CN213684272U

CN213684272U - Pull formula DPF seal structure that can swiftly dismouting

Info

Publication number: CN213684272U
Application number: CN202022644704.6U
Authority: CN
Inventors: 李平; 黄育明; 汤琪林
Original assignee: LOTUSFAIRY POWER TECHNOLOGIES CORP
Current assignee: LOTUSFAIRY POWER TECHNOLOGIES CORP
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-07-13
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses a pull formula DPF seal structure that can swiftly dismouting, include: the shell assembly comprises a guide cylinder, a baffle, a shell body and a fixed flange, the shell body is fixedly connected with the front end face of the guide cylinder through the baffle and forms a complete cavity, the fixed flange is arranged at the front end of the shell body, the guide cylinder is further connected with a DOC assembly, and the shell body is further communicated with the mixer assembly; the DPF assembly comprises a DPF and an inner cylinder body, a hump structure is arranged at the front end of the inner cylinder body, the inner cylinder body is arranged to just penetrate into the guide cylinder, the hump structure of the inner cylinder body is positioned at the front end of the fixed flange, a gap is formed between the hump structure and the fixed flange, and the DPF is arranged in the inner cylinder body; and the V-shaped hoop is used for locking the hump structure of the inner cylinder body and the fixed flange. The utility model discloses a structure can use tool quick assembly disassembly commonly used, is convenient for maintain, has reliable sealing performance simultaneously.

Description

Pull formula DPF seal structure that can swiftly dismouting

Technical Field

The utility model discloses diesel engine tail gas aftertreatment technical field. More specifically speaking, the utility model relates to a pull formula DPF seal structure that can swiftly dismantle.

Background

DPF (diesel Particulate filter) refers to a device, abbreviated as DPF, installed in an engine exhaust system for reducing Particulate matter in exhaust gas by filtering. When the surface of the DPF carrier is coated with a catalyst, it is called a catalyzed particulate filter (CDPF).

With the implementation of the national emission standards, the requirements on the control of automobile exhaust emission pollutants are more and more strict. The DPF can effectively filter 70% -95% of particulate matters in the tail gas, and becomes standard configuration in the exhaust control device of the national six-standard diesel engine, so that the DPF is widely applied.

When tail gas passes through the DPF, a large amount of particulate matters are adsorbed by the DPF, and with the increase of working time, the particulate matters adsorbed by the DPF are gradually accumulated, an air flow channel is narrowed, so that exhaust back pressure is increased, and then the DPF needs to be regenerated and maintained.

Currently, the accumulated carbon particles in the DPF are oxidized by means of active regeneration or passive regeneration. However, the exhaust gas also contains sulfides, ash generated by combustion of engine oil, and the like, and cannot be treated by active regeneration or passive regeneration. Therefore, regardless of the regeneration technique, the DPF must be periodically disassembled to clean the ash.

At present, many diesel vehicles are when putting in order the car and arrange, and exhaust control device receives the installation space restriction, adopts box integrated type (like the major batch motorcycle types such as heavy vapour, dongfeng), the utility model discloses an application is just to integrated type exhaust control device's DPF quick assembly disassembly and propose.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pull formula DPF seal structure that can swiftly dismouting, this structure can use tool commonly used quick assembly disassembly, is convenient for maintain, has reliable sealing performance simultaneously.

In order to realize these objects and other advantages in accordance with the present invention, there is provided a drawer type DPF sealing structure capable of being quickly disassembled and assembled, comprising:

the shell assembly comprises a guide cylinder, a baffle, a shell body and a fixed flange, the shell body is fixedly connected with the front end face of the guide cylinder through the baffle and forms a complete cavity, the fixed flange is arranged at the front end of the shell body, the DOC assembly is further connected with the rear end of the guide cylinder, a hollow cavity is formed inside the shell body, and the shell body is further communicated with the mixer assembly;

the DPF assembly comprises a DPF and an inner cylinder body, a hump structure is arranged at the front end of the inner cylinder body, the inner cylinder body is arranged to just penetrate into the guide cylinder, the hump structure of the inner cylinder body is positioned at the front end of the fixed flange, a gap is formed between the hump structure and the fixed flange, and the DPF is arranged in the inner cylinder body and communicated with a hollow cavity of the outer shell;

and the V-shaped hoop is used for locking the hump structure of the inner cylinder body and the fixed flange.

Preferably, the tail end of the guide cylinder is provided with a conical necking, and the tail end of the inner cylinder body is also provided with a conical necking matched with the tail end of the guide cylinder.

Preferably, the inner wall of the inner cylinder body is further provided with a gasket which is coated on the DPF.

Preferably, the hump structure of the inner cylinder body is covered with an end cover which forms a complete cavity with the inner cylinder body.

Preferably, a disassembling handle is further arranged in the DPF assembly and used for pulling the DPF assembly.

Preferably, the upper parts of the outer shell and the baffle plate protrude above the guide cylinder, and the mixer assembly is connected with the upper part of the baffle plate.

The utility model discloses at least, include following beneficial effect:

1. the utility model has simple operation and convenient DPF maintenance, and the DPF can be disassembled only by disassembling a V-shaped clamp and taking down the end cover, thereby improving the disassembling efficiency;

2. compared with other similar designs (locking by bolts or pressing by a plurality of pressing codes), the utility model has fewer related parts and reduces the risk of losing parts during disassembly and assembly;

3. the utility model has reliable and durable sealing performance, and ensures long-term use of the product;

4. the rear part of the DPF assembly of the utility model has no other functional parts, and after the air flow passes through the DPF, the air flow is guided from the side surface of the barrel in the DPF to enter the upper space and then enter the mixer assembly, on one hand, the size of the DPF is not limited, and the air flow can be matched according to the discharge capacity of a vehicle; on the other hand, the air flow space behind the DPF is sufficient, the air flow uniformity and the overall backpressure can be ensured, and the indexes are the conditions which are necessarily met by the national six EGP product.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is an airflow flow pattern after the structure of the present invention is installed;

FIG. 2 is a cross-sectional view of the structure of the present invention after installation;

FIG. 3 is an elevation view of the structure of the present invention after installation;

FIG. 4 is an exploded view of the components of the structure of the present invention;

FIG. 5 is an exploded view of the components of the structure of the present invention;

fig. 6 is a schematic view of the outer housing assembly of the present invention;

fig. 7 is a schematic diagram of the DPF assembly of the present invention.

Description of reference numerals:

1. a guide cylinder; 2. a baffle plate; 3. an outer housing; 4. a fixed flange; 5. an inner cylinder; 6. a liner; 7. a DPF; 8. disassembling the handle; 9. a V-shaped clamp; 10. an end cap; 11. a housing assembly; 12. a DPF assembly; 13. a DOC component; 14. a mixer assembly.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Examples

As shown in fig. 1 to 7, the utility model provides a pull formula DPF seal structure that can swiftly dismantle, include:

the shell assembly 11 comprises a guide cylinder 1, a baffle 2, a shell 3 and a fixed flange 4, the shell 3 is fixedly connected with the front end face of the guide cylinder 1 through the baffle 2 to form a complete cavity, the fixed flange 4 is arranged at the front end of the shell 3, the tail end of the guide cylinder 1 is provided with a conical necking, the rear end of the guide cylinder 1 is also connected with a DOC assembly 13, the inner part of the shell 3 is a hollow cavity, the shell 3 is also communicated with a mixer assembly 14, the upper parts of the shell 3 and the baffle 2 are both protruded above the guide cylinder 1, the mixer assembly 14 is connected with the upper part of the baffle 2 and then communicated with the mixer assembly 14, and the upper part of the baffle 2 is provided with a connected circular through hole;

the DPF component 12 comprises a DPF7 and an inner cylinder 5, a hump structure is arranged at the front end of the inner cylinder 5, an end cover 10 is further covered on the hump structure of the inner cylinder 5 and forms a complete cavity with the inner cylinder 5, a tapered necking matched with the tail end of the guide cylinder 1 is also arranged at the tail end of the inner cylinder 5, a liner 6 is further arranged on the inner wall of the inner cylinder 5 and covers the DPF, the inner cylinder 5 is arranged to penetrate into the guide cylinder 1 right, the hump structure of the inner cylinder 5 is arranged at the front end of the fixed flange 4, a gap is formed between the hump structure and the guide cylinder, and a DPF7 is arranged inside the inner cylinder 5 and communicated with the hollow cavity of the outer shell 3; a disassembling handle 8 is also arranged in the DPF assembly 12 and used for drawing the DPF assembly 12;

and the V-shaped clamp 9 is used for locking the hump structure of the inner cylinder body 5 and the fixed flange 4.

In the above-mentioned embodiment, during installation of DPF assembly 12, along 1 axial positioning of guide cylinder push into shell subassembly 11, when the toper throat to the 5 tail ends of interior barrel of DPF assembly 12 contacted with the toper throat of 1 tail ends of guide cylinder, DPF assembly 12 stops, certain horizontal clearance has between the hump structure of interior barrel 5 and the mounting flange 4 of shell subassembly 11 this moment, then with end cover 10, the hump structure of interior barrel 5, mounting flange 4 cooperation installation, and use V type clamp 9 to connect the fastening, barrel 5 and the 1 afterbody toper throat of shell subassembly 11 guide cylinder are compressed tightly simultaneously in DPF assembly 12 this moment, form good seal structure, guarantee the gas tightness of whole structure, complete set of DPF assembly 12 is installed promptly.

When the DPF assembly 12 is disassembled, the V-shaped clamp 9 is loosened by using a conventional wrench, the end cover 10 can be taken down, and then the disassembling handle 8 of the DPF assembly 12 is grabbed to integrally pull out the DPF assembly 12.

The utility model discloses a connected mode of structure and other parts of diesel engine tail gas aftertreatment device (EGP) (DOC subassembly 13, blender subassembly 14) is shown in figure 1, and tail gas flows into this structure through DOC subassembly 13, then gets into blender subassembly 14.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims

1. The utility model provides a pull formula DPF seal structure that can swiftly dismantle, its characterized in that includes:

2. A quick detachable pull type DPF sealing structure as set forth in claim 1, wherein the tail end of the guiding cylinder is provided with a tapered necking, and the tail end of the inner cylinder is also provided with a tapered necking matched with the tail end of the guiding cylinder.

3. A quick detachable pull type DPF sealing structure as claimed in claim 1, wherein a gasket is further disposed on the inner wall of the inner cylinder and covers the DPF.

4. A quick detachable pull type DPF sealing structure according to claim 1, wherein an end cover is further covered on the hump structure of the inner cylinder body, and forms a complete cavity with the inner cylinder body.

5. A quick-release pull-out DPF sealing structure according to claim 1, wherein a release handle is further provided in the DPF assembly for pulling the DPF assembly.

6. A quick detachable pull type DPF sealing structure according to claim 1, wherein the outer housing and the upper portion of the baffle plate are protruded above the guide cylinder, and the mixer assembly is connected to the upper portion of the baffle plate.