Motor vehicle exhaust aftertreatment equipment

Abstract

The utility model relates to the technical field of exhaust aftertreatment equipment, in particular to motor vehicle exhaust aftertreatment equipment which comprises a shell, the left end of the shell is fixedly connected with the right end of an air inlet, the left end of the air inlet is in threaded connection with the right end of an air inlet pipe, and the right end of the shell is fixedly connected with the left end of an exhaust port. The right end of the exhaust port is in threaded connection with the left end of an exhaust pipe, the surface of the shell makes contact with the surface of a front fixing frame, an upper threaded hole is formed in the upper surface of the front fixing frame, the surface of the upper threaded hole is in threaded connection with the surface of an upper fixing bolt, and the surface of the upper fixing bolt is in threaded connection with the surface of an upper fixing nut. The surface of the upper fixing bolt makes contact with the surface of the front fixing frame, and a lower threaded hole is formed in the lower end of the front fixing frame. The motor vehicle exhaust aftertreatment equipment is simple in structure, the convenience of mounting and dismounting of the equipment is improved, and the convenience of the device in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust gas post-processing equipment, in particular to exhaust gas post-processing equipment for motor vehicles. Background Art

[0002] Exhaust aftertreatment refers to the method of adding exhaust purification equipment to the exhaust system of internal combustion engines on trucks and lorries to reduce the content of harmful components in the exhaust. It can oxidize harmful carbon monoxide and unburned hydrocarbons into harmless carbon dioxide and water vapor, reduce nitrogen oxides into nitrogen to reduce the concentration of nitrogen oxides in the exhaust, and capture soot particles and burn them out.

[0003] The existing exhaust after-treatment equipment has a complex structure and is difficult to disassemble. During the long-term exhaust after-treatment process of motor vehicles, the exhaust after-treatment system gradually becomes blocked and fails due to the influence of residual particulate matter, carbon deposits and urea crystals in the exhaust gas treatment. The high exhaust temperature will lead to aging of the exhaust equipment, and the exhaust after-treatment equipment needs to be disassembled. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to provide a motor vehicle exhaust aftertreatment device to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: comprising a shell, the left end of the shell is fixedly connected to the right end of the air inlet, the left end of the air inlet is threadedly connected to the right end of the air inlet pipe, the right end of the shell is fixedly connected to the left end of the exhaust port, the right end of the exhaust port is threadedly connected to the left end of the exhaust pipe, the surface of the shell contacts the surface of the front fixing frame, the upper surface of the front fixing frame is provided with an upper threaded hole, the surface of the upper threaded hole is threadedly connected to the surface of an upper fixing bolt, the surface of the upper fixing bolt is threadedly connected to the surface of an upper fixing nut, the surface of the upper fixing bolt contacts the surface of the front fixing frame, the lower end of the front fixing frame is provided with a lower threaded hole, and the lower The surface of the threaded hole is threadedly connected to the surface of the lower fixing bolt, the surface of the lower fixing bolt is threadedly connected to the surface of the lower fixing nut, the surface of the lower fixing nut contacts the surface of the front fixing frame, the surface of the lower fixing bolt contacts the lower end surface of the rear fixing frame, the lower end surface of the front fixing frame contacts the lower end surface of the rear fixing frame, the surface of the rear fixing frame contacts the surface of the shell, the inner surface of the shell is fixedly connected to the surface of the thermal insulation layer, the left end of the thermal insulation layer is fixedly connected to the right end of the air intake port, the right end of the thermal insulation layer is fixedly connected to the left end of the exhaust port, the inner surface of the thermal insulation layer contacts the surface of the gasket, and the surface of the gasket contacts the surface of the catalyst carrier.

[0008] Preferably, the air inlet is located on the left side of the shell, the air inlet pipe is located on the left side of the shell, and threads are provided inside both ends of the air inlet pipe.

[0009] Preferably, the exhaust port is located on the right side of the shell, the exhaust pipe is located on the right side of the shell, and the surface of the exhaust port is provided with threads.

[0010] Preferably, the upper threaded hole is located on the upper surface of the shell, and the upper fixing bolt is located on the upper surface of the shell.

[0011] Preferably, the lower threaded hole is located below the shell, and the lower fixing bolt is located below the shell.

[0012] Preferably, the heat insulation layer is located on the left side of the exhaust pipe, the gasket is located on the left side of the exhaust pipe, and threads are provided inside both ends of the exhaust pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The motor vehicle exhaust aftertreatment device has a left end of a shell fixedly connected to a right end of an air inlet, a left end of an air inlet threadedly connected to a right end of an air inlet pipe, a right end of a shell fixedly connected to a left end of an exhaust port, and a right end of an exhaust port threadedly connected to a left end of an exhaust pipe, thereby improving the convenience of installation and disassembly of the device;

[0015] 2. The motor vehicle exhaust after-treatment device has an upper threaded hole on its upper surface, the surface of the upper threaded hole is threadedly connected to the surface of the upper fixing bolt, the surface of the upper fixing bolt is threadedly connected to the surface of the upper fixing nut, and the surface of the upper fixing bolt contacts the surface of the front fixing frame, which increases the convenience of the device when used;

[0016] 3. The motor vehicle exhaust aftertreatment device has a simple structure, which improves the convenience of installation and disassembly of the device and increases the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the front view structure of the housing of the utility model;

[0019] Figure 3 This is a front view of the structure of the catalyst carrier of the utility model;

[0020] Figure 4 For this utility model Figure 1 A magnified schematic diagram of part A in FIG.

[0021] In the figure: 1. shell; 2. air inlet; 3. air inlet pipe; 4. exhaust port; 5. exhaust pipe; 6. front fixing bracket; 7. upper threaded hole; 8. upper fixing bolt; 9. upper fixing nut; 10. lower threaded hole; 11. lower fixing bolt; 12. lower fixing nut; 13. rear fixing bracket; 14. thermal insulation layer; 15. gasket; 16. catalyst carrier. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 The utility model provides a technical solution: it includes a shell 1, the left end of the shell 1 is fixedly connected to the right end of the air inlet 2, the left end of the air inlet 2 is threadedly connected to the right end of the air inlet pipe 3, the right end of the shell 1 is fixedly connected to the left end of the exhaust port 4, the right end of the exhaust port 4 is threadedly connected to the left end of the exhaust pipe 5, the surface of the shell 1 contacts the surface of the front fixing frame 6, the upper surface of the front fixing frame 6 is provided with an upper threaded hole 7, the surface of the upper threaded hole 7 is threadedly connected to the surface of the upper fixing bolt 8, the surface of the upper fixing bolt 8 is threadedly connected to the surface of the upper fixing nut 9, the surface of the upper fixing bolt 8 contacts the surface of the front fixing frame 6, the lower end of the front fixing frame 6 is provided with a lower threaded hole 10, the surface of the lower threaded hole 10 is threadedly connected to the lower fixing The surface of the bolt 11 is threadedly connected, the surface of the lower fixing bolt 11 is threadedly connected to the surface of the lower fixing nut 12, the surface of the lower fixing nut 12 contacts the surface of the front fixing frame 6, the surface of the lower fixing bolt 11 contacts the lower end surface of the rear fixing frame 13, the lower end surface of the front fixing frame 6 contacts the lower end surface of the rear fixing frame 13, the surface of the rear fixing frame 13 contacts the surface of the shell 1, the inner surface of the shell 1 is fixedly connected to the surface of the heat insulation layer 14, the left end of the heat insulation layer 14 is fixedly connected to the right end of the air intake port 2, the right end of the heat insulation layer 14 is fixedly connected to the left end of the exhaust port 4, the inner surface of the heat insulation layer 14 contacts the surface of the gasket 15, and the surface of the gasket 15 contacts the surface of the catalyst carrier 16.

[0024] The air inlet 2 is located on the left side of the housing 1 , and the air inlet pipe 3 is located on the left side of the housing 1 . Threads are arranged inside both ends of the air inlet pipe 3 .

[0025] The exhaust port 4 is located on the right side of the housing 1 , the exhaust pipe 5 is located on the right side of the housing 1 , and the surface of the exhaust port 4 is provided with threads.

[0026] The upper threaded hole 7 is located on the upper surface of the housing 1 , and the upper fixing bolt 8 is located on the upper surface of the housing 1 .

[0027] The lower threaded hole 10 is located at the bottom of the housing 1 , and the lower fixing bolt 11 is located at the bottom of the housing 1 .

[0028] The heat insulation layer 14 is located on the left side of the exhaust pipe 5, the gasket 15 is located on the left side of the exhaust pipe 5, and threads are arranged inside both ends of the exhaust pipe 5. The motor vehicle exhaust after-treatment device has a simple structure, improves the convenience of installation and disassembly of the device, and increases the convenience of using the device.

[0029] Working principle: The front fixing frame 6 and the rear fixing frame 13 are fixed to the surface of the shell 1 by the lower fixing bolt 11 and the lower fixing nut 12, the left end of the shell 1 is fixedly connected to the right end of the air inlet 2, the left end of the air inlet 2 is threadedly connected to the right end of the air inlet pipe 3, the gas enters the air inlet 2 through the air inlet pipe 3, the gas enters the interior of the shell 1 through the air inlet 2, the gas reacts through the catalyst carrier 16, the right end of the shell 1 is fixedly connected to the left end of the exhaust port 4, the right end of the exhaust port 4 is threadedly connected to the left end of the exhaust pipe 5, and the reacted gas is discharged through the exhaust port 4 and the exhaust pipe 5.

[0030] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A motor vehicle exhaust aftertreatment device, comprising a housing (1), characterized in that: The left end of the shell (1) is fixedly connected to the right end of the air inlet (2), the left end of the air inlet (2) is threadedly connected to the right end of the air inlet pipe (3), the right end of the shell (1) is fixedly connected to the left end of the exhaust port (4), the right end of the exhaust port (4) is threadedly connected to the left end of the exhaust pipe (5), the surface of the shell (1) contacts the surface of the front fixing frame (6), the upper surface of the front fixing frame (6) is provided with an upper threaded hole (7), the surface of the upper threaded hole (7) is threadedly connected to the surface of an upper fixing bolt (8), the surface of the upper fixing bolt (8) is threadedly connected to the surface of an upper fixing nut (9), the surface of the upper fixing bolt (8) contacts the surface of the front fixing frame (6), the lower end of the front fixing frame (6) is provided with a lower threaded hole (10), the surface of the lower threaded hole (10) is threadedly connected to the surface of a lower fixing bolt (11), and the surface of the lower fixing bolt (11) is threadedly connected to the surface of a lower fixing nut (12).

2. The exhaust aftertreatment device for a motor vehicle according to claim 1, characterized in that: The air inlet (2) is located on the left side of the shell (1), the air inlet pipe (3) is located on the left side of the shell (1), the inner surface of the shell (1) is fixedly connected to the surface of the heat insulation layer (14), the left end of the heat insulation layer (14) is fixedly connected to the right end of the air inlet (2), the right end of the heat insulation layer (14) is fixedly connected to the left end of the exhaust port (4), the inner surface of the heat insulation layer (14) is in contact with the surface of the gasket (15), and the surface of the gasket (15) is in contact with the surface of the catalyst carrier (16).

3. The exhaust aftertreatment device for a motor vehicle according to claim 2, characterized in that: The exhaust port (4) is located on the right side of the shell (1), the exhaust pipe (5) is located on the right side of the shell (1), the surface of the lower fixing nut (12) contacts the surface of the front fixing frame (6), the surface of the lower fixing bolt (11) contacts the lower end surface of the rear fixing frame (13), the lower end surface of the front fixing frame (6) contacts the lower end surface of the rear fixing frame (13), and the surface of the rear fixing frame (13) contacts the surface of the shell (1).

4. The exhaust aftertreatment device for a motor vehicle according to claim 3, characterized in that: The upper threaded hole (7) is located on the upper surface of the housing (1), and the upper fixing bolt (8) is located on the upper surface of the housing (1).

5. The exhaust aftertreatment device for a motor vehicle according to claim 4, characterized in that: The lower threaded hole (10) is located below the housing (1), and the lower fixing bolt (11) is located below the housing (1).

6. The exhaust aftertreatment device for a motor vehicle according to claim 5, characterized in that: The heat insulation layer (14) is located on the left side of the exhaust port (4), and the liner (15) is located on the left side of the exhaust port (4).

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