor, the rear end rotor is sleeved on the side of the central axis, the rear end stator is sleeved on the outer side of the rear end rotor, and the rear end stator and the rear end rotor are combined to form a motor drive component.

[0019] A diesel vehicle filter housing comprises a filter housing and a multi-stage ball-type electric pump, wherein a housing fixing bracket is fixedly arranged on the outer side of the filter housing, the multi-stage ball-type electric pump is fixed to the inner bottom of the filter housing, a gas pipeline is fixedly arranged inside the filter housing and above the multi-stage ball-type electric pump, and the gas pipeline extends to the outside of the filter housing.

[0020] Furthermore, an exhaust one-way valve is fixedly connected to the top of the gas pipeline, a gas external inlet is fixedly connected to the top of the exhaust one-way valve, and an exhaust outlet is provided at the bottom of the side of the filter outer shell.

[0021] Furthermore, an oil supply external inlet is provided on the side of the filter outer shell, the oil supply external inlet is connected to the interior of the filter outer shell and is connected to an oil supply channel, an oil supply one-way valve is fixedly provided on the side of the oil supply channel, and an oil outlet is provided on the side of the filter outer shell and below the oil supply external inlet.

[0022] 3. Beneficial effects

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] ① In this scheme, when designing the filter structure, the drive structure in the filter is optimized. In the optimized drive structure, the pump for oil supply and the pump for exhaust are integrated into one. At the drive controller, a brushless motor is used to control the rotation of the central shaft, and then the transmission effect of the first coupling and the second coupling is utilized to drive the rotation of multiple components in the multi-stage ball rotor pump at the same time, thereby realizing the effects of gas circulation filtration and fuel circulation cooling in the filter. Based on this, compared with the traditional filter structure, this optimized filter structure saves a brushless motor, reduces the filter consumption cost, saves the internal space of the filter, and finally realizes the filter exhaust and oil supply functions, and simultaneously realizes the filter fuel saving and energy saving effect;

[0025] ② In this solution, when the filter housing is in use, a multi-stage ball-type electric pump is placed at the inner bottom of the filter housing, and a housing fixing bracket is used to improve the stability of the filter housing. When the filter is working, a gas filtering cycle can be achieved between the gas external inlet and the exhaust outlet, and a fuel circulation and cooling can be achieved between the fuel external inlet and the oil outlet. Both the gas circulation and the fuel circulation are unidirectional, thereby achieving the filtering effect and cooling effect of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of a multi-stage ball-type electric pump of the present invention;

[0027] Figure 2 It is a schematic external side view of the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of the multi-stage ball-type electric pump of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a three-stage transmission assembly of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the secondary transmission assembly of the present invention;

[0031] Figure 6 It is a structural schematic diagram of a primary transmission assembly of the present invention;

[0032] Figure 7 It is a schematic diagram of the internal structure of the filter outer shell of the present invention;

[0033] Figure 8 It is a schematic diagram of the external front view of the filter housing of the present invention.

[0034] Description of the numbers in the figure:

[0035] Description of the numbers in the figure:

[0036] 1. Multi-stage ball-type electric pump;

[0037] 2. Ball pump primary frame; 201. Sealing ring gasket frame; 202. Exhaust sealing ring;

[0038] 3. Oil supply inlet frame;

[0039] 4. Secondary frame of ball pump;

[0040] 5. Controller housing; 501. Drive controller; 502. Ball pump cover; 503. Power inlet;

[0041] 504, three-stage transmission assembly; 5041, high-speed shaft seal; 5042, first coupling; 5043, upper eccentric sleeve of ball pump; 5044, front end of rear cover of ball pump; 5045, upper roller pump rotor; 5046, lower roller shaft; 5047, end pressure relief valve; 5048, front end of pump housing of ball pump;

[0042] 505, secondary transmission assembly; 5051, second coupling; 5052, rear end of the rear cover of the ball pump; 5053, lower eccentric sleeve of the ball pump; 5054, upper roller shaft; 5055, lower ball pump rotor; 5056, middle pressure relief valve; 5057, rear end of the pump housing of the ball pump;

[0043] 506, primary transmission assembly; 5061, rear end stator; 5062, rear end rotor; 5063, motor drive component;

[0044] 6. Ball pump outer cylinder; 601. Ball pump lower cover; 602. Gas inlet; 603. Gas outlet; 604. Fuel inlet; 605. Fuel outlet;

[0045] 606, central axis; 6061, distal end bearing member; 6062, proximal end bearing member;

[0046] 7. Exhaust and oil supply isolation seal ring;

[0047] 8. Oil supply sealing ring;

[0048] 9. Pump cavity sealing ring;

[0049] 10. Filter outer shell; 1001. Shell fixing bracket; 1002. Gas pipeline; 1003. Exhaust check valve; 1004. Gas external inlet; 1005. Exhaust outlet; 1006. Oil supply external inlet; 1007. Oil supply channel; 1008. Oil supply check valve; 1009. Oil outlet. DETAILED DESCRIPTION

[0050] 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, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0051] Embodiment 1:

[0052] See also Figure 1-6 A multi-stage brushless electric pump structure comprises a multi-stage ball-type electric pump 1, wherein the multi-stage ball-type electric pump 1 comprises a ball pump primary frame 2, an oil supply inlet frame 3, a ball pump secondary frame 4 and a controller housing 5 which are connected in sequence, a ball pump outer cylinder 6 is fixedly arranged at one end of the controller housing 5, and the outer wall of the ball pump outer cylinder 6 is in close contact with the inner wall of the ball pump primary frame 2, the oil supply inlet frame 3 and the ball pump secondary frame 4 in sequence, an exhaust and oil supply partition sealing ring 7 is arranged at the outer fixed sleeve of the connection between the ball pump primary frame 2 and the oil supply inlet frame 3, an oil supply sealing ring 8 is arranged at the outer fixed sleeve of the connection between the oil supply inlet frame 3 and the ball pump secondary frame 4, and a pump cavity sealing ring 9 is arranged at the outer fixed sleeve of the connection between the ball pump secondary frame 4 and the controller housing 5;

[0053] The multi-stage ball-type electric pump 1 is the power equipment of the entire diesel vehicle filter, wherein the ball pump primary frame 2, the oil supply inlet frame 3 and the ball pump secondary frame 4 protect the side of the ball pump outer cylinder 6, the controller housing 5 protects the driving device, and the exhaust and oil supply isolation seal ring 7, the oil supply seal ring 8 and the pump cavity seal ring 9 respectively seal and protect their respective connection positions;

[0054] A sealing ring frame 201 is fixedly provided at one end of the primary frame 2 of the ball pump and at the end of the outer cylinder 6 of the ball pump, and an exhaust sealing ring 202 is fixedly provided at the connection between the sealing ring frame 201 and the primary frame 2 of the ball pump;

[0055] The end of the ball pump outer tube 6 is sealed and protected by a sealing ring frame 201, and the gap between the sealing ring frame 201 and the primary frame 2 of the ball pump is sealed and protected by an exhaust sealing ring 202;

[0056] A driving controller 501 is fixedly disposed inside the controller housing 5, and a ball pump upper cover 502 is fixedly disposed on one end side of the controller housing 5, and a power supply inlet 503 is fixedly disposed on the ball pump upper cover 502;

[0057] The drive controller 501 can be externally mounted, which is convenient for removal, installation and maintenance. The ball pump cover 502 can seal the end of the controller housing 5, and the power inlet 503 can be used to connect to an external power source to realize the driving control of the drive controller 501 by power.

[0058] A ball pump lower cover 601 is fixedly sleeved on one end of the ball pump outer cylinder 6, and a plurality of gas inlets 602 are opened on the side of the ball pump lower cover 601, a plurality of gas outlets 603 are opened on the side wall of the ball pump outer cylinder 6 and on the inner side of the first-stage frame 2 of the ball pump, a plurality of fuel inlets 604 are opened on the side of the ball pump outer cylinder 6 and on the inner side of the oil supply inlet frame 3, and a plurality of fuel outlets 605 are opened on the side of the ball pump outer cylinder 6 and on the inner side of the second-stage frame 4 of the ball pump.

[0059] The lower cover 601 of the ball pump closes the end outlet of the outer tube 6 of the ball pump. At this time, gas can be introduced from the gas inlet 602. After the gas circulates in the ball pump, it is discharged from the gas outlet 603. Fuel is introduced from the fuel inlet 604. After the fuel circulates in the ball pump, it is discharged from the fuel outlet 605.

[0060] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A central shaft 606 is fixedly arranged inside the outer cylinder 6 of the ball pump, and a distal bearing 6061 is fixedly sleeved on one end of the central shaft 606 away from the driving controller 501, and a proximal bearing 6062 is fixedly sleeved on one end of the central shaft 606 close to the driving controller 501. The output end of the driving controller 501 is transmission-connected to the central shaft 606 via a coupling.

[0061] The central shaft 606 is the transmission structure of the entire ball pump. When the driving controller 501 is working, the central shaft 606 is controlled to rotate. When the central shaft 606 rotates, the proximal end bearing component 6062 and the distal end bearing component 6061 respectively limit the two ends of the central shaft 606 to ensure the stability of the rotation of the central shaft 606.

[0062] See also Figure 3 , Figure 4 , Figure 5 and Figure 6 A tertiary transmission assembly 504 is arranged inside the outer cylinder 6 of the ball pump and located on the inner side of the primary frame 2 of the ball pump. A secondary transmission assembly 505 is arranged inside the outer cylinder 6 of the ball pump and located on the inner side of the oil supply inlet frame 3. A primary transmission assembly 506 is arranged inside the outer cylinder 6 of the ball pump and located on the inner side of the secondary frame 4 of the ball pump. The tertiary transmission assembly 504, the secondary transmission assembly 505 and the primary transmission assembly 506 are all distributed outside the central axis 606.

[0063] The third-stage transmission assembly 504, the second-stage transmission assembly 505 and the first-stage transmission assembly 506 all operate around the rotation of the central axis 606 and achieve corresponding transmission effects.

[0064] See also Figure 4 The three-stage transmission assembly 504 includes a high-speed shaft seal 5041, which is sleeved on the outer side of the central shaft 606, and the outer side of the central shaft 606 is threadedly connected with a first coupling 5042 near the end of the central shaft 606, the outer side of the first coupling 5042 is sleeved with an eccentric sleeve 5043 on the ball pump, and the interior of the eccentric sleeve 5043 on the ball pump is embedded with a front end 5044 of a rear cover of the ball pump, an upper roller pump rotor 5045 is movably connected to an upper part of one side of the front end 5044 of the rear cover of the ball pump, a lower roller shaft 5046 is movably connected to a lower part of one side of the front end 5044 of the rear cover of the ball pump, an end pressure relief valve 5047 is tightly connected to the upper part of the side of the eccentric sleeve 5043 on the ball pump, and a front end 5048 of a pump housing of the ball pump is tightly connected to the lower part of the side of the eccentric sleeve 5043 on the ball pump.

[0065] The high-speed shaft seal 5041 can be used to achieve sealing when the center shaft 606 rotates. When the center shaft 606 rotates, the first coupling 5042 is used to transmit the rotation effect, and then the upper roller pump rotor 5045 and the lower roller shaft 5046 are controlled to rotate respectively to complete the effect of transmitting kinetic energy. In this process, the end pressure relief valve 5047 can be used to adjust the pressure relief.

[0066] See also Figure 5 The secondary transmission assembly 505 includes a second coupling 5051, which is threadedly connected to the middle part of the side of the central axis 606, and a rear end 5052 of the ball pump back cover is fixedly arranged inside the ball pump outer cylinder 6 and close to the second coupling 5051, and the outer sleeve of the rear end 5052 of the ball pump back cover is provided with a lower eccentric sleeve 5053 of the ball pump, and the upper part of the side of the rear end 5052 of the ball pump back cover is movably connected with an upper roller shaft 5054, and the lower part of the side of the rear end 5052 of the ball pump back cover is movably connected with a lower ball pump rotor 5055, and the upper part of the side of the rear end 5052 of the ball pump back cover is tightly connected with a middle pressure relief valve 5056, and the lower part of the side of the rear end 5052 of the ball pump back cover is tightly connected with a rear end 5057 of the ball pump housing.

[0067] The second coupling 5051 transfers the kinetic energy on the central shaft 606 downward, and then drives the upper roller shaft 5054 and the lower ball pump rotor 5055 to rotate, completing the effect of transferring kinetic energy. In this process, the middle pressure relief valve 5056 can be used to adjust the pressure relief.

[0068] See also Figure 6 The first-stage transmission assembly 506 includes a rear end stator 5061 and a rear end rotor 5062. The rear end rotor 5062 is sleeved on the side of the central axis 606. The rear end stator 5061 is sleeved on the outer side of the rear end rotor 5062. The rear end stator 5061 and the rear end rotor 5062 are combined to form a motor drive component 5063.

[0069] In the primary transmission assembly 506 , the drive controller 501 synchronously controls the rear end stator 5061 and the rear end rotor 5062 of the motor drive 5063 to work, thereby ensuring the stable transmission of the kinetic energy of the drive controller 501 .

[0070] Embodiment 2:

[0071] Further description is given with reference to the above-mentioned Example 1.

[0072] See also Figure 7-8 The filter housing of a diesel vehicle includes a filter housing 10 and a multi-stage ball-type electric pump 1. A housing fixing bracket 1001 is fixedly arranged on the outer side of the filter housing 10. The multi-stage ball-type electric pump 1 is fixed to the inner bottom of the filter housing 10. A gas pipeline 1002 is fixedly arranged inside the filter housing 10 and above the multi-stage ball-type electric pump 1. The gas pipeline 1002 extends to the outside of the filter housing 10.

[0073] The filter outer shell 10 serves as a protective shell for the entire filter. When in use, it is operated and fixed by a shell fixing bracket 1001 . When the filter is in use, gas can be introduced through a gas pipeline 1002 .

[0074] See also Figure 7 and Figure 8 The top of the gas pipeline 1002 is fixedly connected to an exhaust check valve 1003 , the top of the exhaust check valve 1003 is fixedly connected to a gas external inlet 1004 , and an exhaust outlet 1005 is provided at the bottom of the side of the filter outer shell 10 .

[0075] Gas can be introduced from the position of the gas external inlet 1004, the gas enters the gas pipeline 1002, and then the gas is introduced at the lower cover 601 of the ball pump, and then the gas is discharged from the exhaust outlet 1005 under the rotation of the upper roller pump rotor 5045 in the three-stage transmission assembly 504 to achieve a filtering effect. At this time, the exhaust check valve 1003 can be used to achieve one-way conduction of the gas to prevent the gas from returning from the gas external inlet 1004.

[0076] See also Figure 7 and Figure 8 An oil supply external inlet 1006 is provided on the side of the filter outer shell 10, and the oil supply external inlet 1006 is connected to the interior of the filter outer shell 10 and is connected to an oil supply channel 1007. An oil supply check valve 1008 is fixedly provided on the side of the oil supply channel 1007, and an oil outlet 1009 is provided on the side of the filter outer shell 10 and below the oil supply external inlet 1006.

[0077] The internal fuel of the filter is introduced from the external fuel supply inlet 1006, and then the fuel enters the fuel supply channel 1007. At this time, the fuel supply check valve 1008 ensures the one-way flow of the fuel, and driven by the rotation of the rear end rotor 5062 in the first-stage transmission assembly 506, the fuel is driven to the motor for cooling. The cooled fuel is discharged from the oil outlet 1009 to complete the fuel circulation.

[0078] Embodiment 3:

[0079] Further description is given with reference to the above-mentioned Embodiment 1 and Embodiment 2.

[0080] When using:

[0081] During the operation of the entire device, the filter housing 10 serves as a protective housing for the entire filter, and the multi-stage ball-type electric pump 1 is the power equipment of the entire diesel vehicle filter. The entire filter includes two parts: a gas filter cycle and a fuel cycle cooling motor. When these two parts are working, the drive controller 501 works to control the rotation of the central shaft 606.

[0082] When the gas filtering cycle is performed, the gas is introduced from the gas external inlet 1004, and then the exhaust check valve 1003 controls the one-way flow of the gas. At this time, the gas enters the gas pipeline 1002 and reaches the gas inlet 602 of the multi-stage ball electric pump 1 through the gas pipeline 1002. At this time, the second coupling 5051 transmits the kinetic energy on the central axis 606 outward, and then drives the upper roller shaft 5054 and the lower ball pump rotor 5055 to rotate. Under the rotation of the upper roller pump rotor 5045 in the three-stage transmission assembly 504, the gas reaches the inside of the ball pump to achieve filtering. The filtered gas is discharged through the gas outlet 603 and the exhaust outlet 1005 in turn;

[0083] When the fuel circulation is performed to cool the motor, the fuel is introduced from the fuel supply external inlet 1006, and then the fuel supply check valve 1008 controls the one-way flow of the fuel. At this time, the fuel enters the fuel supply channel 1007, and passes through the fuel supply channel 1007 to reach the fuel inlet 604 of the multi-stage ball-type electric pump 1. At this time, the first coupling 5042 transfers the kinetic energy on the central shaft 606 outward, and then controls the upper roller pump rotor 5045 and the lower roller shaft 5046 to rotate respectively, completing the effect of transferring kinetic energy. Driven by the rotation of the rear end rotor 5062 in the first-stage transmission assembly 506, the fuel reaches the outside of the ball pump to achieve cooling of the ball pump. The cooled fuel is discharged through the fuel outlet 605 and the oil outlet 1009 in turn;

[0084] In this way, the two parts of the work of the gas filtration cycle and the fuel circulation cooling motor in the filter can be realized. This device can save a brushless motor, reduce the consumption cost of the filter, save the internal space of the filter, and finally realize the exhaust and oil supply functions of the filter, and simultaneously achieve the fuel and energy saving effect of the filter.

[0085] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-stage brushless electric pump structure, comprising a multi-stage ball-type electric pump (1), characterized in that: The multi-stage ball-type electric pump (1) comprises a ball pump primary frame (2), an oil supply inlet frame (3), a ball pump secondary frame (4) and a controller housing (5) connected in sequence; a ball pump outer cylinder (6) is fixedly provided at one end of the controller housing (5); and the outer wall of the ball pump outer cylinder (6) is in close contact with the inner walls of the ball pump primary frame (2), the oil supply inlet frame (3) and the ball pump secondary frame (4) in sequence; an exhaust and oil supply isolating sealing ring (7) is provided on the outer fixed sleeve at the connection between the ball pump primary frame (2) and the oil supply inlet frame (3); an oil supply sealing ring (8) is provided on the outer fixed sleeve at the connection between the oil supply inlet frame (3) and the ball pump secondary frame (4); and a pump cavity sealing ring (9) is provided on the outer fixed sleeve at the connection between the ball pump secondary frame (4) and the controller housing (5); A sealing ring gasket frame (201) is fixedly provided at one end of the primary frame (2) of the ball pump and located at the end of the outer cylinder (6) of the ball pump, and an exhaust sealing ring (202) is fixedly sleeved at the connection between the sealing ring gasket frame (201) and the primary frame (2) of the ball pump; A drive controller (501) is fixedly arranged inside the controller housing (5), and a ball pump upper cover (502) is fixedly arranged on the side surface of one end of the controller housing (5), and a power supply inlet (503) is fixedly arranged on the ball pump upper cover (502); A ball pump lower cover (601) is fixedly sleeved on one end of the ball pump outer cylinder (6), and a plurality of gas inlets (602) are provided on the side of the ball pump lower cover (601), a plurality of gas outlets (603) are provided on the side wall of the ball pump outer cylinder (6) and located on the inner side of the first-stage frame (2) of the ball pump, a plurality of fuel inlets (604) are provided on the side of the ball pump outer cylinder (6) and located on the inner side of the oil supply inlet frame (3), and a plurality of fuel outlets (605) are provided on the side of the ball pump outer cylinder (6) and located on the inner side of the second-stage frame (4) of the ball pump.

2. A multi-stage brushless electric pump structure according to claim 1, characterized in that: A central shaft (606) is fixedly arranged inside the outer cylinder (6) of the ball pump. A distal bearing component (6061) is fixedly sleeved on one end of the central shaft (606) away from the drive controller (501). A proximal bearing component (6062) is fixedly sleeved on one end of the central shaft (606) close to the drive controller (501). The output end of the drive controller (501) is transmission-connected to the central shaft (606) via a coupling.

3. A multi-stage brushless electric pump structure according to claim 1, characterized in that: A three-stage transmission assembly (504) is arranged inside the outer cylinder (6) of the ball pump and located on the inner side of the first-stage frame (2) of the ball pump; a two-stage transmission assembly (505) is arranged inside the outer cylinder (6) of the ball pump and located on the inner side of the oil supply inlet frame (3); a first-stage transmission assembly (506) is arranged inside the outer cylinder (6) of the ball pump and located on the inner side of the second-stage frame (4) of the ball pump; the three-stage transmission assembly (504), the two-stage transmission assembly (505) and the first-stage transmission assembly (506) are all distributed outside the central axis (606).

4. A multi-stage brushless electric pump structure according to claim 3, characterized in that: The three-stage transmission assembly (504) includes a high-speed shaft seal (5041), the high-speed shaft seal (5041) is sleeved on the outer side of the central shaft (606), and the outer side of the central shaft (606) and the position close to the end of the central shaft (606) are threadedly connected with a first coupling (5042), the outer side of the first coupling (5042) is sleeved with an eccentric sleeve (5043) on the ball pump, and the interior of the eccentric sleeve (5043) on the ball pump is embedded with a rear end of the ball pump. The front end (5044) of the rear cover of the ball pump is movably connected to an upper roller pump rotor (5045) on one side of the upper front end (5044) of the rear cover of the ball pump, and a lower roller shaft (5046) is movably connected to a lower side of the front end (5044) of the rear cover of the ball pump. The upper side of the eccentric sleeve (5043) of the ball pump is tightly connected to an end pressure relief valve (5047), and the lower side of the eccentric sleeve (5043) of the ball pump is tightly connected to a front end (5048) of the pump housing of the ball pump.

5. A multi-stage brushless electric pump structure according to claim 3, characterized in that: The secondary transmission assembly (505) comprises a second coupling (5051), which is threadedly connected to the middle part of the side of the central shaft (606), and a rear end (5052) of a ball pump rear cover is fixedly arranged inside the outer cylinder (6) of the ball pump and close to the second coupling (5051), the outer part of the rear end (5052) of the ball pump rear cover is sleeved with a lower eccentric sleeve (5053) of the ball pump, the upper part of the side of the rear end (5052) of the ball pump rear cover is movably connected to an upper roller shaft (5054), the lower part of the side of the rear end (5052) of the ball pump rear cover is movably connected to a lower ball pump rotor (5055), the upper part of the side of the rear end (5052) of the ball pump rear cover is tightly connected to a middle pressure relief valve (5056), and the lower part of the side of the rear end (5052) of the ball pump rear cover is tightly connected to a rear end (5057) of a pump housing of the ball pump.

6. A multi-stage brushless electric pump structure according to claim 3, characterized in that: The primary transmission assembly (506) includes a rear end stator (5061) and a rear end rotor (5062), wherein the rear end rotor (5062) is sleeved on the side of the central shaft (606), and the rear end stator (5061) is sleeved on the outer side of the rear end rotor (5062), and the rear end stator (5061) and the rear end rotor (5062) are combined to form a motor drive component (5063).

7. A diesel vehicle filter housing, comprising a filter housing (10) and a multi-stage ball-type electric pump (1), characterized in that: A housing fixing bracket (1001) is fixedly arranged on the outer side surface of the filter outer shell (10); the multi-stage ball-type electric pump (1) is fixed to the inner bottom of the filter outer shell (10); a gas pipeline (1002) is fixedly arranged inside the filter outer shell (10) and above the multi-stage ball-type electric pump (1); and the gas pipeline (1002) extends to the outside of the filter outer shell (10).

8. The diesel vehicle filter housing according to claim 7, characterized in that: The top of the gas pipeline (1002) is fixedly connected to an exhaust check valve (1003), the top of the exhaust check valve (1003) is fixedly connected to a gas external inlet (1004), and the bottom of the side of the filter outer shell (10) is provided with an exhaust outlet (1005).

9. The diesel vehicle filter housing according to claim 7, characterized in that: An oil supply external inlet (1006) is provided on the side of the filter outer shell (10), the oil supply external inlet (1006) is connected to the interior of the filter outer shell (10) and is connected to an oil supply channel (1007), an oil supply check valve (1008) is fixedly provided on the side of the oil supply channel (1007), and an oil outlet (1009) is provided on the side of the filter outer shell (10) and below the oil supply external inlet (1006).

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