Diesel engine scavenging pipe

Abstract

The utility model discloses a diesel engine scavenging pipe, which relates to the technical field of scavenging pipes, and comprises a pipe fitting, the outer side of the pipe fitting is connected with a pipe sleeve seat in a penetrating manner, the other side of the pipe fitting is provided with a sealing cover plate, the other end of the pipe fitting is provided with a limiting mechanism, and the limiting mechanism is used for positioning a filter element for a diesel engine. And the limiting size is adjusted according to the size of the filter element, a filtering mechanism is arranged in the pipe fitting, the filtering mechanism purifies waste gas in the pipe fitting again, and the situation that the interior of the pipe fitting is blocked due to excessive dust in the waste gas is avoided. In the using process, the outer tooth pipe rotates in the outer positioning pipe, then the connection size of the outer tooth pipe and the flange plate is adjusted, the filter element top disc is transversely pushed on the outer side of the outer positioning pipe, and the filter element on one side and the filter element top disc are fastened.

Description

Technical Field

[0001] The utility model relates to the technical field of scavenging pipes, in particular to a scavenging pipe for a diesel engine. Background Art

[0002] The working principle of the diesel engine scavenge box is to increase the area of ​​the intake pipe to alleviate the intake resistance caused by the narrow intake duct and the filter resistance, so that the diesel engine intake volume is more sufficient and the combustion is more complete. At the same time, the convex design of the scavenge box can also help evenly distribute and accelerate the airflow, increase the exhaust gas flow rate and intake volume. In this way, the diesel engine can obtain more oxygen, which makes the combustion more complete and powerful.

[0003] The diesel engine scavenging pipe now mainly positions the filter element through the flange, but the size of the filter element will increase the difficulty of limiting the position according to the power of the diesel engine. During the installation process, there is a lack of structure for positioning filter elements of different sizes, which affects the difficulty of removing and installing the filter element of the scavenging pipe. In addition, the interior of the scavenging pipe is a hollow structure, and some dust generated during the exhaust process will accumulate at the bend, which will cause the scavenging pipe to be blocked for a long time. Summary of the invention

[0004] The utility model aims to provide a diesel engine scavenging pipe to solve the above-mentioned defects caused by the prior art.

[0005] A diesel engine scavenging pipe comprises a pipe fitting, wherein a pipe sleeve seat is connected through the outer side of the pipe fitting, a sealing cover plate is arranged on the other side of the pipe fitting, and a limiting mechanism is arranged on the other end of the pipe fitting, wherein the limiting mechanism positions a filter element for the diesel engine and then adjusts the limiting size according to the size of the filter element, and a filtering mechanism is arranged inside the pipe fitting, wherein the filtering mechanism once again purifies the exhaust gas inside the pipe fitting to avoid excessive dust in the exhaust gas and cause internal blockage of the pipe fitting.

[0006] Preferably, the limiting mechanism includes an external threaded tube, an external positioning tube, a filter element top plate, a fastening hole and a flange. A flange is provided on one side of the pipe fitting, and the other side of the flange is penetrated and connected with the external threaded tube, and the other side of the external threaded tube is connected with the external positioning tube, and one side of the external positioning tube is penetrated and connected with the filter element top plate, and a fastening hole is penetrated on the outer side of the filter element top plate, and the filter element top plate is arranged on one side of the pipe fitting, and the flange is arranged on one side of the pipe fitting.

[0007] Preferably, the outer threaded tube is connected to the top plate of the filter element through an outer positioning tube arranged on one side.

[0008] Preferably, the filtering mechanism includes fasteners, a fan, a metal filter cover, an outer thread sleeve and an inner thread groove, the fasteners are distributed in a ring shape on the outside of the sealing cover plate, an inner thread groove is provided on one side of the sealing cover plate, an outer thread sleeve is connected to the inside of the inner thread groove, a metal filter cover is provided on the other side of the outer thread sleeve, and a fan is provided inside the metal filter cover.

[0009] Preferably, the metal filter cover is connected to the inner groove through an outer sleeve provided on one side.

[0010] Preferably, the outer side of the external tube is threadedly connected with a fastening nut.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. During use, the external tube is rotated inside the external positioning tube to adjust the size of the connection between the external tube and the flange, and the filter element top plate is pushed laterally on the outside of the external positioning tube to tighten the filter element and the filter element top plate on one side, thereby satisfying the positioning and limiting treatment of exhaust gas filter elements of different sizes, and improving the efficiency of exhaust gas filter element removal and replacement.

[0013] 2. During the installation process, first pull the filter element top plate to make the filter element top plate slide on the outside of the external positioning tube, and position and install the exhaust gas filter element through the external positioning tube and the filter element top plate, so as to improve the efficiency of rapid installation and disassembly of the overall filter element and pipe fittings, and quickly install it through the external threaded tube and the filter element top plate, and lock the connection between the external threaded tube and the flange through the fastening nut, so as to improve the flexibility of installing filter elements of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the top view structure of the pipe fitting in the utility model.

[0016] Figure 3 It is a schematic diagram of the side section structure of the sealing cover plate in the utility model.

[0017] Figure 4 It is a schematic diagram of the side section structure of the sealing cover plate and the metal filter cover in the utility model.

[0018] Figure 5 It is a schematic diagram of the side view structure of the pipe fitting in the utility model.

[0019] in:

[0020] 1. Pipe fittings; 2. Pipe sleeve seat; 3. External threaded pipe; 4. Limiting mechanism; 5. External positioning pipe; 6. Filter element top plate; 7. Fastening holes; 8. Flange; 9. Filter mechanism; 10. Sealing cover; 11. Fasteners; 12. Fan; 13. Metal filter cover; 14. External threaded sleeve; 15. Internal threaded groove; 16. Fastening nut. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figures 1 to 5 As shown, the diesel engine scavenging pipe includes a pipe fitting 1, the outer side of the pipe fitting 1 is penetrated and connected with a pipe sleeve seat 2, the other side of the pipe fitting 1 is provided with a sealing cover plate 10, and the other end of the pipe fitting 1 is provided with a limiting mechanism 4, the limiting mechanism 4 positions the filter element for the diesel engine, and then adjusts the limiting size according to the size of the filter element, and the inside of the pipe fitting 1 is provided with a filtering mechanism 9, the filtering mechanism 9 purifies the exhaust gas inside the pipe fitting 1 again to avoid excessive dust in the exhaust gas, which causes internal blockage of the pipe fitting 1.

[0023] In this embodiment, the limiting mechanism 4 includes an external threaded tube 3, an external positioning tube 5, a filter element top plate 6, a fastening hole 7 and a flange 8. A flange 8 is provided on one side of the pipe fitting 1, and the other side of the flange 8 is penetrated and connected with the external threaded tube 3, and the other side of the external threaded tube 3 is connected with the external positioning tube 5. One side of the external positioning tube 5 is penetrated and connected with the filter element top plate 6, and the outer side of the filter element top plate 6 is penetrated with a fastening hole 7. The filter element top plate 6 is arranged on one side of the pipe fitting 1, and the flange 8 is arranged on one side of the pipe fitting 1. The top end of the scavenging box is connected through the flange 8, and the extruded gas of the scavenging box is purified and discharged.

[0024] In this embodiment, the outer threaded tube 3 is connected to the top plate 6 of the filter element through an outer positioning tube 5 provided on one side, and the outer threaded tube 3 is rotated inside the outer positioning tube 5 to adjust the unfolded size.

[0025] In this embodiment, the filtering mechanism 9 includes a fastener 11, a fan 12, a metal filter cover 13, an outer thread sleeve 14 and an inner thread groove 15. The fastener 11 is distributed in an annular manner on the outer side of the sealing cover plate 10. An inner thread groove 15 is provided on one side of the sealing cover plate 10. The inner part of the inner thread groove 15 is connected to the outer thread sleeve 14. The other side of the outer thread sleeve 14 is provided with a metal filter cover 13. The metal filter cover 13 is provided with a fan 12. The exhaust gas inside the scavenging box is discharged through the fan 12, thereby improving the exhaust gas discharge and filtering efficiency.

[0026] In this embodiment, the metal filter cover 13 is connected to the inner groove 15 through an outer sleeve 14 provided on one side, and the dust in the exhaust gas is further filtered through the metal filter cover 13 to prevent the dust from adhering to the inside of the pipe 1 and causing blockage.

[0027] In this embodiment, the outer side of the external tube 3 is threadedly connected with a fastening nut 16 , and the external tube 3 , the fastening nut 16 and the flange 8 are butt-jointed and installed.

[0028] In practical application, this diesel engine scavenging pipe includes the following work contents:

[0029] Step 1: The operator sets the external threaded tube 3 through one side of the flange 8, and rotates the external threaded tube 3 by tightening the nut 16, and positions the external positioning tube 5 and the external threaded tube 3, and directly places the exhaust gas filter element between the four groups of external positioning tubes 5, and pushes the filter element top plate 6, and uses the filter element top plate 6 to position one side of the exhaust gas filter element. And position one side of the exhaust gas filter element through the flange 8 to prevent external oil or dust from directly blocking the pipe 1, and the pipe sleeve seat 2 positions the bottom end of the pipe 1;

[0030] Step 2: The fuel injection system in the box directly sprays the fuel mixture into the scavenging box body. The two-stroke engine needs fresh oil-gas mixture to "squeeze" the exhaust gas after combustion out of the cylinder. The dust in the discharge process is filtered through the pipe 1 set on one side, and the exhaust gas is driven by the fan 12 to blow, thereby accelerating the efficiency of exhaust gas emission. When the metal filter cover 13 is disassembled, the sealing cover plate 10 and one side of the pipe 1 are disassembled by loosening the fastener 11, and then the oil or dust on the surface of the metal filter cover 13 is washed and cleaned;

[0031] Step 3: The operator can turn on the fan 12, and the exhaust gas from the outside is directly drawn into the interior of the pipe fitting 1 through the opening on one side of the pipe fitting 1 through the fan 12, and the dust and water vapor in the exhaust gas are dried through the limiting mechanism 4 set on one side of the pipe fitting 1, and then pass through the metal filter cover 13 again. The metal filter cover 13 further filters the dust in the exhaust gas, and directly guides the exhaust gas out through the through hole opened on the other side of the pipe fitting 1.

[0032] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A diesel engine scavenging pipe, characterized in that: The invention comprises a pipe fitting (1), wherein the outer side of the pipe fitting (1) is connected to a pipe sleeve seat (2), a sealing cover plate (10) is arranged on the other side of the pipe fitting (1), a limiting mechanism (4) is arranged on the other end of the pipe fitting (1), the limiting mechanism (4) performs positioning processing on a filter element for a diesel engine, and then adjusts the limiting size according to the size of the filter element, and a filtering mechanism (9) is arranged inside the pipe fitting (1), and the filtering mechanism (9) once again purifies the exhaust gas inside the pipe fitting (1) to avoid excessive dust in the exhaust gas, which may cause internal blockage of the pipe fitting (1).

2. The diesel engine scavenging pipe according to claim 1, characterized in that: The limiting mechanism (4) comprises an external threaded tube (3), an external positioning tube (5), a filter element top plate (6), a fastening hole (7) and a flange (8); a flange (8) is provided on one side of the pipe fitting (1); the other side of the flange (8) is connected to the external threaded tube (3); the other side of the external threaded tube (3) is connected to the external positioning tube (5); one side of the external positioning tube (5) is connected to the filter element top plate (6); a fastening hole (7) is provided on the outer side of the filter element top plate (6); the filter element top plate (6) is provided on one side of the pipe fitting (1); and the flange (8) is provided on one side of the pipe fitting (1).

3. The diesel engine scavenging pipe according to claim 2, characterized in that: The outer threaded tube (3) is connected to the filter element top plate (6) through an outer positioning tube (5) arranged on one side.

4. The diesel engine scavenging pipe according to claim 1, characterized in that: The filtering mechanism (9) comprises a fastener (11), a fan (12), a metal filter screen cover (13), an outer thread sleeve (14) and an inner thread groove (15); the fastener (11) is distributed in an annular manner on the outer side of the sealing cover plate (10); one side of the sealing cover plate (10) is provided with an inner thread groove (15); the inner part of the inner thread groove (15) is connected to the outer thread sleeve (14); the other side of the outer thread sleeve (14) is provided with a metal filter screen cover (13); the inner part of the metal filter screen cover (13) is provided with a fan (12).

5. The diesel engine scavenging pipe according to claim 4, characterized in that: The metal filter screen cover (13) is connected to the inner thread groove (15) via an outer thread sleeve (14) arranged on one side.

6. The diesel engine scavenging pipe according to claim 2, characterized in that: The outer side of the external threaded tube (3) is threadedly connected with a fastening nut (16).

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