High-pressure durable fuel metering and jetting integrated valve

Abstract

The utility model relates to a high-pressure durable fuel metering and jetting integrated valve which comprises a gas guide shell, a fuel shell is arranged in the gas guide shell, and a jetting pipe is arranged at the bottom end of the fuel shell. The utility model relates to the technical field of metering and spraying integrated valves. According to the high-pressure durable fuel metering and jetting integrated valve, after air enters the air guiding shell, the air pressure in the air guiding shell rises, and when the pressure of the air pressure is larger than the pulling force of the supporting structure, the pressure valve moves downwards, and at the moment, the air can flow out along a gap between the pressure valve and the air guiding shell; meanwhile, when the pressure valve moves downwards, an inner cavity of the fuel shell communicates with the interior of the gas guide shell through a liquid discharging pipe in the pressure valve, fuel can be driven to be discharged when air is discharged, then the fuel and the air can be fully mixed, the fuel can be fully atomized through the high-pressure air, and therefore the fuel atomization effect is improved. And the combustion efficiency of fuel oil can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metering and injection integrated valves, in particular to a high-pressure and durable fuel metering and injection integrated 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 existing technology, since oil will form an oil column when it is discharged, the atomization effect of air and oil is poor when they come into contact with each other. It is easy for the oil to be incompletely burned due to insufficient contact between the oil and the air. Not only will a large amount of oil be wasted, but incomplete combustion will also cause the oil to carbonize and clog the valve body. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-pressure, durable integrated fuel metering and injection valve, so as to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A high-pressure, durable, integrated fuel metering and injection valve comprises an air guide housing, a fuel housing disposed within the air guide housing, an injection pipe disposed at the bottom end of the fuel housing, a metering valve disposed on the outer wall of the air guide housing, an extension pipe disposed at the bottom end of the metering valve, the extension pipe penetrating the air guide housing and communicating with the injection pipe, and a metering sensor disposed at the position where the extension pipe inserts into the injection pipe;

[0007] A cleaning structure is provided inside the injection pipe at a position corresponding to the metering sensor, a pressure valve is provided at the bottom end of the injection pipe, a supporting structure is provided on the outer peripheral wall of the injection pipe, a fuel pipe connected to the fuel housing is provided at the top end of the gas guide housing, and an air intake pipe is provided on the side wall of the gas guide housing.

[0008] Furthermore, a guide ring is provided inside the air guide housing at a position corresponding to the injection pipe, the outer wall of the guide ring is in contact with and fixedly connected to the inner wall of the air guide housing, and the top end of the guide ring is provided with an inclined surface.

[0009] Furthermore, the pressure valve includes a closing rod, which is slidably arranged at the bottom end of the injection pipe. The bottom end of the closing rod is provided with a hemispherical closing plate, and the interior of the closing rod is provided with a drain pipe.

[0010] Furthermore, the bottom end of the guide ring is provided with an arc surface that matches the hemispherical closing plate.

[0011] Furthermore, the support structure includes a positioning ring, which is fixedly installed on the outer peripheral wall of the injection pipe. A support spring is provided at the bottom end of the positioning ring, and the bottom end of the support spring is fixedly connected to the hemispherical support plate.

[0012] Furthermore, the cleaning structure includes two rotating rings, both of which are rotatably arranged inside the spray pipe. The inner walls of the two rotating rings are commonly provided with a plurality of spiral guide plates, and the spiral guide plates are in contact with the inner wall of the spray pipe.

[0013] In summary, the present invention has at least one of the following beneficial technical effects:

[0014] 1. This high-pressure, durable integrated fuel metering and injection valve has a structure where, after air enters the air guide housing, the air pressure inside the air guide housing rises. When the air pressure exceeds the tension of the support structure, the pressure valve moves downward, allowing air to flow out through the gap between the pressure valve and the air guide housing. Simultaneously, as the pressure valve moves downward, the inner cavity of the fuel housing communicates with the interior of the air guide housing through a drain pipe inside the pressure valve. The discharge of air also causes the discharge of fuel, thereby enabling the fuel and air to be fully mixed. The high-pressure air allows the fuel to be fully atomized, effectively improving fuel combustion efficiency.

[0015] 2. This high-pressure, durable integrated fuel metering and injection valve is used to close the injection pipe by setting a closing rod. When the supporting structure is in a contracted state, the drain pipe is completely inside the injection pipe. When the air pressure pushes the hemispherical closing plate downward, the bottom end of the drain pipe is located outside the injection pipe, so as to achieve the effect of connecting the fuel shell and the gas guide shell. At this time, the fuel inside the fuel shell will flow out through the drain pipe and slide to the outer wall of the hemispherical closing plate, so that the oil forms an oil film on the surface of the hemispherical closing plate. When the air impacts, the oil film can be fully dispersed, so that the oil film is quickly atomized and discharged along with the flow of air, so as to achieve the effect of discharging fuel and air at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 This is a structural schematic diagram of a high-pressure, durable, integrated fuel metering and injection valve of the present utility model.

[0018] Figure 2This is a schematic diagram of the internal structure of a high-pressure, durable integrated fuel metering and injection valve of the present utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the fuel housing of a high-pressure, durable integrated fuel metering and injection valve of the present invention.

[0020] Figure 4 This is a structural schematic diagram of a high-pressure, durable, integrated fuel metering and injection valve of the present invention when the pressure valve is closed.

[0021] Figure 5 This is a structural schematic diagram of a high-pressure, durable integrated fuel metering and injection valve of the utility model when the pressure valve is open.

[0022] In the figure, 1. gas guide housing; 101. guide ring; 102. arc surface; 2. fuel housing; 3. injection pipe; 4. metering valve; 5. extension pipe; 6. metering sensor; 7. cleaning structure; 701. rotating ring; 702. spiral guide plate; 8. pressure valve; 801. closing rod; 802. hemispherical closing plate; 803. drain pipe; 9. supporting structure; 901. positioning ring; 902. support spring; 10. fuel pipe; 11. intake pipe. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] Example:

[0025] Reference Figure 1 - Figure 5 The utility model discloses a high-pressure, durable integrated fuel metering and injection valve, comprising an air guide housing 1, a fuel housing 2 disposed within the air guide housing 1, an injection pipe 3 disposed at the bottom end of the fuel housing 2, a metering valve 4 disposed on the outer wall of the air guide housing 1, an extension pipe 5 disposed at the bottom end of the metering valve 4, the extension pipe 5 passing through the air guide housing 1 and communicating with the injection pipe 3, a metering sensor 6 disposed at the position where the extension pipe is inserted into the injection pipe 3;

[0026] A cleaning structure 7 is provided inside the injection pipe 3 and at a position corresponding to the metering sensor 6. A pressure valve 8 is provided at the bottom end of the injection pipe 3. A supporting structure 9 is provided on the outer peripheral wall of the injection pipe 3. A fuel pipe 10 connected to the fuel housing 2 is provided at the top end of the gas guide housing 1, and an air intake pipe 11 is provided on the side wall of the gas guide housing 1.

[0027] In this embodiment, when in use, air is introduced into the interior of the air guide housing 1 through the air intake pipe 11, and fuel is introduced into the interior of the fuel housing 2 through the fuel pipe 10. After the air enters the interior of the air guide housing 1, the air pressure inside the air guide housing 1 rises. When the air pressure is greater than the tension of the support structure 9, as shown in FIG. Figure 5 As shown, A is the flow trajectory of oil, and B is the flow trajectory of air;

[0028] At this time, the pressure valve 8 will move downward, separating the air guide housing 1 and the pressure valve 8 from each other, forming a passage. At this time, the air can flow out along the gap between the pressure valve 8 and the air guide housing 1. At the same time, when the pressure valve 8 moves downward, the inner cavity of the fuel housing 2 is connected to the interior of the air guide housing 1 through the pipe inside the pressure valve 8. At this time, when the air is discharged, it will also drive the fuel to be discharged, thereby enabling the fuel and air to be fully mixed, and the fuel can be fully atomized through the high-pressure air, thereby achieving the purpose of improving the combustion efficiency of the fuel.

[0029] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a guide ring 101 is provided inside the air guide housing 1 at a position corresponding to the injection pipe 3. The outer wall of the guide ring 101 is in contact with and fixedly connected to the inner wall of the air guide housing 1, and the top of the guide ring 101 is provided with an inclined surface.

[0030] In this embodiment, the bottom end of the air guide housing 1 is contracted by the provision of the guide ring 101. When the air enters the guide ring 101, since the inner diameter of the guide ring 101 is smaller than the inner diameter of the air guide housing 1, the speed of the air movement can be effectively increased, and the speed of the air discharge can be increased, thereby further improving the effect of oil atomization.

[0031] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the pressure valve 8 includes a closing rod 801, which is slidably arranged at the bottom end of the injection pipe 3. The bottom end of the closing rod 801 is provided with a hemispherical closing plate 802, and the interior of the closing rod 801 is provided with a drain pipe 803.

[0032] In this embodiment, the sealing rod 801 is provided to seal the spray pipe 3. When the support structure 9 is in the contracted state, the drain pipe 803 is completely inside the spray pipe 3. Figure 4 As shown, when the air pressure pushes the hemispherical closing plate 802 to move downward, the bottom end of the drain pipe 803 is located outside the injection pipe 3, so as to achieve the effect of connecting the fuel shell 2 and the gas guide shell 1. At this time, the fuel inside the fuel shell 2 will flow out through the drain pipe 803, slide to the outer wall of the hemispherical closing plate 802, and be discharged along with the flow of air, so as to achieve the effect of discharging the fuel and air at the same time.

[0033] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the bottom end of the guide ring 101 is provided with an arc surface 102 that matches the hemispherical closing plate 802.

[0034] In this embodiment, by providing the arc surface 102 , when the support structure 9 is in the contracted state, the hemispherical closing plate 802 and the bottom end of the guide ring 101 can fit tightly together, thereby achieving the purpose of sealing the air guide housing 1 .

[0035] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the support structure 9 includes a positioning ring 901, which is fixedly mounted on the outer wall of the injection pipe 3. A support spring 902 is provided at the bottom end of the positioning ring 901, and the bottom end of the support spring 902 is fixedly connected to the hemispherical support plate.

[0036] In this embodiment, the positioning ring 901 is used to install the support spring 902, and the support spring 902 provides an upward pulling force to the hemispherical support plate, so that the hemispherical support plate can be tightly attached to the arc surface 102 to achieve the purpose of sealing the air guide housing 1.

[0037] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the cleaning structure 7 includes two rotating rings 701, both of which are rotatably arranged inside the spray pipe 3, and the inner walls of the two rotating rings 701 are jointly provided with a plurality of spiral guide plates 702, and the spiral guide plates 702 are in contact with the inner wall of the spray pipe 3.

[0038] In this embodiment, the spiral guide plate 702 is installed through the setting of the rotating ring 701. When the internal oil of the injection pipe 3 flows, the spiral guide plate 702 is pushed to rotate, and then the spiral guide plate 702 rubs against the inner wall of the injection pipe 3. Since the metering sensor 6 is arranged inside the injection pipe 3 and is located at the position of the extension pipe 5, and the curvature of the metering sensor 6 is equal to that of the inner wall of the injection pipe 3, the metering sensor 6 can be cleaned during the transmission of the spiral guide plate 702 to improve the accuracy of the metering sensor 6.

[0039] 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. A high-pressure, durable fuel metering and injection integrated valve, characterized in that: The invention comprises an air guide housing (1), a fuel housing (2) is provided inside the air guide housing (1), an injection pipe (3) is provided at the bottom end of the fuel housing (2), a metering valve (4) is provided on the outer wall of the air guide housing (1), an extension pipe (5) is provided at the bottom end of the metering valve (4), the extension pipe (5) passes through the air guide housing (1) and is connected to the injection pipe (3), and a metering sensor (6) is provided at the position where the extension pipe (5) is inserted into the injection pipe (3); A cleaning structure (7) is provided inside the injection pipe (3) at a position corresponding to the metering sensor (6); a pressure valve (8) is provided at the bottom end of the injection pipe (3); a supporting structure (9) is provided on the outer peripheral wall of the injection pipe (3); a fuel pipe (10) connected to the fuel housing (2) is provided at the top end of the air guide housing (1); and an air inlet pipe (11) is provided on the side wall of the air guide housing (1).

2. A high-pressure, durable integrated fuel metering and injection valve according to claim 1, characterized in that: A guide ring (101) is provided at a position inside the air guide housing (1) corresponding to the injection pipe (3); the outer wall of the guide ring (101) is in contact with and fixedly connected to the inner wall of the air guide housing (1); and the top end of the guide ring (101) is provided with an inclined surface.

3. A high-pressure, durable integrated fuel metering and injection valve according to claim 2, characterized in that: The pressure valve (8) includes a closing rod (801) which is slidably arranged at the bottom end of the injection pipe (3). A hemispherical closing plate (802) is arranged at the bottom end of the closing rod (801). A liquid discharge pipe (803) is arranged inside the closing rod (801).

4. A high-pressure, durable integrated fuel metering and injection valve according to claim 3, characterized in that: The bottom end of the guide ring (101) is provided with an arc surface (102) that matches the hemispherical closing plate (802).

5. A high-pressure, durable integrated fuel metering and injection valve according to claim 4, characterized in that: The support structure (9) includes a positioning ring (901), which is fixedly mounted on the outer peripheral wall of the injection pipe (3). A support spring (902) is provided at the bottom end of the positioning ring (901), and the bottom end of the support spring (902) is fixedly connected to the hemispherical support plate.

6. A high-pressure, durable integrated fuel metering and injection valve according to claim 5, characterized in that: The cleaning structure (7) comprises a rotating ring (701), two rotating rings (701) are provided, and both are rotatably arranged inside the spray pipe (3), and the inner walls of the two rotating rings (701) are jointly provided with a plurality of spiral guide plates (702), and the spiral guide plates (702) are in contact with the inner wall of the spray pipe (3).

Images