Double acting oil pump

Abstract

The present invention discloses a double-acting oil delivery pump, comprising an electronic pump body and a mechanical pump body, wherein the mechanical pump body is located on the left side of the electronic pump body, an intermediate body is provided between the electronic pump body and the mechanical pump body, an electronic pump connection line is provided on the electronic pump body, an oil suction port A is provided at the lower end of the mechanical pump body, a pressure relief valve block is provided at the upper end of the mechanical pump body, an oil channel outlet B is provided at the upper end of the pressure relief valve block, a driving mechanism is provided on the mechanical pump body, and an oil channel I connected to the oil suction port A is provided in the intermediate body. The present invention supplies fuel to the fuel pump in time at low speed through the operation of the electronic pump body, and smoothly empties the oil pipe from the fuel tank to the oil delivery pump through the self-priming of the electronic pump body, so as to help the mechanical pump body complete self-priming and smoothly build pressure, thereby forming a double-acting oil delivery pump, which not only improves the pressure building and oil supply efficiency of the mechanical pump body, but also guarantees the fuel supply to the greatest extent, avoiding the difficulty of starting the engine due to the supply of low-pressure oil circuit.

Description

Technical Field

[0001] The present invention relates to the technical field of diesel engines, and in particular to a high-power diesel engine with special requirements for starting and a special application engine. Background Art

[0002] The fuel pump is a performance accessory of the fuel system. In particular, the current electronic fuel injection engines have higher requirements for low-pressure oil circuits, which must ensure both flow and minimum pressure requirements. The engine as a power source is mainly divided into gas and diesel, and is mainly used in construction machinery, data centers, main power generation, hotels, hospitals and other backup engine power sources.

[0003] When the oil pump in the existing supporting technology is actually used, the mechanical oil pump is prone to internal leakage due to problems such as pipeline sealing. In the secondary activation stage, it is difficult to build pressure due to the low speed. A double-acting oil pump is now proposed to solve the above problems. Summary of the invention

[0004] The present invention proposes a double-acting oil pump, which is used to solve the technical problems that the oil pump in the existing supporting technology in the background technology is prone to internal leakage due to problems such as pipeline sealing during actual use, and it is difficult to build pressure due to the low rotation speed during the secondary activation stage.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A double-acting oil delivery pump comprises an electronic pump body and a mechanical pump body, wherein the mechanical pump body is located on the left side of the electronic pump body, an intermediate body is provided between the electronic pump body and the mechanical pump body, an electronic pump connection line is provided on the electronic pump body, an oil suction port A is provided at the lower end of the mechanical pump body, a pressure relief valve block is provided at the upper end of the mechanical pump body, an oil channel outlet B is provided at the upper end of the pressure relief valve block, a driving mechanism is provided on the mechanical pump body, an oil channel I connected to the oil suction port A is provided in the intermediate body, an oil channel III is provided in communication with the oil channel I and the oil channel outlet B, an identical oil channel II is provided in the electronic pump body, the mechanical pump body and the intermediate body, a vane pump cavity of the identical electronic pump body is provided between the oil channel I and the oil channel II, an oil outlet end of the oil channel II is connected to the oil outlet end of the mechanical pump body, the oil outlet end of the mechanical pump body is connected to the oil channel outlet B, and a vane mechanism is provided in the vane pump cavity.

[0007] Preferably, the driving mechanism includes a rotating shaft which rotates horizontally and passes through the mechanical pump body. A rotating shaft housing is provided at one end of the rotating shaft outside the mechanical pump body. A driving gear is coaxially arranged at one end of the rotating shaft away from the mechanical pump body. A locking nut is threadedly sleeved on the rotating shaft, and the locking nut is in contact with the driving gear.

[0008] Preferably, an oil pump gear is coaxially fixedly connected to one end of the rotating shaft located between the oil suction port A and the oil channel outlet B.

[0009] Preferably, the oil passage I is connected to the vane pump chamber and is provided with a same oil inlet valve core, and one end of the oil passage III located in the pressure relief valve block is provided with a pressure relief valve core.

[0010] Preferably, the vane mechanism includes an electronic pump motor fixedly mounted on the right end of the electronic pump body, the driving shaft of the electronic pump motor rotates horizontally and penetrates the vane pump chamber, an annular block and a vane nut are coaxially arranged on one end of the electronic pump motor driving shaft located in the vane pump chamber, the vane nut is in contact with the annular block, a plurality of grooves are provided on the annular side wall of the annular block, and vane springs are fixedly connected to the inner walls of the plurality of grooves, and the same vane is fixedly connected to the ends of the two vane springs on the same side away from the inner wall of the groove.

[0011] Preferably, the sliding vane is made of ductile iron.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Through the operation of the electronic pump body, fuel is supplied to the fuel pump in time at low speed. The oil pipe from the fuel tank to the fuel pump is emptied smoothly through the self-priming of the electronic pump body, which helps the mechanical pump body to complete self-priming and build pressure smoothly, forming a double-acting fuel pump. It not only improves the pressure building and fuel supply efficiency of the mechanical pump body, but also guarantees the fuel supply to the greatest extent, avoiding difficulties in engine starting due to low-pressure oil supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the top view of the double-acting oil pump proposed by the present invention;

[0015] Figure 2 It is a partial perspective schematic diagram of the double-acting oil delivery pump proposed by the present invention;

[0016] Figure 3 It is a schematic cross-sectional view of the mechanical pump body of the double-acting oil pump proposed by the present invention;

[0017] Figure 4 for Figure 2 A partial enlarged view of point C in the middle.

[0018] In the figure: 1 electronic pump body, 2 mechanical pump body, 3 intermediate body, 4 electronic pump connection, 5 pressure relief valve block, 101 oil channel I, 102 oil channel II, 103 oil channel III, 6 vane pump chamber, 7 rotating shaft, 8 rotating shaft housing, 9 driving gear, 10 locking nut, 11 oil pump gear, 12 oil inlet valve core, 13 pressure relief valve core, 14 electronic pump motor, 15 annular block, 16 vane nut, 17 groove, 18 vane spring, 19 vane. DETAILED DESCRIPTION

[0019] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-4 As shown, the double-acting oil delivery pump comprises an electronic pump body 1 and a mechanical pump body 2, the mechanical pump body 2 is located on the left side of the electronic pump body 1, an intermediate body 3 is provided between the electronic pump body 1 and the mechanical pump body 2, the electronic pump body 1 is provided with an electronic pump connection line 4, the lower end of the mechanical pump body 2 is provided with an oil suction port A, the upper end of the mechanical pump body 2 is provided with a pressure relief valve block 5, the upper end of the pressure relief valve block 5 is provided with an oil channel outlet B, the mechanical pump body 2 is provided with a driving mechanism, the driving mechanism comprises a rotating shaft 7 that is horizontally rotated and penetrates the mechanical pump body 2, and the rotating shaft 7 is provided. A rotating shaft housing 8 is provided at one end of the shaft 7 located outside the mechanical pump body 2, a driving gear 9 is coaxially provided at the end of the rotating shaft 7 away from the mechanical pump body 2, a locking nut 10 is threadedly sleeved on the rotating shaft 7, and the locking nut 10 is in contact with the driving gear 9, an oil pump gear 11 is coaxially fixedly connected to one end of the rotating shaft 7 located between the oil suction port A and the oil channel outlet B, the oil channel I101 and the vane pump chamber 6 are connected to each other and the same oil inlet valve core 12 is provided, and a pressure relief valve core 13 is provided at one end of the oil channel III103 located in the pressure relief valve block 5.

[0022] The intermediate body 3 is provided with an oil passage Ⅰ101 connected with the oil suction port A, and the oil passage Ⅰ101 is connected with the oil passage outlet B to form an oil passage Ⅲ103. The electronic pump body 1, the mechanical pump body 2 and the intermediate body 3 are provided with the same oil passage Ⅱ102. The oil passage Ⅰ101 and the oil passage Ⅱ102 are connected with the same vane pump chamber 6 of the electronic pump body 1. The oil outlet end of the oil passage Ⅱ102 is connected with the oil outlet end of the mechanical pump body 2, and the oil outlet end of the mechanical pump body 2 is connected with the oil passage outlet B. The vane pump chamber 6 is provided with a vane mechanism, and the vane mechanism includes a vane mechanism fixedly installed on the electronic pump body The electronic pump motor 14 is at the right end of the body 1, and the driving shaft of the electronic pump motor 14 rotates horizontally and penetrates the vane pump chamber 6. An annular block 15 and a vane nut 16 are coaxially arranged on one end of the driving shaft of the electronic pump motor 14 located in the vane pump chamber 6. The vane nut 16 is in contact with the annular block 15. A plurality of grooves 17 are arranged on the annular side wall of the annular block 15. Vane springs 18 are fixedly connected to the inner walls of the plurality of grooves 17. The ends of the two vane springs 18 on the same side away from the inner wall of the groove 17 are fixedly connected to the same vane 19, and the vane 19 is made of ductile iron.

[0023] In the starting process of the present invention, during the engine starting process, the controller gives a starter signal, and also gives an operation signal to the electronic pump body 1 through the electronic pump connection 4. At this time, the mechanical pump body 2 is transmitted to the oil pumping gear 11 through the rotating shaft 7, and the oil pumping gear 11 is rotated to complete the oil pumping. When the electronic pump connection 4 receives the signal, the electronic pump motor 14 is operated to drive the slide 19 to rotate normally, so as to suck oil from the oil suction port A and transport it to the slide pump cavity 6 of the electronic pump body 1 through the oil channel I101, and then pass through the oil channel II102 and the oil channel outlet B to supply oil to the engine fuel pump; further, when the engine starts successfully and the speed rises, the starter motor stops running, and the electronic pump body 1 also stops running. The fuel supply is completely supplied by the mechanical pump body 2, and the electronic pump body 1 stops running at this time.

[0024] The above description is only a preferred specific implementation manner of the present invention, but 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 scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-acting oil delivery pump, comprising an electronic pump body (1) and a mechanical pump body (2), wherein the mechanical pump body (2) is located on the left side of the electronic pump body (1), an intermediate body (3) is provided between the electronic pump body (1) and the mechanical pump body (2), and an electronic pump connection line (4) is provided on the electronic pump body (1), characterized in that: The lower end of the mechanical pump body (2) is provided with an oil suction port A, the upper end of the mechanical pump body (2) is provided with a pressure relief valve block (5), the upper end of the pressure relief valve block (5) is provided with an oil channel outlet B, the mechanical pump body (2) is provided with a driving mechanism, the intermediate body (3) is provided with an oil channel I (101) connected to the oil suction port A, the oil channel I (101) is connected to the oil channel outlet B and an oil channel III (103) is provided, the electronic pump body (1), the mechanical pump body (2) and the intermediate body (3) are provided with the same oil channel II (102), the oil channel I (101) and the oil channel II (102) are connected to a vane pump chamber (6) of the same electronic pump body (1), the oil outlet end of the oil channel II (102) is connected to the oil outlet end of the mechanical pump body (2), the oil outlet end of the mechanical pump body (2) is connected to the oil channel outlet B, and a vane mechanism is provided in the vane pump chamber (6).

2. The double-acting oil pump according to claim 1, characterized in that: The driving mechanism comprises a rotating shaft (7) which is arranged to rotate horizontally and penetrate the mechanical pump body (2); a rotating shaft housing (8) is arranged at one end of the rotating shaft (7) which is located outside the mechanical pump body (2); a driving gear (9) is coaxially arranged at one end of the rotating shaft (7) which is away from the mechanical pump body (2); a locking nut (10) is threadedly sleeved on the rotating shaft (7); and the locking nut (10) is in contact with the driving gear (9).

3. The double-acting oil pump according to claim 2, characterized in that: The rotating shaft (7) is located between the oil suction port A and the oil channel outlet B, and one end thereof is coaxially and fixedly connected with an oil pump gear (11).

4. The double-acting oil pump according to claim 1, characterized in that: The oil passage I (101) is connected to the vane pump chamber (6) and is provided with a same oil inlet valve core (12), and one end of the oil passage III (103) located in the pressure relief valve block (5) is provided with a pressure relief valve core (13).

5. The double-acting oil pump according to claim 1, characterized in that: The vane mechanism comprises an electronic pump motor (14) fixedly mounted on the right end of an electronic pump body (1); a drive shaft of the electronic pump motor (14) rotates horizontally and penetrates a vane pump chamber (6); an annular block (15) and a vane nut (16) are coaxially arranged on one end of the drive shaft of the electronic pump motor (14) located in the vane pump chamber (6); the vane nut (16) is in contact with the annular block (15); a plurality of grooves (17) are arranged on the annular side wall of the annular block (15); a plurality of vane springs (18) are fixedly connected to the inner walls of the grooves (17); and a same vane (19) is fixedly connected to one end of two vane springs (18) on the same side away from the inner wall of the groove (17).

6. The double-acting oil pump according to claim 5, characterized in that: The sliding vane (19) is made of ductile iron.

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