CN213177189U

CN213177189U - Post-treatment barrel flange hoop connecting structure

Info

Publication number: CN213177189U
Application number: CN202021824746.1U
Authority: CN
Inventors: 胡忠斌; 朱玉星; 管其兵
Original assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Current assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-05-11
Anticipated expiration: 2030-08-27

Abstract

The utility model relates to a post-processing barrel flange hoop connecting structure, which comprises a first barrel and a second barrel, wherein the rear end of the first barrel is provided with an expanding opening along the radial direction, and the second barrel is assembled in the expanding opening in an inserting way; the connecting structure is used for connecting the first cylinder and the second cylinder, wherein the connecting structure comprises a first flange, a second flange and a hoop, and the first flange is arranged on the outer wall of the flaring; the second flange is arranged on the outer wall of the second cylinder and is positioned at the position of the corresponding first flange after the first cylinder and the second cylinder are assembled; the two are mutually clamped and matched through a gasket; the anchor ear is sleeved on the periphery of the two assembled flanges. The structure is simple, compact and reasonable, and the influence of the hoop mode of the welding flange of the barrel on the length of the packaging structure is reduced. The post-processing packaging arrangement of the complex vehicle model is facilitated.

Description

Post-treatment barrel flange hoop connecting structure

Technical Field

The utility model belongs to the technical field of the automobile exhaust aftertreatment trade, concretely relates to aftertreatment barrel flange staple bolt connection structure.

Background

With the stricter diesel emission regulations, the six national standards are about to be implemented, and DPF (particulate trap system) exhaust gas after-treatment technology is a technical measure that must be adopted. The DPF (particulate trap system) can meet the emission standards of China V and China VI, the DPF is a Diesel particulate trap (Diesel particulate filter) for short, and a special wall-flow structure of the DPF can effectively trap particulate matters in exhaust of a Diesel engine and reduce PM emission. When the trapped particulate matter in the DPF increases to a certain mass, which causes an increase in exhaust back pressure, deterioration of in-cylinder combustion, and a decrease in engine performance, measures are taken to remove the particulate matter (mainly soot) in the DPF, and this process is called DPF regeneration. The catalytic oxidizer doc (diesel Oxidation catalyst) can reduce the ignition temperature of HC in the exhaust gas, and is often used in conjunction with DPF for active or passive regeneration. PM is continuously accumulated in the filter body during the operation of the diesel engine, and when the exhaust back pressure rises to a certain extent, the operation condition of the diesel engine is deteriorated. At this time, measures must be taken to remove the trapped PM and restore the filter to its original operating state, and this process becomes regeneration. However, after PM reaches a certain cumulative regeneration failure, the DPF needs to be disassembled for maintenance. But the direct barrel of flange staple bolt is connected, and welding flange and barrel need have certain clearance, consequently uses ordinary flange staple bolt to connect and can increase DPF aftertreatment packaging structure axial dimension to influence packaging structure and arrange. (especially for off-road machines, the space is small and the arrangement is compact).

Disclosure of Invention

The invention aims to reduce the influence of a barrel welding V-shaped flange on the length of a post-processing packaging structure by using a barrel flaring opposite insertion mode without changing a detachable structure, so that the DPF packaging structure is more compact and reliable.

The post-processing barrel flange hoop connecting structure comprises a first barrel and a second barrel, wherein a flared opening is formed in the rear end of the first barrel along the radial direction, and the second barrel is assembled in the flared opening in an inserting manner;

the connecting structure is characterized by being used for connecting the first cylinder with the second cylinder, wherein the connecting structure comprises a first flange, a second flange and a hoop;

the first flange is arranged on the outer wall of the flaring;

the second flange is arranged on the outer wall of the second cylinder and is positioned at the position of the corresponding first flange after the first cylinder and the second cylinder are assembled; the two are mutually clamped and matched through a gasket;

the anchor ear is sleeved on the periphery of the two assembled flanges.

Further, the first flange is provided with a protruding part;

the second flange comprises a groove and a notch, wherein the notch is used for accommodating the lug boss and is matched with the lug boss;

and a gasket is arranged in the groove.

Further, first flange and second flange are V type flange, and first flange and second flange all adopt the welding mode to set up on corresponding barrel.

Further, the gasket is a graphite gasket.

Has the advantages that:

simple structure, compactness, reasonable reduce the influence of barrel welded flange staple bolt mode to packaging structure length. The post-processing packaging arrangement of the complex vehicle model is facilitated.

Drawings

Fig. 1 is a schematic view of the overall assembly of the present invention.

Fig. 2 is a schematic view of the connection structure at the dotted line frame I in fig. 1 according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will describe in further detail common embodiments of the present invention with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

As shown in fig. 1-2:

a post-processing barrel flange hoop connecting structure comprises a first barrel 1 and a second barrel 6, wherein a flared opening 1.1 is formed in the rear end of the first barrel 1 outwards in the radial direction, and the second barrel 6 is assembled in the flared opening 1.1 in an insertion mode; in this example, the first cylinder is a cylinder in which DOC catalyst is encapsulated, and the second cylinder 6 is a DPF cylinder, and can be adjusted as needed in actual operation.

The connecting structure is characterized by being used for connecting a first barrel with a second barrel 6, wherein the connecting structure comprises a first flange 2, a second flange 4 and a hoop 5;

the first flange 2 is arranged on the outer wall of the flaring 1.1;

the second flange 4 is arranged on the outer wall of the second cylinder 6 and is positioned at the position of the corresponding first flange 2 after the first cylinder and the second cylinder 6 are assembled; the second flange 4 and the outer wall of the second cylinder 6 are mutually clamped and matched through a gasket 3; first flange 2 and second flange all adopt the welding mode to set up on corresponding barrel.

The hoop 5 is sleeved on the periphery of the two assembled flanges. The hoop 5 is tightly held to ensure air tightness.

The first flange 2 and the second flange 4 are both V-shaped flanges, and the first flange 2 is provided with a convex part 2.1; the second flange 4 comprises a groove 4.2 and a notch 4.3, wherein the notch 4.3 is used for accommodating the boss 2.1, and the notch 4.3 and the boss are matched with each other;

a gasket 3 is arranged in the groove 4.2. The gasket 3 is a graphite gasket.

Compared with the common flange hoop connection mode, the connection mode reduces the gap between the hoop flanges, so that the connection of the two cylinders is more compact and reliable.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes made to the above embodiments according to the utility model all still belong to the protection scope of the technical scheme of the utility model.

Claims

1. A post-processing barrel flange hoop connecting structure comprises a first barrel (1) and a second barrel (6), wherein a flared opening (1.1) is formed in the rear end of the first barrel (1) outwards along the radial direction, and the second barrel is assembled in the flared opening (1.1) in an insertion mode;

the connecting structure is characterized by being used for connecting a first barrel with a second barrel, wherein the connecting structure comprises a first flange (2), a second flange (4) and a hoop (5);

the first flange (2) is arranged on the outer wall of the flaring (1.1);

the second flange (4) is arranged on the outer wall of the second cylinder (6) and is positioned at the position of the corresponding first flange after the first cylinder and the second cylinder (6) are assembled; the two are mutually clamped and matched through a gasket (3);

the hoop (5) is sleeved on the periphery of the two assembled flanges.

2. The post-treatment cylinder flange hoop connecting structure according to claim 1,

the first flange (2) is provided with a convex part (2.1);

the second flange (4) comprises a groove (4.2) and a notch (4.3), wherein the notch (4.3) is used for accommodating the lug boss (2.1), and the notch and the lug boss are matched with each other;

and a gasket (3) is arranged in the groove (4.2).

3. The post-treatment cylinder flange hoop connecting structure according to claim 1,

first flange (2) and second flange (4) are V type flange, and first flange and second flange all adopt the welding mode to set up on corresponding barrel.

4. The flange hoop connecting structure of the aftertreatment cylinder body according to claim 1, wherein the gasket (3) is a graphite gasket.