CN211975113U

CN211975113U - Box aftertreatment ware of diesel vehicle and structure is dismantled to pull formula DPF thereof

Info

Publication number: CN211975113U
Application number: CN202020542292.2U
Authority: CN
Inventors: 陈增响; 何龙; 张旭; 何伟娇; 马相雪; 杨纯
Original assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Current assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-11-20
Anticipated expiration: 2030-04-14

Abstract

The utility model belongs to the technical field of diesel engine tail gas aftertreatment, and discloses a diesel vehicle box-type aftertreatment device and a pull-type DPF dismounting structure thereof, which comprises a DPF dismounting window cover, a DPF inner barrel assembly and a DOC-DPF outer barrel assembly; the DOC-DPF outer cylinder component comprises an outer cylinder arranged in the aftertreatment device box body and an annular retainer ring arranged in the outer cylinder; the DPF inner cylinder assembly comprises a DPF inner cylinder arranged in the outer cylinder, the rear end of the DPF inner cylinder is inserted into an annular retainer ring, the front end of the DPF inner cylinder is provided with the retainer ring, and the retainer ring is provided with a jacking bracket; the DPF is dismantled the window and is covered and utilize the front box cover of connecting clamp subassembly installation post processor and compress tightly the tight support in top. The utility model has simple structure, high integration performance and low cost; high stability, reliable sealing and convenient disassembly.

Description

Box aftertreatment ware of diesel vehicle and structure is dismantled to pull formula DPF thereof

Technical Field

The utility model belongs to the technical field of the diesel engine tail gas aftertreatment, concretely relates to box aftertreatment ware of diesel vehicle and structure is dismantled to pull formula DPF thereof.

Background

In the diesel exhaust after-treatment development to the six-emission stage, soot cleaning maintenance of DPF (diesel particulate filter) is necessary in the use stage, which requires that the DPF after-treatment device must be conveniently disassembled. The DPF disassembly solution not only requires good air tightness and reliability, but also requires simple disassembly structure, convenient disassembly, easy processing and manufacturing, low cost and the like. This is easy to achieve with a straight barrel post processor, but with a box type post processor, it is difficult to open a window and seal the box. Especially, some vehicle models require that the DPF can be quickly disassembled and sealed under the condition that an aftertreatment device box body is not disassembled, and a reliable solution is not available at present.

Disclosure of Invention

The utility model aims at solving the above problem, provide and realized a box aftertreatment ware of diesel vehicle and pull formula DPF dismantles structure, realized not needing to dismantle the dismouting DPF that the square chest aftertreatment ware can be convenient.

According to the technical scheme of the utility model, the drawing type DPF dismounting structure of the diesel vehicle box type postprocessor comprises a DPF dismounting window cover, a DPF inner cylinder component and a DOC (oxidation catalyst) -DPF outer cylinder component; the DOC-DPF outer cylinder component comprises an outer cylinder arranged in the aftertreatment device box body and an annular retainer ring arranged in the outer cylinder; the DPF inner cylinder assembly comprises a DPF inner cylinder arranged in the outer cylinder, the rear end of the DPF inner cylinder is inserted into an annular retainer ring, the front end of the DPF inner cylinder is provided with the retainer ring, and the retainer ring is provided with a jacking bracket; the DPF is dismantled the window and is covered and utilize the front box cover of connecting clamp subassembly installation post processor and compress tightly the tight support in top.

Furthermore, dismantle the window lid including the front shroud, thermal-insulated cotton and the back shroud that set gradually.

Further, be equipped with the sealing washer in the outer barrel, be equipped with the sealed head with sealing washer matched with in the DPF on the barrel.

Further, the sealing ring is an elastic metal sealing ring.

Furthermore, a drawing handle is arranged on the check ring.

Furthermore, the inner wall of the outer cylinder body is provided with salient points.

Further, the connection clamp assembly comprises a connection clamp used for tightening the DPF dismounting window cover and an elastic cushion arranged between the DPF dismounting window cover and the front box cover.

Furthermore, the elastic pad is an elastic graphite pad.

The utility model discloses an aspect provides a box aftertreatment ware of diesel vehicle, include as above-mentioned arbitrary pull formula DPF dismantle the structure.

Furthermore, a concave part for installing a urea nozzle is arranged on the box body of the post-processor.

The beneficial effects of the utility model reside in that:

by adopting the side window design of the box body and the disassembly window cover connected by the clamp, the work of disassembling and assembling the DPF on the side surface of the vehicle body can be realized without disassembling the postprocessor, and the disassembly window cover is convenient and quick;

an elastic pad is adopted as a sealing gasket between the detachable window cover and the box body end cover, so that the sealing performance of the detachable window cover is ensured, the transverse pressing force of the DPF is increased, and the sealing performance of the DPF is ensured;

the disassembly window cover adopts a three-layer design, and the middle layer is filled with heat insulation cotton, so that the temperature loss caused by the opening of the box body is prevented;

the DPF cylinder is provided with a jacking bracket, and when the window cover is disassembled, the elastic cushion generates larger compression amount through the transverse pressing force of the clamp hoop when being installed and pressed, so that the transverse pressing force of the DPF cylinder is provided, and the pressing, sealing and rear end fixing of the DPF are realized;

the DPF cylinder is provided with two drawing handles, so that the DPF cylinder is convenient to disassemble and assemble;

a sealing head is welded at the middle section of the DPF cylinder body, and the sealing head is inserted into a metal elastic sealing ring on the outer cylinder body during installation, so that the incoming flow of the DPF is sealed;

the DOC-DPF outer cylinder component is provided with a plurality of salient points for clamping the rear end of the DPF inner cylinder and is fixedly pressed with the front end of the DPF inner cylinder component, so that the strength of the DPF inner cylinder component is ensured, and the DPF inner cylinder component is prevented from displacing and shaking in the using process;

an annular check ring is arranged on the DOC-DPF outer cylinder assembly, and the rear end of the DPF inner cylinder assembly is inserted into the annular check ring, so that waste gas is prevented from entering a gap between the DPF inner cylinder assembly and the DOC-DPF outer cylinder assembly;

the disassembly structure of the DPF only adopts a pair of clamps for connection to realize the sealing and the disassembly of the DPF, and is simpler and lower in cost compared with the conventional cylinder type disassembly structure adopting double clamps;

the nozzle installation of box aftertreatment ware adopts hidden structural design, has reduced the space that the urea nozzle took, has promoted aftertreatment ware's integrated performance.

Drawings

Fig. 1 is an axial view of the box-type post-processor of the diesel vehicle of the present invention.

Fig. 2 is the utility model discloses the box aftertreatment ware pull formula DPF structure of diesel vehicle dismantles the schematic diagram.

Fig. 3 is an exploded view of the box-type post-processor of the diesel vehicle of the present invention.

Fig. 4 is a sectional view of the box-type post-processor of the diesel vehicle of the present invention.

Fig. 5 is an exploded view of the drawing DPF structure of the present invention.

Fig. 6 is the utility model discloses the disassembly window cover's of pull formula DPF structure decomposition schematic diagram.

FIG. 7 is an exploded view of the DOC-DPF outer cylinder assembly of the pull-out DPF structure of the present invention.

Fig. 8 is the utility model discloses barrel subassembly's decomposition schematic diagram in DPF of pull formula DPF structure.

Description of reference numerals: 1-DPF disassembly window cover, 1.1-front cover plate, 1.2-heat insulation cotton, 1.3-rear cover plate, 2-connection hoop component, 2.1-connection hoop, 2.2-elastic pad, 3-DPF inner cylinder component, 3.1-check ring, 3.2-DPF inner cylinder, 3.3-sealing head, 3.4-drawing handle, 3.5-top bracket, 4-DOC-DPF outer cylinder component, 4.1-sealing ring, 4.2-outer cylinder, 4.3-annular check ring, 5-DOC inner cylinder component, 6-front partition plate, 7-rear partition plate, 8-front box cover, 9-air inlet clam shell component, 10-urea nozzle, 11-urea mixer, 12-SCR front cover, 13-SCR cylinder component, 14-rear box cover, 15-outlet pipe, 16-left box clam shell, and, 17-right box clam shell.

Detailed Description

The invention will be further described with reference to the following specific embodiments and the accompanying drawings.

As shown in fig. 1-5: the box-type postprocessor of the diesel vehicle comprises a box body, a DPF dismounting window cover 1, a DOC-DPF assembly, an air inlet clam shell assembly 9, a urea nozzle 10, a urea mixer 11, an SCR (selective catalytic reduction) assembly and the like.

A front partition plate 6 and a rear partition plate 7 are welded in the box body, the box body comprises a left box body clam shell 16 and a right box body clam shell 17 which are buckled on two sides and welded on the front partition plate 6 and the rear partition plate 7, and a front box cover 8 and a rear box cover 14 which are welded in front of and behind the box body, and a concave part for installing a urea nozzle 10 is arranged on the right box body clam shell 17; the front box cover 8 is provided with a window and a flange, and the DPF dismounting window cover 1 is arranged on the flange of the front box cover 8 by utilizing the connecting hoop component 2; the connecting clamp assembly 2 can comprise a connecting clamp 2.1 used for tightening the DPF dismounting window cover 1 and an elastic cushion 2.2 arranged between the DPF dismounting window cover 1 and the front box cover 8, and the elastic cushion 2.2 can adopt an elastic graphite cushion with the thickness of 8 cm;

the DOC-DPF assembly comprises a DPF inner cylinder assembly 3, a DPF arranged in the DPF inner cylinder assembly 3, a DOC inner cylinder assembly 5 and a DOC arranged in the DOC inner cylinder assembly, wherein the DPF inner cylinder assembly 3 is arranged at the front end of the DOC-DPF outer cylinder assembly 4, and the DOC inner cylinder assembly 5 is welded at the rear end of the DOC-DPF outer cylinder assembly 4;

the SCR component comprises an SCR front end cover 12, an SCR cylinder component 13 and an SCR catalyst arranged in the SCR cylinder component 13, wherein the SCR front end cover 12 covers the end face of the SCR cylinder component 13 and is welded on the front partition plate 6;

the two ends of the DOC-DPF outer cylinder component 4, the urea mixer 11 and the SCR cylinder component 13 are respectively welded on the front partition plate 6 and the rear partition plate 7; the air inlet clam shell component 9 is welded on the DOC-DPF outer cylinder component 4 and extends out of the right box body clam shell 17; the air outlet pipe 15 is arranged on the rear box cover 14; the urea mixer 11 is connected to the urea nozzle 10.

As shown in fig. 4 and 5, the pull-out DPF disassembly structure is composed of a DPF disassembly window cover 1, a DPF inner cylinder assembly 2, a DPF outer cylinder assembly 4 and other parts.

As shown in fig. 6, the DPF detachable window cover is mainly composed of a front cover plate 1.1, heat insulation cotton 1.2, and a rear cover plate 1.3. The rear cover plate 1.3 is formed by stamping a thicker plate, has certain rigidity and is prevented from deforming in the pressing process; the middle heat insulation cotton 1.2 is filled in the gap between the front cover plate 1.1 and the rear cover plate 1.3 to prevent heat dissipation.

As shown in fig. 4 and 7, the DOC-DPF outer cylinder assembly 4 comprises an outer cylinder 4.2 and an annular retainer ring 4.3 arranged in the outer cylinder 4.2. A sealing ring 4.1 can be arranged in the outer cylinder body 4.2, and the sealing ring 4.1 can be an elastic metal sealing ring. For the barrel subassembly 3 in the better spacing DPF, can also be equipped with a plurality of bumps on the inner wall of outer barrel 4.2.

As shown in fig. 5 and 8, the DPF inner cylinder assembly 3 includes a DPF inner cylinder 3.2 installed in the outer cylinder 4.2 in a drawable manner, the rear end of the DPF inner cylinder 3.2 is inserted into the annular retainer ring 4.3, the front end of the DPF inner cylinder 3.2 is welded with the retainer ring 3.1, the retainer ring 3.1 is provided with a support 3.5 which is tightly supported, specifically, three, and uniformly distributed on the retainer ring 3.1. Barrel 3.2 is gone up and still can be equipped with the sealed head 3.3 with sealing washer 4.1 matched with in the DPF, and the middle part position of barrel 3.2 is put in the welding of sealed head 3.3, and sealed head inserts sealing washer 4.1 during the installation, realizes sealedly. In order to facilitate disassembly and assembly, the retainer ring 3.1 can be welded with two pull handles 3.4.

The working principle is as follows: after the installation is accomplished, because connect clamp 2.1 and tighten up the back, cushion 2.2 produces great transverse deformation to make dismantlement window lid 1 compress tightly the tight support in top 3.5 on barrel subassembly 3 in the DPF, barrel subassembly inserts in the DPF in the DOC-DPF outer barrel subassembly 4. Wherein, barrel 3.2 inserts in the DPF in the annular retaining ring 4.3, prevents that the waste gas of DPF front end from getting into in the DPF in the gap in barrel subassembly 3 and the outer barrel subassembly 4 centre of DOC-DPF to barrel subassembly 3 in the DPF of sootiness. The convex points uniformly distributed on the DOC-DPF outer barrel 4.2 fix the DPF inner barrel component 4, so that the DPF inner barrel component 4 is prevented from shaking. The sealing head 3.3 at the middle part of the cylinder component 3 in the DPF is inserted into the sealing ring 4.1 on the cylinder component 4 outside the DOC-DPF, so that the complete sealing of the DPF is realized, and the problem that the exhaust gas does not pass through the DPF and is leaked to cause the exceeding of particulate matters is prevented.

When barrel subassembly in the DPF is dismantled to needs, need not tear whole box aftertreatment ware open, and only need open connection clamp subassembly 2 in whole car side, tear the dismantlement window lid 1 open, then barrel subassembly 3 in taking DPF out through pull handle 3.4, sealed reliable, it is convenient to dismantle.

Claims

1. A drawing type DPF dismounting structure of a box type postprocessor of a diesel vehicle is characterized by comprising a DPF dismounting window cover (1), a DPF inner cylinder component (3) and a DOC-DPF outer cylinder component (4); the DOC-DPF outer cylinder component (4) comprises an outer cylinder (4.2) arranged in the aftertreatment device box body and an annular retainer ring (4.3) arranged in the outer cylinder (4.2); the DPF inner cylinder body assembly (3) comprises a DPF inner cylinder body (3.2) arranged in an outer cylinder body (4.2), the rear end of the DPF inner cylinder body (3.2) is inserted into an annular retainer ring (4.3), the front end of the DPF inner cylinder body (3.2) is provided with the retainer ring (3.1), and a jacking support (3.5) is arranged on the retainer ring (3.1); DPF dismantles window lid (1) and utilizes connection clamp subassembly (2) to install on the preceding case lid (8) of aftertreatment ware and compress tightly top tight support (3.5).

2. The pull type DPF dismounting structure of a box type postprocessor of a diesel vehicle as claimed in claim 1, wherein the dismounting window cover (1) comprises a front cover plate (1.1), a heat insulation cotton (1.2) and a rear cover plate (1.3) which are arranged in sequence.

3. The pull-out DPF dismounting structure of the box-type aftertreatment device of the diesel vehicle as claimed in claim 1, wherein a sealing ring (4.1) is arranged in the outer cylinder (4.2), and a sealing head (3.3) matched with the sealing ring (4.1) is arranged on the DPF inner cylinder (3.2).

4. The pull type DPF dismounting structure of the box type aftertreatment device of the diesel vehicle as claimed in claim 3, wherein said sealing ring (4.1) is an elastic metal sealing ring.

5. The pull type DPF dismounting structure of the box type postprocessor of the diesel vehicle as claimed in claim 1, wherein a pull handle (3.4) is arranged on the retainer ring (3.1).

6. The pull type DPF dismounting structure of the box type postprocessor of the diesel vehicle as claimed in claim 1, wherein the inner wall of the outer cylinder (4.2) is provided with salient points.

7. The pull type DPF disassembly structure of a diesel vehicle box type aftertreatment device according to claim 1, wherein the connection clamp assembly (2) comprises a connection clamp (2.1) for tightening the DPF disassembly window cover (1) and an elastic pad (2.2) disposed between the DPF disassembly window cover (1) and the front case cover (8).

8. The pull type DPF dismounting structure of a box type aftertreatment device of a diesel vehicle as claimed in claim 7, wherein said elastic pad (2.2) is an elastic graphite pad.

9. A box type after-treatment device for diesel vehicles, characterized in that it comprises a pull-out DPF dismounting structure according to any one of claims 1 to 8.

10. The diesel vehicle box type post processor as claimed in claim 9, wherein a recess for installing the urea nozzle (10) is provided on the box body of the post processor.