Anti-explosion exhaust pipe of diesel engine

Abstract

The utility model relates to the technical field of diesel engine components, and discloses a diesel engine anti-explosion exhaust pipe which comprises an anti-explosion exhaust mechanism, the anti-explosion exhaust mechanism comprises an anti-explosion exhaust pipe body, an installation mechanism and an air inlet mechanism are arranged on the outer side of the anti-explosion exhaust pipe body, and a noise reduction groove is formed between the center positions of the two side walls of the anti-explosion exhaust pipe body. And an air outlet guide cover is fixedly mounted at an opening in one end of the silencing groove. The catalytic converter is arranged on the middle section of the whole diesel engine exhaust pipe and connected with the air inlet end of the diesel engine exhaust pipe in a welding mode, the air inlet cover threaded connector at one end of the catalytic converter is matched with the air outlet end and provided with the threaded connector, and the catalytic converter and the air inlet cover threaded connector are in threaded connection. The catalytic converter and the air outlet end of the exhaust pipe are convenient to disassemble and assemble and can be disassembled regularly, accumulated carbon in the catalytic converter can be cleaned, heat accumulation at the catalytic converter can be avoided in cooperation with a heat dissipation groove structure on the outer side of the catalytic converter, and then the anti-explosion performance of the whole exhaust pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine components, in particular to an explosion-proof exhaust pipe for a diesel engine. Background Technique

[0002] At present, internal combustion engines are widely used, including diesel engines, which include the exhaust pipes of diesel engines. The design of the exhaust pipes is mainly to guide exhaust gas out of the engine, while reducing noise and harmful emissions. It usually includes a muffler and a catalytic converter to help reduce noise and convert harmful gases. In terms of design, it is also necessary to ensure smooth exhaust to improve engine performance.

[0003] The existing diesel engine exhaust pipes still have the following problems when in use: its catalytic converter is usually arranged in the middle section of the overall diesel engine exhaust pipe and is connected to the intake end and the outlet end of the diesel engine exhaust pipe by welding. Its disassembly and assembly are inconvenient, and it is extremely easy to accumulate carbon and heat inside, thereby reducing the explosion-proof performance of the overall exhaust pipe. At the same time, the silencing end at the outlet end of the diesel engine usually adopts a rigid connection for installation, which is not conducive to the shock absorption and noise reduction of the silencing end. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides an explosion-proof exhaust pipe for a diesel engine, which solves the problems raised in the background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present utility model provides the following technical solutions: A diesel engine explosion-proof exhaust pipe, including an explosion-proof exhaust mechanism. The explosion-proof exhaust mechanism includes an explosion-proof exhaust pipe. An installation mechanism and an intake mechanism are arranged outside the explosion-proof exhaust pipe. A sound-absorbing groove is opened between the central positions of the two side walls of the explosion-proof exhaust pipe. An air outlet guiding cover is fixedly installed at the opening at one end of the sound-absorbing groove, and an intake cover is fixedly installed at the opening at the other end of the sound-absorbing groove. A threaded interface is opened at the central position of the intake cover. The intake mechanism includes a threaded joint threadedly installed in the threaded interface. The other end of the threaded joint is fixedly connected to a catalytic converter. The interface at the other end of the catalytic converter is fixedly welded to an intake pipe. The interface at the end of the intake pipe away from the catalytic converter is fixedly connected to a connecting flange. A plurality of heat dissipation grooves are arranged at equal angles on the outer circumferential wall of the catalytic converter. The catalytic converter is arranged in the middle section of the overall diesel engine exhaust pipe and is connected to the intake end of the diesel engine exhaust pipe by welding. However, one end is provided with a threaded joint in cooperation with the threaded interface of the intake cover at the air outlet end, and the two are threadedly connected. The catalytic converter and the exhaust pipe air outlet end are convenient to disassemble and assemble, and can be disassembled regularly to clean the carbon deposits inside the catalytic converter. With the heat dissipation groove structure outside the catalytic converter, heat accumulation at the catalytic converter can be avoided, thereby improving the explosion-proof performance of the overall exhaust pipe.

[0008] As a further scheme of the present utility model: The explosion-proof exhaust pipe, the intake cover, the explosion-proof exhaust pipe and the air outlet guiding cover are all made of high-temperature resistant materials. The exhaust temperature of the diesel engine exhaust pipe is higher than that of the gasoline engine. Since the exhaust pipe works in a high-temperature environment, high-temperature resistant materials are used. The specific materials include but are not limited to stainless steel, nickel-based alloys and titanium alloys, etc.

[0009] As a further scheme of the present utility model: A sound-absorbing spiral is arranged on the inner wall of the sound-absorbing groove. The opening at one end of the air outlet guiding cover is arranged in an inclined downward shape. The exhaust end of the diesel engine can be connected to the connecting component through the connecting flange. The gas discharged from the diesel engine is transmitted to the catalytic converter through the intake pipe for catalytic conversion, and then discharged through the air outlet guiding cover after being silenced by the sound-absorbing spiral in the sound-absorbing groove of the explosion-proof exhaust pipe.

[0010] As a further scheme of the present utility model: The installation mechanism includes two elastic pipe clamps symmetrically arranged outside the explosion-proof exhaust pipe. A plurality of shock-absorbing rubber blocks are fixedly connected to the inner side wall of the elastic pipe clamps at equal angles in an arc shape. The plurality of shock-absorbing rubber blocks are attached to the outer wall of the explosion-proof exhaust pipe. The silencing end body at the air outlet end of the diesel engine is the explosion-proof exhaust pipe. An elastic pipe clamp is arranged on the outer wall of the explosion-proof exhaust pipe. A plurality of shock-absorbing rubber blocks are arranged at equal distances in an arc shape on the inner wall of the elastic pipe clamp to contact the outer wall of the explosion-proof exhaust pipe, and are fixedly installed outside the explosion-proof exhaust pipe through the bolt structure at the bottom of the elastic pipe clamp. Compared with directly using rigid connectors for fastening connection and installation, it is beneficial to the shock absorption and silencing of the silencing end.

[0011] As a further solution of the present utility model: at the front and rear side walls of the bottom notch of the elastic pipe clamp, a connecting piece is fixedly connected to each, a through hole is opened between the central positions of the front and rear side walls of the connecting piece, and the same bolt is fixedly installed in two through holes arranged symmetrically in the front and rear. At the central position of the outer side wall of the top of the elastic pipe clamp, a connecting rod is fixedly connected, the top wall of the connecting rod is fixedly connected with a mounting seat, a plurality of shock-absorbing rubber strips are fixedly connected to the top wall of the mounting seat at equal intervals from front to back, at the front and rear ends below the connecting rod, a reinforcing block is fixedly connected to each, the bottom wall of the reinforcing block is fixedly connected to the elastic pipe clamp, and at the top end of the elastic pipe clamp, there is a connecting and mounting structure of the pipe clamp, which includes a connecting rod fixedly connected to the top end of the elastic pipe clamp, the top end of the connecting rod is fixedly connected with a mounting seat, and mounting holes are opened at the front and rear ends of the mounting seat, which can cooperate with the mounting parts to fixedly install the overall exhaust pipe at the corresponding working station. A reinforcing block is arranged between the connecting rod and the elastic pipe clamp for reinforcement. At the same time, a plurality of shock-absorbing rubber strips are arranged on the top of the mounting seat to further improve the shock absorption and reliability after the mounting seat is installed.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. In the present utility model, the catalytic converter is arranged in the middle section of the overall diesel engine exhaust pipe and is connected to the intake end of the diesel engine exhaust pipe by welding. One end is provided with a threaded joint in cooperation with the threaded interface of the intake hood at the outlet end, and the two are threadedly connected. The disassembly and assembly between the catalytic converter and the outlet end of the exhaust pipe are convenient, and it can be disassembled regularly to clean the carbon deposits inside the catalytic converter. With the heat dissipation groove structure outside the catalytic converter, the heat accumulation at the catalytic converter can be avoided, thereby improving the explosion-proof performance of the overall exhaust pipe.

[0014] 2. In the present utility model, the explosion-proof exhaust pipe at the outlet end of the diesel engine is self-equipped with a silencing structure, and elastic pipe clamps are arranged on the outer wall of the explosion-proof exhaust pipe. A plurality of shock-absorbing rubber blocks are arranged on the inner wall of the elastic pipe clamp in an arc shape at equal intervals to contact the outer wall of the explosion-proof exhaust pipe, and are fixedly installed on the outside of the explosion-proof exhaust pipe through the bolt structure at the bottom of the elastic pipe clamp. Compared with directly using rigid connecting parts for fastening connection and installation, it is beneficial to the shock absorption and silencing of the silencing end.

[0015] 3. In the present utility model, at the top end of the elastic pipe clamp, there is a connecting and mounting structure of the pipe clamp, which includes a connecting rod fixedly connected to the top end of the elastic pipe clamp, the top end of the connecting rod is fixedly connected with a mounting seat, and mounting holes are opened at the front and rear ends of the mounting seat, which can cooperate with the mounting parts to fixedly install the overall exhaust pipe at the corresponding working station. A reinforcing block is arranged between the connecting rod and the elastic pipe clamp for reinforcement. At the same time, a plurality of shock-absorbing rubber strips are arranged on the top of the mounting seat to further improve the shock absorption and reliability after the mounting seat is installed. Description of the Drawings

[0016] Figure 1 is the overall three-dimensional view of the present utility model Figure 1 ;

[0017] Figure 2 is the overall three-dimensional view of the present utility model Figure 2 ;

[0018] Figure 3 is the three-dimensional view of the explosion-proof exhaust mechanism of the present utility model;

[0019] Figure 4 is the three-dimensional view of the installation mechanism of the present utility model;

[0020] Figure 5 is the three-dimensional view of the air intake mechanism of the present utility model.

[0021] In the figure: 1. Explosion-proof exhaust mechanism; 2. Installation mechanism; 3. Air intake mechanism; 11. Explosion-proof exhaust pipe; 12. Sound absorption groove; 13. Sound absorption helix; 14. Air intake hood; 15. Threaded interface; 16. Air outlet guiding hood; 21. Elastic pipe clamp; 22. Shock-absorbing rubber block; 23. Connecting piece; 24. Bolt; 25. Connecting rod; 26. Reinforcing block; 27. Mounting seat; 28. Shock-absorbing rubber strip; 31. Catalytic converter; 32. Threaded joint; 33. Heat dissipation groove; 34. Air inlet pipe; 35. Connecting flange. Specific embodiments

[0022] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0023] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Please refer to Figures 1 to 5 , in an embodiment of the present utility model, a diesel engine explosion-proof exhaust pipe includes an explosion-proof exhaust mechanism 1. The explosion-proof exhaust mechanism 1 includes an explosion-proof exhaust pipe 11. An installation mechanism 2 and an intake mechanism 3 are arranged outside the explosion-proof exhaust pipe 11. A sound-absorbing groove 12 is formed between the central positions of the two side walls of the explosion-proof exhaust pipe 11. An air outlet guiding cover 16 is fixedly installed at the opening at one end of the sound-absorbing groove 12, and an intake cover 14 is fixedly installed at the opening at the other end of the sound-absorbing groove 12. A threaded interface 15 is formed at the central position of the intake cover 14. The intake mechanism 3 includes a threaded joint 32 threadedly installed in the threaded interface 15. The other end of the threaded joint 32 is fixedly connected to a catalytic converter 31. A connecting pipe 34 is fixedly welded to the interface at the other end of the catalytic converter 31. A connecting flange 35 is fixedly connected to the interface at one end of the connecting pipe 34 away from the catalytic converter 31. A plurality of heat dissipation grooves 33 are formed at equal angles on the outer circumferential wall of the catalytic converter 31. The catalytic converter 31 is arranged in the middle section of the overall diesel engine exhaust pipe and is connected to the intake end of the diesel engine exhaust pipe by welding. One end of it is provided with a threaded joint 32 in cooperation with the threaded interface 15 of the intake cover 14 at the air outlet end, and the two are threadedly connected. The catalytic converter 31 and the exhaust pipe air outlet end are convenient to disassemble and assemble, and can be regularly disassembled to clean the carbon accumulation inside the catalytic converter 31. With the heat dissipation groove 33 structure outside the catalytic converter 31, heat accumulation at the catalytic converter 31 can be avoided, thereby improving the explosion-proof performance of the overall exhaust pipe.

[0026] The explosion-proof exhaust pipe 11, the intake cover 14, the explosion-proof exhaust pipe 11 and the air outlet guiding cover 16 are all made of high-temperature resistant materials. The exhaust temperature of the diesel engine exhaust pipe is higher than that of the gasoline engine. Since the exhaust pipe works in a high-temperature environment, high-temperature resistant materials are used. The specific materials include but are not limited to stainless steel, nickel-based alloys, and titanium alloys, etc.

[0027] A sound-absorbing spiral 13 is arranged on the inner wall of the sound-absorbing groove 12. One end opening of the air outlet guiding cover 16 is arranged in an inclined downward shape. The exhaust end of the diesel engine can be connected through the connecting flange 35 in cooperation with a connecting component. The gas discharged from the diesel engine is transmitted to the catalytic converter 31 through the connecting pipe 34 for catalytic conversion, and then discharged through the air outlet guiding cover 16 after being silenced by the sound-absorbing spiral 13 in the sound-absorbing groove 12 of the explosion-proof exhaust pipe 11.

[0028] The installation mechanism 2 includes two elastic pipe clamps 21 symmetrically arranged outside the explosion-proof exhaust pipe 11. A plurality of shock-absorbing rubber blocks 22 are fixedly connected to the inner side wall of the elastic pipe clamp 21 in an arc shape at equal angles. The plurality of shock-absorbing rubber blocks 22 are attached to the outer wall of the explosion-proof exhaust pipe 11. The silencing end main body at the diesel engine air outlet end is the explosion-proof exhaust pipe 11. An elastic pipe clamp 21 is arranged at the outer wall of the explosion-proof exhaust pipe 11. A plurality of shock-absorbing rubber blocks 22 are arranged at equal intervals in an arc shape on the inner wall of the elastic pipe clamp 21 to contact the outer wall of the explosion-proof exhaust pipe 11, and are fixedly installed outside the explosion-proof exhaust pipe 11 through the bolt 24 structure at the bottom of the elastic pipe clamp 21. Compared with directly using rigid connectors for fastening and installation, it is beneficial to the shock absorption and noise reduction of the silencing end.

[0029] At the notch at the bottom of the elastic pipe clamp 21, a connecting piece 23 is fixedly connected to each of the front and rear side walls. A through hole is formed between the center positions of the front and rear side walls of the connecting piece 23, and the same bolt 24 is fixedly installed in the two through holes arranged symmetrically in the front and rear. A connecting rod 25 is fixedly connected to the center position of the outer side wall at the top of the elastic pipe clamp 21. An installation seat 27 is fixedly connected to the top wall of the connecting rod 25. A plurality of shock-absorbing rubber strips 28 are fixedly connected to the top wall of the installation seat 27 at equal intervals from front to back. At the front and rear ends below the connecting rod 25, a reinforcing block 26 is fixedly connected to each. The bottom wall of the reinforcing block 26 is fixedly connected to the elastic pipe clamp 21. The top end of the elastic pipe clamp 21 is provided with a connection and installation structure of the pipe clamp, which includes a connecting rod 25 fixedly connected to the top end of the elastic pipe clamp 21. The top end of the connecting rod 25 is fixedly connected to the installation seat 27. Installation holes are formed at the front and rear ends of the installation seat 27, which can cooperate with the installation parts for the fixed installation of the overall exhaust pipe at the corresponding working station. A reinforcing block 26 is arranged between the connecting rod 25 and the elastic pipe clamp 21 for reinforcement. At the same time, a plurality of shock-absorbing rubber strips 28 are arranged on the top of the installation seat 27 to further improve the shock absorption and reliability after the installation of the installation seat 27.

[0030] The working principle of the present utility model is as follows: It can be connected to the exhaust end of the diesel engine through the connection flange 35 in cooperation with the connection component. The gas emitted by the diesel engine is transmitted to the catalytic converter 31 through the intake pipe 34 for catalytic conversion, and then discharged through the air outlet guiding cover 16 after being silenced by the silencing spiral 13 in the silencing groove 12 of the explosion-proof exhaust pipe 11. The catalytic converter 31 is arranged in the middle section of the overall diesel engine exhaust pipe and is connected to the intake end of the diesel engine exhaust pipe by welding. One end is provided with a threaded joint 32 in cooperation with the threaded interface 15 of the intake hood 14 at the air outlet end, and the two are threadedly connected. The disassembly and assembly between the catalytic converter 31 and the exhaust pipe air outlet end are convenient, and it can be disassembled regularly to clean the carbon accumulation inside the catalytic converter 31. With the heat dissipation groove 33 structure on the outside of the catalytic converter 31, the heat accumulation at the catalytic converter 31 can be avoided, thereby improving the explosion-proof performance of the overall exhaust pipe. In addition, elastic pipe clamps 21 are arranged on the outer wall of the explosion-proof exhaust pipe 11. A plurality of shock-absorbing rubber blocks 22 are arranged in an arc-shaped and equidistant manner on the inner wall of the elastic pipe clamps 21 to contact the outer wall of the explosion-proof exhaust pipe 11, and are firmly installed on the outside of the explosion-proof exhaust pipe 11 through the bolt 24 structure at the bottom of the elastic pipe clamps 21. Compared with directly using rigid connectors for fastening and installation, it is beneficial to the shock absorption and noise reduction of the silencing end.

[0031] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. An explosion-proof exhaust pipe for a diesel engine, comprising an explosion-proof exhaust mechanism (1), wherein the explosion-proof exhaust mechanism (1) comprises an explosion-proof exhaust pipe (11), and a mounting mechanism (2) and an air intake mechanism (3) are arranged outside the explosion-proof exhaust pipe (11); Features: A silencer groove (12) is provided between the central positions of the two side walls of the explosion-proof exhaust pipe (11); an air outlet guide cover (16) is fixedly installed at the opening of one end of the silencer groove (12); and an air inlet cover (14) is fixedly installed at the opening of the other end of the silencer groove (12); A threaded interface (15) is provided at the center of the air intake cover (14); the air intake mechanism (3) comprises a threaded joint (32) threadedly mounted in the threaded interface (15); the other end of the threaded joint (32) is fixedly connected to a catalytic converter (31); An air intake pipe (34) is fixedly welded to an interface at the other end of the catalytic converter (31), and a connecting flange (35) is fixedly connected to an interface at one end of the air intake pipe (34) away from the catalytic converter (31). A plurality of heat dissipation grooves (33) are formed at equal angles on an annular outer wall of the catalytic converter (31).

2. The explosion-proof exhaust pipe for a diesel engine according to claim 1, characterized in that: The explosion-proof exhaust pipe (11), the air intake cover (14), the explosion-proof exhaust pipe (11) and the air outlet guide cover (16) are all made of high temperature resistant materials.

3. The explosion-proof exhaust pipe for a diesel engine according to claim 1, characterized in that: The inner wall of the silencer groove (12) is provided with a silencer spiral (13), and an opening at one end of the air outlet guide cover (16) is arranged in a slanted downward shape.

4. The explosion-proof exhaust pipe for a diesel engine according to claim 1, characterized in that: The installation mechanism (2) comprises two elastic pipe clamps (21) symmetrically arranged on the outside of the explosion-proof exhaust pipe (11).

5. The explosion-proof exhaust pipe for a diesel engine according to claim 4, characterized in that: The inner side wall of the elastic pipe clamp (21) is fixedly connected with a plurality of shock-absorbing rubber blocks (22) in an arc-shaped and equiangular shape, and the plurality of shock-absorbing rubber blocks (22) are attached to the outer wall of the explosion-proof exhaust pipe (11).

6. The explosion-proof exhaust pipe for a diesel engine according to claim 4, characterized in that: A connecting piece (23) is fixedly connected to each of the front and rear side walls at the bottom notch of the elastic pipe clamp (21); a through hole is provided between the center positions of the front and rear side walls of the connecting piece (23); and the same bolt (24) is fixedly installed in the two through holes arranged in a front-to-back symmetrical shape.

7. The explosion-proof exhaust pipe for a diesel engine according to claim 4, characterized in that: A connecting rod (25) is fixedly connected to the center of the outer side wall of the top of the elastic pipe clamp (21); a mounting seat (27) is fixedly connected to the top wall of the connecting rod (25); a plurality of shock-absorbing rubber strips (28) are fixedly connected to the top wall of the mounting seat (27) at equal intervals from front to back; a reinforcement block (26) is fixedly connected to each of the front and rear ends below the connecting rod (25); and the bottom wall of the reinforcement block (26) is fixedly connected to the elastic pipe clamp (21).

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