Heat insulation structure of detachable V-shaped hoop for tail gas aftertreatment

Abstract

The utility model belongs to the technical field of aftertreatment, and particularly relates to a heat insulation structure of a detachable V-shaped hoop for tail gas aftertreatment. The heat insulation structure comprises a first heat insulation cover and a second heat insulation cover, one ends of the first heat insulation cover and the second heat insulation cover are connected through a connecting shaft, and the other ends are movably connected through a support and a buckle. Heat insulation pasting cotton is pasted on the inner sides of the first heat insulation cover and the second heat insulation cover. The whole heat shield is of a metal ring structure, and the requirements for strength and attractiveness are met; a connecting shaft and a buckle are arranged, so that the V-shaped hoop is convenient to mount and dismount; the bolt avoiding cover is arranged and can be matched with a post-processed V-shaped hoop; cotton is attached to the inner layer, and the heat insulation performance is enhanced; the heat insulation problem of the V-shaped hoop of an existing post-treatment product can be solved, the advantages of being good in durability, attractive in appearance and the like are achieved, and meanwhile the cost and detachability of the hoop heat insulation cover can be considered.

Description

A heat insulation structure with a detachable V-shaped clamp for exhaust gas aftertreatment. Technical Field

[0001] This utility model belongs to the field of after-treatment technology, specifically relating to a heat insulation structure of a detachable V-shaped clamp for exhaust gas after-treatment. Background Technology

[0002] The temperature of automotive aftertreatment products during operation is affected by engine conditions and chemical reactions. The highest temperature of aftertreatment products may reach 600℃ to 800℃ (regeneration conditions). In order to prevent the high surface temperature from affecting the surrounding components of the aftertreatment, such as wiring harnesses and sensors, and from contact with external flammable materials (such as crop branches and leaves), the industry has generally proposed heat insulation requirements for aftertreatment. Usually, this temperature requirement is below 200℃. To meet the heat insulation requirements, the aftertreatment structure must be equipped with a suitable heat insulation cover.

[0003] Currently, most domestic companies have welded and wrapped metal heat shields with heat insulation cotton around the post-processing packaging products. To ensure the maintainability and replaceability of the modules, the heat shields are usually installed separately for each functional module.

[0004] Because DPF removal requires adding V-shaped clamps between DOC and DPF, and between SCR and DPF, the addition of these clamp seals necessitates breaking the heat shields on the post-treatment surfaces. Furthermore, the heat shields on each functional section surface require some clearance for the clamp structure, as shown in Figure 1. This results in a lack of heat insulation protection on the reserved space and the clamps themselves, potentially causing heat damage to surrounding components. Because temperature radiation is difficult to control at the V-shaped clamps used for DPF removal in existing structures, most post-treatment processes fail to provide heat insulation at the clamp structure and are forced to adopt clearance measures from surrounding structures. A few solutions use flexible fiberglass wool and basalt cloth to protect the clamps, but this method has disadvantages such as poor durability, high cost, easy detachment, and aesthetically unappealing appearance.

[0005] Therefore, it is of great significance to design a heat insulation device at the V-shaped clamp that does not affect the post-processing disassembly structure and is easy to use. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a heat insulation structure for a detachable V-shaped clamp in exhaust gas aftertreatment. This heat insulation cover is suitable for insulating the V-shaped clamps of aftertreatment products and features easy disassembly and maintenance, good durability, and an attractive appearance.

[0007] To achieve the above technical objectives, the technical solution adopted in this utility model embodiment is as follows:

[0008] A heat insulation structure with a detachable V-shaped clamp for exhaust gas aftertreatment includes a first heat insulation cover and a second heat insulation cover. One end of the first heat insulation cover and the second heat insulation cover are connected by a connecting shaft, and the other end is movably connected by a bracket and a buckle.

[0009] The inner sides of the first and second heat insulation covers are provided with heat insulation cotton.

[0010] Furthermore, the bracket and the wrench are respectively mounted on the first heat insulation cover and the second heat insulation cover. The wrench is equipped with a buckle. By adjusting the engagement or disengagement of the buckle with the bracket, the connection between the first heat insulation cover and the second heat insulation cover can be achieved.

[0011] Furthermore, the first heat insulation cover and / or the second heat insulation cover are provided with bolt clearance covers, which are used to avoid the tightening bolts on the V-shaped clamp when the first heat insulation cover and the second heat insulation cover are closed as a whole.

[0012] Furthermore, both the first and second heat insulation covers are made of semi-circular metal and can be assembled to form a complete circle, fitting onto the surface of the V-shaped clamp.

[0013] Furthermore, the cross-section of the first heat insulation cover and the second heat insulation cover is trapezoidal, including a main body and an overlapping part. The overlapping part is located on both sides of the main body, and the overlapping part forms an angle α with the main body, where 100° < α < 150°.

[0014] Furthermore, the free end of the overlapping part is provided with a flange, the overlapping part forms a matching relationship with the V-shaped clamp, and overlaps and fits with the cylindrical heat insulation cover on both sides of the V-shaped clamp through the flange.

[0015] The beneficial effects of the technical solution provided by this utility model embodiment are:

[0016] (1) The heat insulation cover of this utility model can solve the heat insulation problem of the V-shaped clamp of the existing post-processing products. It has the advantages of good durability and beautiful appearance, while taking into account the cost and detachability of the clamp heat insulation cover.

[0017] (2) The heat insulation cover of this utility model is a metal ring structure, which meets the requirements of strength and aesthetics; it is equipped with a connecting shaft and buckle, which facilitates the installation and disassembly of the V-shaped clamp; it is equipped with a bolt avoidance cover, which can be adapted to the V-shaped clamp of the post-processing; the inner layer is equipped with heat insulation cotton, which enhances the heat insulation performance. Attached Figure Description

[0018] Figure 1 is a structural schematic diagram of the V-shaped clamp assembly in the prior art.

[0019] Figure 2 is a front view of the V-shaped clamp assembly in Figure 1.

[0020] Figure 3 is a schematic diagram of the thermal insulation structure in the closed state in an embodiment of this utility model.

[0021] Figure 4 is a front view of the heat insulation structure in the closed state in an embodiment of this utility model.

[0022] Figure 5 is a left view of the heat insulation structure in the closed state in an embodiment of this utility model.

[0023] Figure 6 is a schematic diagram of the heat insulation structure in the open state in an embodiment of this utility model.

[0024] Figure 7 is a main diagram of the heat insulation structure in the open state in an embodiment of this utility model.

[0025] Figure 8 is a schematic diagram of the cross-sectional structure of the first or second heat shield in Figure 1.

[0026] Figure 9 is a schematic diagram of the thermal insulation structure assembly in Figure 3.

[0027] Figure 10 is a front view of the thermal insulation structure assembly in Figure 9.

[0028] Explanation of reference numerals in the attached drawings: 1-First heat insulation cover; 2-Second heat insulation cover; 3-Bolt clearance cover; 4-Connecting shaft; 5-Heat insulation cotton; 6-Bracket; 7-Snap buckle; 8-Wrench; 9-Cylinder heat insulation cover; 10-V-shaped clamp; 12-Main body; 21-Overlapping part; 210-Flanged edge. Detailed Implementation

[0029] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "inner" and "outer", "upper" and "lower", "left" and "right" is usually based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] Example 1

[0032] As shown in Figures 3-7, a heat insulation structure with a detachable V-shaped clamp for exhaust gas aftertreatment includes a first heat insulation cover 1 and a second heat insulation cover 2. One end of the first heat insulation cover 1 and the second heat insulation cover 2 are connected by a connecting shaft 4, and the other end is movably connected by a bracket 6 and a buckle 7.

[0033] The inner sides of the first heat insulation cover 1 and the second heat insulation cover 2 are provided with heat insulation cotton 5, which is made of glass fiber and is pasted on the inner sides of the first heat insulation cover 1 and the second heat insulation cover 2.

[0034] The bracket 6 and the wrench 8 are respectively installed on the first heat insulation cover 1 and the second heat insulation cover 2. The wrench 8 is provided with a buckle 7. By adjusting the buckle 7 and the bracket 6, the connection between the first heat insulation cover 1 and the second heat insulation cover 2 can be realized.

[0035] Adjust the buckle 7 by wrench 8. When the buckle 7 is engaged with the bracket 6, the first heat insulation cover 1 and the second heat insulation cover 2 are connected together to form a complete circle. When the buckle 7 is disengaged from the bracket 6, the first heat insulation cover 1 and the second heat insulation cover 2 are not connected and are in an open state.

[0036] The first heat insulation cover 1 is provided with a bolt avoidance cover 3. The bolt avoidance cover 3 is stamped and fixed to the first heat insulation cover 1 by welding. (The first heat insulation cover 1 has a square hole to avoid the bolts of the V-shaped clamp 10.) When the first heat insulation cover 1 and the second heat insulation cover 2 are closed as a whole, the bolt avoidance cover 3 is used to avoid the tightening bolts on the V-shaped clamp 10.

[0037] Both the first heat shield 1 and the second heat shield 2 are made of semi-circular metal and can be assembled to form a complete circle, fitting onto the surface of the V-shaped clamp 10.

[0038] As shown in Figure 8, the cross-section of the first heat insulation cover 1 and the second heat insulation cover 2 is trapezoidal, including the main body 12 and the overlapping part 21. The overlapping part 21 is located on both sides of the main body 12, and the overlapping part 21 forms an angle α with the main body 12, where α = 127°.

[0039] The free end of the overlapping part 21 is provided with a flange 210. The overlapping part 21 and the V-shaped clamp 10 form a matching relationship, and the flange 210 overlaps and fits with the cylindrical heat insulation cover 9 on both sides of the V-shaped clamp 10, as shown in Figures 9 and 10.

[0040] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heat insulation structure with a detachable V-shaped clamp for exhaust gas aftertreatment, characterized in that, It includes a first heat insulation cover (1) and a second heat insulation cover (2). One end of the first heat insulation cover (1) and the second heat insulation cover (2) are connected by a connecting shaft (4), and the other end is movably connected by a bracket (6) and a buckle (7). The inner side of the first heat insulation cover (1) and the second heat insulation cover (2) is provided with heat insulation cotton (5).

2. The heat insulation structure of the detachable V-shaped clamp for exhaust gas aftertreatment according to claim 1, characterized in that, The bracket (6) and the wrench (8) are respectively installed on the first heat insulation cover (1) and the second heat insulation cover (2). The wrench (8) is provided with a buckle (7). The buckle (7) and the bracket (6) are adjusted by the wrench (8) to achieve the connection or disconnection of the first heat insulation cover (1) and the second heat insulation cover (2).

3. The heat insulation structure of the detachable V-shaped clamp for exhaust gas aftertreatment according to claim 1, characterized in that, The first heat insulation cover (1) and / or the second heat insulation cover (2) are provided with bolt avoidance covers (3). When the first heat insulation cover (1) and the second heat insulation cover (2) are closed as a whole, the bolt avoidance covers (3) are used to avoid the tightening bolts on the V-shaped clamp (10).

4. The heat insulation structure of the detachable V-shaped clamp for exhaust gas aftertreatment according to claim 1, characterized in that, The first heat shield (1) and the second heat shield (2) are both made of semi-circular metal material, which can be assembled to form a complete circle and fit on the surface of the V-shaped clamp (10).

5. The heat insulation structure of the detachable V-shaped clamp for exhaust gas aftertreatment according to claim 1, characterized in that, The first heat shield (1) and the second heat shield (2) have trapezoidal cross sections, including a main body (12) and an overlapping part (21). The overlapping part (21) is located on both sides of the main body (12), and the overlapping part (21) forms an angle α with the main body (12), where 100° < α < 150°.

6. The heat insulation structure of the detachable V-shaped clamp for exhaust gas aftertreatment according to claim 5, characterized in that, The free end of the overlapping part (21) is provided with a flange (210). The overlapping part (21) and the V-shaped clamp (10) form a matching relationship, and the flange (210) overlaps and fits with the cylindrical heat insulation cover (9) on both sides of the V-shaped clamp (10).

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