Exhaust system of methanol hybrid wide-body vehicle

Abstract

The utility model relates to an exhaust system of a methanol hybrid wide-body vehicle, and relates to the technical field of mining wide-body vehicles, the exhaust system comprises a three-way valve, the three-way valve is installed on a wide-body vehicle body, and the three-way valve is communicated with an upper pipe; the straight pipe is communicated with the three-way valve; the exhaust pipe communicates with the end, away from the three-way valve, of the straight pipe; and the corrugated pipe communicates with the end, away from the straight pipe, of the exhaust pipe, and the corrugated pipe can stretch out and draw back in the axis direction. The structure of the wide-body vehicle exhaust system is simplified, and the weight of the wide-body vehicle exhaust system is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine wide-body vehicles, in particular to an exhaust system of a methanol hybrid wide-body vehicle. BACKGROUND

[0002] A mine wide-body vehicle is a vehicle specially used for mining transportation, and its main purpose is to transport materials such as ore, coal, and waste rock in a mining area. The mine wide-body vehicle has the advantages of large loading capacity and high transportation efficiency, and is widely used in the transportation operation of underground mines and open-pit mines. The mine wide-body vehicle is usually used in combination with other equipment such as mine cars and conveyors in the transportation system of the mine to achieve efficient transportation of materials. During transportation, the mine wide-body vehicle needs to go through many links such as loading, transportation, and unloading, and therefore needs to have good durability and reliability. At the same time, the mine wide-body vehicle also needs to have good safety performance to ensure safety during transportation.

[0003] The exhaust system of the wide-body vehicle usually adopts more pipelines and more complex structures, which will increase the weight of the vehicle. The increase in the weight of the vehicle will reduce fuel economy, and more energy is needed to maintain the stability of the vehicle when driving at high speed.

[0004] With regard to the related technology in the above, the current wide-body vehicle exhaust system has the problems of complex structure, large weight, and affecting the stability and economy of the wide-body vehicle. CONTENT OF THE INVENTION

[0005] In order to simplify the structure of the wide-body vehicle exhaust system and reduce the weight of the wide-body vehicle exhaust system, the present application provides an exhaust system of a methanol hybrid wide-body vehicle.

[0006] The exhaust system of the methanol hybrid wide-body vehicle provided by the present application adopts the following technical solution:

[0007] An exhaust system of a methanol hybrid wide-body vehicle, comprising:

[0008] A three-way valve is installed on the body of the wide-body vehicle, and an upper pipe is connected to the three-way valve;

[0009] A straight pipe is connected to the three-way valve;

[0010] An exhaust pipe is connected to one end of the straight pipe away from the three-way valve;

[0011] A corrugated pipe is connected to one end of the exhaust pipe away from the straight pipe, and the corrugated pipe can be stretched and contracted in the axial direction.

[0012] By adopting the technical scheme, the three-way valve is adjusted, the upper pipe is communicated with the straight pipe, the exhaust gas generated by the wide-body vehicle is discharged to the large box through the corrugated pipe, the exhaust pipe, the straight pipe, the three-way valve and the upper pipe, the large box is heated by the heat energy of the exhaust gas, after heating, the soil will not stick to the bottom of the large box, and the unloading is very clean, and there is no residual soil, and the goods are unloaded at one time. This can also reduce the unloading time, improve the work efficiency, reduce the construction period and reduce the use cost. The three-way valve is used to control the exhaust system pipeline, the structure of the exhaust system of the wide-body vehicle is simplified, and the weight of the exhaust system of the wide-body vehicle is reduced.

[0013] Optionally, the three-way valve comprises:

[0014] The bottom plate is fixedly installed on the wide-body vehicle body;

[0015] The cavity is fixedly installed on the bottom plate, the upper interface, the lower interface and the side interface are arranged on the cavity and communicated with the cavity, the upper interface and the lower interface are coaxially arranged, the side interface is perpendicular to the upper interface, the upper pipe is communicated with the upper interface, and the straight pipe is communicated with the side interface.

[0016] The baffle is rotatably installed in the cavity, and the baffle has a first state of abutting against the upper interface and a second state of abutting against the lower interface.

[0017] The adjusting handle is rotatably installed on the cavity, and the adjusting handle is fixedly connected with the baffle.

[0018] By adopting the technical scheme, when the exhaust gas needs to be discharged into the air, the adjusting handle is rotated to drive the baffle to rotate in the cavity, so that the baffle abuts against the upper interface, the baffle closes the upper interface, the straight pipe is communicated with the tail pipe through the three-way valve, when the large box needs to be heated, the adjusting handle is rotated to drive the baffle to rotate in the cavity, so that the baffle abuts against the lower interface, the baffle closes the lower interface, the upper pipe is communicated with the straight pipe, and then the screw rod is rotated to be screw-connected in the lower fixed point. The three-way valve is used to realize rapid switching of the pipeline.

[0019] Optionally, the three-way valve further comprises:

[0020] The upper fixed point is fixedly installed on the cavity;

[0021] The lower fixed point is fixedly installed on the cavity;

[0022] The screw rod is arranged and screw-connected on the adjusting handle, and the screw rod can be screw-connected on the upper fixed point and the lower fixed point.

[0023] By adopting the technical scheme, the screw is screwed into the upper fixed point by rotating the screw, so that the structural stability and the sealing property of the three-way valve are improved.

[0024] Optionally, a sealing gasket is fixedly installed in the upper interface, the lower interface and the side interface.

[0025] By adopting the technical scheme, the connection and sealing property of the upper interface, the lower interface and the side interface are improved.

[0026] Optionally, the three-way valve further comprises:

[0027] A buffer joint is installed at one end of the upper pipe away from the three-way valve.

[0028] A large tank flange is connected with the buffer joint.

[0029] By adopting the technical scheme, the exhaust gas is conveniently discharged to the large tank, and the connection and sealing property of the large tank and the exhaust system of the methanol hybrid wide-body vehicle are improved.

[0030] Optionally, the buffer joint comprises:

[0031] A buffer connecting pipe is in communication with one end of the upper pipe away from the three-way valve, and the large tank flange is fixedly installed on the buffer connecting pipe.

[0032] A sliding block is sleeved on the buffer connecting pipe, and is slidingly installed on the buffer connecting pipe, and the sliding block abuts against the large tank flange.

[0033] A limiting block is sleeved and fixedly installed on the buffer connecting pipe.

[0034] A spring is sleeved on the buffer connecting pipe, one end of the spring is fixedly connected with the sliding block, and the other end of the spring is fixedly connected with the limiting block.

[0035] A flange surface is fixedly installed on one end of the buffer connecting pipe close to the upper pipe.

[0036] By adopting the technical scheme, when the large tank shakes, the sliding block slides on the buffer connecting pipe, and the spring is stretched and contracted to achieve the buffering effect on the large tank, so that the structural stability of the exhaust system of the methanol hybrid wide-body vehicle is improved.

[0037] Optionally, the three-way valve further comprises:

[0038] A processor is in communication with the lower interface.

[0039] A tail pipe is in communication with the processor.

[0040] By adopting the technical scheme, when the tail gas needs to be discharged into the air, the three-way valve is adjusted to make the straight pipe and the tail pipe communicate through the three-way valve, and the tail gas generated by the wide-body vehicle is discharged through the tail pipe, so that the tail gas is discharged.

[0041] Optionally, a U-shaped bolt is sleeved and fixedly installed on the upper pipe and the corrugated pipe, and the U-shaped bolt is fixedly installed on the support.

[0042] By adopting the technical scheme, the installation stability of the upper pipe and the corrugated pipe is improved, and the structural stability of the exhaust system of the methanol hybrid wide-body vehicle is improved.

[0043] Optionally, a steel band is sleeved and fixedly installed on the processor, and the steel band is fixedly connected with the limiting plate.

[0044] By adopting the technical scheme, the installation stability of the processor is improved, and the structural stability of the exhaust system of the methanol hybrid wide-body vehicle is improved.

[0045] Optionally, a V-shaped clamp is sleeved and fixedly installed at the communication position between the corrugated pipe and the exhaust pipe;

[0046] A V-shaped clamp is sleeved and fixedly installed at the communication position between the upper pipe and the buffer connecting pipe;

[0047] A V-shaped clamp is sleeved and fixedly installed at the communication position between the upper pipe and the upper interface;

[0048] A V-shaped clamp is sleeved and fixedly installed at the communication position between the straight pipe and the exhaust pipe;

[0049] A V-shaped clamp is sleeved and fixedly installed at the communication position between the processor and the lower interface.

[0050] By adopting the technical scheme, the connection and sealing property between the corrugated pipe and the exhaust pipe, the upper pipe and the buffer connecting pipe, the upper pipe and the upper interface, the straight pipe and the exhaust pipe, and the processor and the lower interface are improved.

[0051] In summary, the present application has at least one of the following beneficial technical effects:

[0052] 1. Adjust the three-way valve to make the upper pipe and the straight pipe communicate, and the tail gas generated by the wide-body vehicle is discharged to the large box through the corrugated pipe, the exhaust pipe, the straight pipe, the three-way valve and the upper pipe. The heat energy of the tail gas heats the large box, and after heating, the soil will not stick to the bottom of the large box. When unloading, it is very clean and will not leave any soil. The goods are unloaded at one time. This also reduces the unloading time, improves the work efficiency, reduces the construction period and reduces the use cost. The three-way valve is used to control the exhaust system pipeline, the structure of the wide-body vehicle exhaust system is simplified, and the weight of the wide-body vehicle exhaust system is reduced.

[0053] 2. When the exhaust gas needs to be discharged into the air, the shift handle is rotated to drive the baffle to rotate in the cavity, so that the baffle abuts against the upper interface, the baffle closes the upper interface, the straight pipe and the tail pipe are communicated through the three-way valve, when the large box needs to be heated, the shift handle is rotated to drive the baffle to rotate in the cavity, so that the baffle abuts against the lower interface, the baffle closes the lower interface, the upper pipe and the straight pipe are communicated, and then the screw rod is rotated, so that the screw rod is screw-connected in the lower fixed point. The three-way valve is used for realizing rapid switching of the pipeline;

[0054] 3. When the large box shakes, the sliding block slides on the buffer connecting pipe, buffer effect of the large box is realized through spring expansion and contraction, and the structural stability of the exhaust system of the methanol hybrid wide-body vehicle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is a structural schematic diagram of the embodiment of the application;

[0056] Figure 2 is a structural schematic diagram for showing the three-way valve;

[0057] Figure 3 is a structural schematic diagram for showing the inside of the three-way valve;

[0058] Figure 4 is a structural schematic diagram for showing the buffer joint.

[0059] BRIEF DESCRIPTION OF DRAWINGS

[0060] 1. Three-way valve; 101, bottom plate; 102, cavity; 1021, upper interface; 1022, lower interface; 1023, side interface; 103, baffle; 104, shift handle; 105, upper fixed point; 106, lower fixed point; 107, screw rod; 2, upper pipe; 3, straight pipe; 4, exhaust pipe; 5, corrugated pipe; 6, buffer joint; 601, buffer connecting pipe; 602, sliding block; 603, limiting block; 604, spring; 605, flange face; 7, large box flange; 8, processor; 9, tail pipe; 10, U-shaped bolt; 11, support; 12, steel belt; 13, limiting plate; 14, V-shaped clamp. DETAILED DESCRIPTION

[0061] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0062] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0063] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0064] The following will be described in detail in combination with the drawings Figures 1-4 The application is further described in detail.

[0065] The application discloses a methanol hybrid wide-body vehicle exhaust system.

[0066] Referring to Figure 1 The exhaust system of the methanol hybrid wide-body vehicle comprises a three-way valve 1, a straight pipe 3, an exhaust pipe 4, a corrugated pipe 5, a processor 8, a tail pipe 9, a buffer joint 6 and a large box flange 7.

[0067] The three-way valve 1 is mounted on the wide-body vehicle body, and the upper pipe 2 is communicated with the three-way valve 1. The straight pipe 3 is communicated with the three-way valve 1. The exhaust pipe 4 is communicated with the end of the straight pipe 3 away from the three-way valve 1, and the V-shaped clamp 14 is sleeved and fixedly installed at the communication position of the straight pipe 3 and the exhaust pipe 4. The corrugated pipe 5 is communicated with the end of the exhaust pipe 4 away from the straight pipe 3, and the V-shaped clamp 14 is sleeved and fixedly installed at the communication position of the corrugated pipe 5 and the exhaust pipe 4, and the corrugated pipe 5 can be stretched and contracted in the axial direction. The U-shaped bolt 10 is sleeved and fixedly installed on the upper pipe 2 and the corrugated pipe 5, and the U-shaped bolt 10 is fixedly installed on the bracket 11. The buffer joint 6 is installed at the end of the upper pipe 2 away from the three-way valve 1. The large box flange 7 is connected with the buffer joint 6.

[0068] When the exhaust gas needs to be discharged into the air, the three-way valve 1 is adjusted so that the straight pipe 3 and the tail pipe 9 are communicated through the three-way valve 1, and the exhaust gas generated by the wide-body vehicle is discharged through the corrugated pipe 5, the exhaust pipe 4, the straight pipe 3, the three-way valve 1, and the processor 8, and finally through the tail pipe 9, realizing the exhaust gas discharge work. When the large box needs to be heated, the three-way valve 1 is adjusted so that the upper pipe 2 and the straight pipe 3 are communicated, and the exhaust gas generated by the wide-body vehicle is discharged through the corrugated pipe 5, the exhaust pipe 4, the straight pipe 3, the three-way valve 1, the upper pipe 2, and the shock joint to the large box, and the heat energy of the exhaust gas is used to heat the large box. After heating, the soil will not stick to the bottom of the large box, and the unloading will be very clean and will not leave any soil. The goods are unloaded in one step. This can also reduce the unloading time, improve the work efficiency, reduce the construction period, and reduce the use cost. The three-way valve 1 realizes the control of the exhaust system pipeline, simplifies the structure of the wide-body vehicle exhaust system, and reduces the weight of the wide-body vehicle exhaust system.

[0069] Referring to Figure 1 , Figure 2 and Figure 3 , the three-way valve 1 includes a bottom plate 101, a cavity 102, a baffle 103, an adjusting handle 104, an upper fixed point 105, a lower fixed point 106, and a screw rod 107. The bottom plate 101 is fixedly installed on the wide-body vehicle body. The cavity 102 is fixedly installed on the bottom plate 101, and the cavity 102 is provided with an upper interface 1021, a lower interface 1022, and a side interface 1023, which are communicated with the cavity 102. The upper interface 1021 and the lower interface 1022 are coaxially arranged, and the axis of the side interface 1023 is perpendicular to the axis of the upper interface 1021. The upper pipe 2 is communicated with the upper interface 1021, and the V-shaped clamp 14 is sleeved and fixedly installed at the communication position of the upper pipe 2 and the upper interface 1021. The straight pipe 3 is communicated with the side interface 1023. The baffle 103 is rotatably installed in the cavity 102, and the baffle 103 has a first state of abutting against the upper interface 1021 and a second state of abutting against the lower interface 1022. The adjusting handle 104 is rotatably installed on the cavity 102, and the adjusting handle 104 is fixedly connected with the baffle 103. The upper fixed point 105 is fixedly installed on the cavity 102. The lower fixed point 106 is fixedly installed on the cavity 102. The screw rod 107 is threadedly connected with the adjusting handle 104, and the screw rod 107 can be threadedly connected with the upper fixed point 105 and the lower fixed point 106. The sealing gaskets are fixedly installed in the upper interface 1021, the lower interface 1022, and the side interface 1023.

[0070] When it is needed to exhaust the exhaust gas into the air, the shift lever 104 is rotated to drive the baffle 103 to rotate in the cavity 102, so that the baffle 103 abuts against the upper interface 1021, the baffle 103 closes the upper interface 1021, the straight pipe 3 and the tail pipe 9 are communicated through the three-way valve 1, then the screw rod 107 is rotated to be screwed in the upper fixed point 105, so as to improve the structural stability and sealing property of the three-way valve 1. When it is needed to heat the large box, the shift lever 104 is rotated to drive the baffle 103 to rotate in the cavity 102, so that the baffle 103 abuts against the lower interface 1022, the baffle 103 closes the lower interface 1022, the upper pipe 2 and the straight pipe 3 are communicated, then the screw rod 107 is rotated to be screwed in the lower fixed point 106. The three-way valve 1 is used to realize the quick switching of the pipeline.

[0071] The processor 8 is communicated with the lower interface 1022, the V-shaped clamp 14 is sleeved and fixedly installed at the communicated position of the processor 8 and the lower interface 1022, and the tail pipe 9 is communicated with the processor 8. The steel belt 12 is sleeved and fixedly installed on the processor 8, and the limiting plate 13 is fixedly connected to the steel belt 12.

[0072] Referring to Figure 1 and Figure 4 The buffer joint 6 comprises a buffer connecting pipe 601, a sliding block 602, a limiting block 603, a spring 604 and a flange face 605. The buffer connecting pipe 601 is communicated with the end of the upper pipe 2 away from the three-way valve 1, the V-shaped clamp 14 is sleeved and fixedly installed at the communicated position of the upper pipe 2 and the buffer connecting pipe 601, and the large box flange head 7 is fixedly installed on the buffer connecting pipe 601. The sliding block 602 is sleeved on the buffer connecting pipe 601 and is slidingly installed on the buffer connecting pipe 601, and the sliding block 602 abuts against the large box flange head 7. The limiting block 603 is sleeved and fixedly installed on the buffer connecting pipe 601. The spring 604 is sleeved on the buffer connecting pipe 601, one end of the spring 604 is fixedly connected to the sliding block 602, and the other end of the spring 604 is fixedly connected to the limiting block 603. The flange face 605 is fixedly installed on the end of the buffer connecting pipe 601 close to the upper pipe 2.

[0073] When the large box shakes, the sliding block 602 slides on the buffer connecting pipe 601, and the spring 604 is stretched and contracted to realize the buffering effect on the large box, so as to improve the structural stability of the exhaust system of the methanol hybrid wide-body vehicle.

[0074] The implementation principle of the exhaust system of the methanol hybrid wide-body vehicle is as follows: when exhaust gas needs to be discharged into the air, the three-way valve 1 is adjusted to make the straight pipe 3 and the tail pipe 9 communicate through the three-way valve 1, and the exhaust gas generated by the wide-body vehicle is discharged through the corrugated pipe 5, the exhaust pipe 4, the straight pipe 3, the three-way valve 1 and the processor 8, and finally through the tail pipe 9, so that the exhaust gas is discharged. When the large box needs to be heated, the three-way valve 1 is adjusted to make the upper pipe 2 and the straight pipe 3 communicate, and the exhaust gas generated by the wide-body vehicle is discharged through the corrugated pipe 5, the exhaust pipe 4, the straight pipe 3, the three-way valve 1, the upper pipe 2 and the shock joint, so that the large box is heated by the heat energy of the exhaust gas. After heating, the soil will not stick to the bottom of the large box, and the unloading is very clean and will not leave any soil. The goods are unloaded at one time. In this way, the unloading time is reduced, the work efficiency is improved, the construction period is reduced, and the use cost is reduced. The three-way valve 1 is used to control the exhaust system pipeline, the structure of the exhaust system of the wide-body vehicle is simplified, and the weight of the exhaust system of the wide-body vehicle is reduced.

[0075] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An exhaust system for a methanol hybrid wide-body vehicle, characterized in that, include: Three-way valve (1), the three-way valve (1) is installed on the body of the wide-body vehicle, and the three-way valve (1) is connected to an upper pipe (2). Straight pipe (3), which is connected to the three-way valve (1); Exhaust pipe (4), the exhaust pipe (4) is connected to the end of the straight pipe (3) away from the three-way valve (1); The bellows (5) is connected to the end of the exhaust pipe (4) away from the straight pipe (3), and the bellows (5) is capable of extending and retracting in the axial direction.

2. The exhaust system of the methanol hybrid wide-body vehicle according to claim 1, characterized in that, The three-way valve (1) includes: A base plate (101) is fixedly installed on the body of the wide-body vehicle; A cavity (102) is fixedly installed on the base plate (101). The cavity (102) is provided with an upper interface (1021), a lower interface (1022), and a side interface (1023). The upper interface (1021), the lower interface (1022), and the side interface (1023) are all connected to the cavity (102). The upper interface (1021) and the lower interface (1022) are coaxially arranged. The axis of the side interface (1023) is perpendicular to the axis of the upper interface (1021). The upper tube (2) is connected to the upper interface (1021), and the straight tube (3) is connected to the side interface (1023). A baffle (103) is rotatably installed inside the cavity (102). The baffle (103) has a first state of contacting the upper interface (1021) and a second state of contacting the lower interface (1022). The gear shift lever (104) is rotatably mounted on the cavity (102) and is fixedly connected to the baffle (103).

3. The exhaust system of the methanol hybrid wide-body vehicle according to claim 2, characterized in that, The three-way valve (1) also includes: Upper fixing point (105), the upper fixing point (105) is fixedly installed on the cavity (102); The lower fixing point (106) is fixedly installed on the cavity (102); A screw (107) is threaded through and connected to the gear shift handle (104), and the screw (107) can be threaded to the upper fixing point (105) and the lower fixing point (106).

4. The exhaust system of the methanol hybrid wide-body vehicle according to claim 2, characterized in that, Sealing gaskets are fixedly installed inside the upper interface (1021), the lower interface (1022), and the side interface (1023).

5. The exhaust system of the methanol hybrid wide-body vehicle according to claim 4, characterized in that, Also includes: A buffer connector (6) is installed at the end of the upper pipe (2) away from the three-way valve (1); Large box flange (7), which is connected to the buffer joint (6).

6. The exhaust system of the methanol hybrid wide-body vehicle according to claim 5, characterized in that, The buffer connector (6) includes: Buffer connector (601) is connected to the end of the upper pipe (2) away from the three-way valve (1), and the large box flange (7) is fixedly installed on the buffer connector (601); The slider (602) is sleeved on the buffer tube (601), the slider (602) is slidably installed on the buffer tube (601), and the slider (602) abuts against the large box flange (7); A limiting block (603) is sleeved and fixedly installed on the buffer tube (601); A spring (604) is sleeved on the buffer tube (601), one end of the spring (604) is fixedly connected to the slider (602), and the other end of the spring (604) is fixedly connected to the limiting block (603); Flange face (605), which is fixedly installed on the end of the buffer pipe (601) near the upper pipe (2).

7. The exhaust system of the methanol hybrid wide-body vehicle according to claim 6, characterized in that, Also includes: Processor (8), which is connected to the lower interface (1022); Tail tube (9), which is connected to the processor (8).

8. The exhaust system of the methanol hybrid wide-body vehicle according to claim 1, characterized in that, U-bolts (10) are fitted and fixedly installed on both the upper pipe (2) and the corrugated pipe (5), and the U-bolts (10) are fixedly installed on the bracket (11).

9. The exhaust system of the methanol hybrid wide-body vehicle according to claim 7, characterized in that, A steel strip (12) is sleeved and fixedly installed on the processor (8), and the steel strip (12) is fixedly connected to a limit plate (13).

10. The exhaust system of the methanol hybrid wide-body vehicle according to claim 7, characterized in that, A V-shaped clamp (14) is fitted and fixedly installed at the connection between the corrugated pipe (5) and the exhaust pipe (4). A V-shaped clamp (14) is fitted and fixedly installed at the connection between the upper pipe (2) and the buffer pipe (601). A V-shaped clamp (14) is sleeved and fixedly installed at the connection between the upper pipe (2) and the upper interface (1021). A V-shaped clamp (14) is fitted and fixedly installed at the connection between the straight pipe (3) and the exhaust pipe (4). A V-shaped clamp (14) is fitted and fixedly installed at the connection between the processor (8) and the lower interface (1022).

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