Integrated fuel metering and injection valve

Abstract

The utility model relates to an integrated fuel metering and injection valve which comprises a gas guide pipeline, a fuel pipeline is arranged in the gas guide pipeline, an oil liquid flow dividing structure is arranged at the bottom end in the fuel pipeline, and the bottom end of the fuel pipeline is arranged in a conical shape. The utility model relates to the technical field of metering injection valves. According to the integrated fuel metering and injection valve, fuel oil is guided into the fuel pipeline through the fuel inlet pipe, when the fuel oil flows to the bottom end, the fuel oil is separated into multiple strands of fuel oil through the flow dividing grooves, meanwhile, air is guided into the air guide pipeline through the air inlet pipe, and at the moment, the air moves downwards through the air guide pipeline; the air guide pipeline moves into the atomization structure, the flow speed of the air is increased through the atomization structure, the air makes contact with the fuel oil in the flow dividing groove, then the fuel oil is scattered through rapid movement of the air, the fuel oil is atomized, and the purpose of improving the atomization effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of metering injection valves, in particular to an integrated fuel metering and injection valve. Background Art

[0002] Jet metering valves are commonly used for oil supply to the combustion chamber of an internal combustion engine. A mixed fluid of heavy oil and compressed air flows into the inner cavity of the hollow valve stem and enters the gas-liquid mixing chamber from the air outlet at the neck of the valve stem to achieve the purpose of atomizing the oil and enable it to burn fully.

[0003] In the prior art, since the oil is mostly discharged through a separate pipe, when the oil is discharged, it usually forms an oil column or oil droplets with a diameter roughly the same as the oil pipe. However, such oil columns and oil droplets are large in volume, making it difficult to achieve effective atomization when the air contacts the oil.

[0004] This will result in poor oil atomization, which in turn may lead to incomplete combustion of the oil due to insufficient contact between the oil and air. This will not only waste a large amount of oil, but also cause the oil to carbonize and clog the valve body when the combustion is incomplete. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an integrated fuel metering and injection valve to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] An integrated fuel metering and injection valve includes an air guide pipe, a fuel pipe is provided inside the air guide pipe, an oil diversion structure is provided at the bottom end of the fuel pipe, the bottom end of the fuel pipe is tapered, and an atomizing structure is provided at the bottom end of the air guide pipe and is sleeved on the bottom end of the fuel pipe;

[0008] The oil diversion structure includes a rotating cylinder, the rotating cylinder is arranged at the inner bottom end of the fuel pipe, and the outer peripheral wall of the rotating cylinder is provided with a plurality of evenly distributed diversion grooves;

[0009] A fuel inlet pipe penetrating the air guide pipe is provided at the top of the fuel pipe, and an air inlet pipe is provided on the side wall of the air guide pipe.

[0010] Furthermore, the atomization structure includes a conical cylinder, which is sleeved on the outer wall of the conical part of the bottom end of the fuel pipeline, the inner wall of the conical cylinder is in contact with the outer wall of the bottom conical end of the fuel pipeline, and the conical cylinder is fixedly connected to the air guide pipe. The inner cylinder wall of the conical cylinder is provided with a plurality of spiral grooves, and the top end of the spiral groove is connected to the air guide pipe.

[0011] Furthermore, a rotating ring is sleeved on the top end of the rotating cylinder, the rotating ring is fixedly connected to the rotating cylinder, and a mounting groove rotatably matched with the rotating ring is opened inside the fuel pipeline.

[0012] Furthermore, the width of the diversion groove gradually becomes wider and the depth gradually becomes shallower from top to bottom.

[0013] Furthermore, a fuel metering sensor is provided inside the fuel inlet pipe.

[0014] Furthermore, the outer wall of the air guide duct is provided with an external thread, and the outer wall of the air guide duct is threadedly connected to a connecting lug.

[0015] In summary, the present invention has at least one of the following beneficial technical effects:

[0016] 1. This integrated fuel metering and injection valve introduces fuel into the fuel pipeline through a fuel inlet pipe. When the fuel flows to the bottom, it is separated into multiple streams through a diverter groove. Simultaneously, air is introduced into the air duct through an air inlet pipe. The air then moves downward through the air duct, causing the air duct to move into the atomizing structure. The atomizing structure increases the air flow rate and allows the air to contact the fuel in the diverter groove. The rapid movement of the air then disperses the fuel, causing the fuel to form atomized particles, thereby achieving an improved atomization effect.

[0017] 2. This integrated fuel metering and injection valve divides the incoming air into several air streams through the spiral groove when the air moves to the position of the tapered cylinder through the air guide pipe. Since the diameter of the spiral groove is much smaller than the diameter of the air guide pipe and the air pressure of the air entering remains unchanged, the air will be quickly discharged through the spiral groove and come into contact with the oil inside the diversion groove during the discharge process, and then the oil will be atomized by the high-pressure air. The high-pressure flowing air can also effectively push the oil out, so as to improve the atomization efficiency of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The figure is a structural schematic diagram of an integrated fuel metering and injection valve of the present utility model.

[0020] Figure 2 The utility model is a schematic diagram of the internal structure of the air guide pipe of the integrated fuel metering and injection valve.

[0021] Figure 3 The figure is a schematic diagram of the internal structure of a fuel pipeline of an integrated fuel metering and injection valve of the present invention.

[0022] Figure 4 The utility model is a structural schematic diagram of an integrated fuel metering and injection valve oil diversion structure.

[0023] Figure 5 This is a structural schematic diagram of an integrated fuel metering and injection valve atomization structure of the present utility model.

[0024] In the figure, 1. air duct; 2. fuel pipeline; 3. oil diversion structure; 301. rotating cylinder; 302. diversion groove; 303. rotating ring; 304. mounting groove; 4. atomization structure; 401. conical cylinder; 402. spiral groove; 5. fuel inlet pipe; 6. air inlet pipe; 7. fuel metering sensor; 8. external thread; 9. connecting ear. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings.

[0026] Example:

[0027] Reference Figure 1 - Figure 5 The utility model discloses an integrated fuel metering and injection valve, comprising an air guide pipe 1, a fuel pipe 2 being provided inside the air guide pipe 1, an oil diversion structure 3 being provided at the bottom end of the fuel pipe 2, the bottom end of the fuel pipe 2 being tapered, and an atomizing structure 4 being provided at the bottom end of the air guide pipe 1 and being sleeved on the bottom end of the fuel pipe 2;

[0028] The oil diversion structure 3 includes a rotating cylinder 301, which is arranged at the bottom end of the fuel pipe 2. The outer wall of the rotating cylinder 301 is provided with a plurality of evenly distributed diversion grooves 302.

[0029] A fuel inlet pipe 5 penetrating the air guide pipe 1 is provided at the top end of the fuel pipe 2 , and an air inlet pipe 6 is provided on the side wall of the air guide pipe 1 .

[0030] In this embodiment, when in use, the fuel is introduced into the interior of the fuel pipe 2 through the fuel inlet pipe 5, and when the fuel flows to the bottom end, it is separated into multiple streams of fuel through the diverter groove 302. At the same time, air is introduced into the interior of the air duct 1 through the air inlet pipe 6. At this time, the air moves downward through the air duct 1, causing the air duct 1 to move into the interior of the atomization structure 4, and the atomization structure 4 increases the flow rate of the air, and makes the air contact with the fuel inside the diverter groove 302, and then the fuel is dispersed by the rapid movement of the air, so that the fuel is atomized, thereby achieving the purpose of improving the atomization effect.

[0031] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the atomization structure 4 includes a conical cylinder 401, which is sleeved on the outer peripheral wall of the conical part of the bottom end of the fuel pipe 2, the inner wall of the conical cylinder 401 is in contact with the outer wall of the bottom conical end of the fuel pipe 2, and the conical cylinder 401 is fixedly connected to the air guide pipe 1, and a plurality of spiral grooves 402 are opened on the inner cylinder wall of the conical cylinder 401, and the top end of the spiral groove 402 is connected to the air guide pipe 1.

[0032] In this embodiment, the conical cylinder 401 is fixedly connected to the air guide pipe 1. When the air moves to the position of the conical cylinder 401 through the air guide pipe 1, the incoming air is divided into several air flows through the spiral groove 402. Since the diameter of the spiral groove 402 is much smaller than the diameter of the air guide pipe 1 and the air pressure of the air entering is unchanged, the air will be quickly discharged through the spiral groove 402, and in the process of discharge, it will come into contact with the oil inside the diversion groove 302, and then the oil will be atomized by the high-pressure air. The high-pressure flowing air can also effectively push the oil out to increase the flow rate of the oil.

[0033] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a rotating ring 303 is sleeved on the top of the rotating cylinder 301 , the rotating ring 303 is fixedly connected to the rotating cylinder 301 , and a mounting groove 304 is opened inside the fuel pipe 2 to rotate with the rotating ring 303 .

[0034] In this embodiment, the rotating ring 303 cooperates with the installation groove 304 to rotate the rotating cylinder 301 inside the fuel pipe 2, and impacts the groove wall of the diversion groove 302 during the air discharge process, thereby pushing the rotating cylinder 301 to rotate, so that the oil can be quickly thrown out and quickly atomized with the air.

[0035] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the width of the diverter groove 302 gradually widens and the depth gradually shallows from top to bottom.

[0036] In this embodiment, since the width of the diverter groove 302 gradually widens from top to bottom and the depth gradually shallows from top to bottom, when the oil flows from the upper end to the lower end of the diverter groove 302, a thinner oil film will be formed, so that it can be atomized under the impact of air, thereby achieving the purpose of improving the atomization effect of the oil.

[0037] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a fuel metering sensor 7 is provided inside the fuel inlet pipe 5 .

[0038] In this embodiment, the fuel metering sensor 7 is used to detect the fuel flow rate inside the fuel inlet pipe 5 .

[0039] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the outer wall of the air guide duct 1 is provided with an external thread 8, and the outer wall of the air guide duct 1 is threadedly connected with a connecting lug 9.

[0040] In this embodiment, the external thread 8 is used to install the connecting lug 9, and the setting of the connecting lug 9 is used to install the air guide pipe 1.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. An integrated fuel metering and injection valve, characterized in that: The invention comprises an air guide pipe (1), a fuel pipe (2) is provided inside the air guide pipe (1), an oil diversion structure (3) is provided at the bottom end of the fuel pipe (2), the bottom end of the fuel pipe (2) is tapered, and an atomization structure (4) is provided at the bottom end of the air guide pipe (1) and is sleeved on the bottom end of the fuel pipe (2); The oil diversion structure (3) includes a rotating cylinder (301), the rotating cylinder (301) is arranged at the inner bottom end of the fuel pipe (2), and the outer peripheral wall of the rotating cylinder (301) is provided with a plurality of evenly distributed diversion grooves (302); A fuel inlet pipe (5) penetrating the air guide pipe (1) is provided at the top end of the fuel pipe (2), and an air inlet pipe (6) is provided on the side wall of the air guide pipe (1).

2. An integrated fuel metering and injection valve according to claim 1, characterized in that: The atomizing structure (4) comprises a conical cylinder (401), which is sleeved on the outer peripheral wall of the conical portion of the bottom end of the fuel pipeline (2), the inner wall of the conical cylinder (401) is in contact with the outer wall of the conical end of the bottom end of the fuel pipeline (2), and the conical cylinder (401) is fixedly connected to the air guide pipeline (1), and the inner cylinder wall of the conical cylinder (401) is provided with a plurality of spiral grooves (402), and the top ends of the spiral grooves (402) are connected to the air guide pipeline (1).

3. An integrated fuel metering and injection valve according to claim 2, characterized in that: A rotating ring (303) is sleeved on the top end of the rotating cylinder (301), the rotating ring (303) is fixedly connected to the rotating cylinder (301), and a mounting groove (304) is provided inside the fuel pipe (2) for rotating with the rotating ring (303).

4. An integrated fuel metering and injection valve according to claim 3, characterized in that: The width of the diversion groove (302) gradually widens and the depth gradually shallows from top to bottom.

5. An integrated fuel metering and injection valve according to claim 4, characterized in that: A fuel metering sensor (7) is provided inside the fuel inlet pipe (5).

6. An integrated fuel metering and injection valve according to claim 5, characterized in that: The outer peripheral wall of the air guide pipe (1) is provided with an external thread (8), and the outer peripheral wall of the air guide pipe (1) is threadedly connected with a connecting lug (9).

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