CN212898668U

CN212898668U - All detachable national six-cylinder postprocessor of each section

Info

Publication number: CN212898668U
Application number: CN202021718684.6U
Authority: CN
Inventors: 殷桂权; 徐超; 曲洪亮; 徐文清; 胡婷; 徐浩兴; 段一军
Original assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Current assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-06
Anticipated expiration: 2030-08-18

Abstract

The utility model relates to an equal detachable of each section six cylinder postprocessors in state belongs to automobile exhaust aftertreatment field, and it includes air inlet, barrel and blast pipe, the barrel includes a plurality of circular cylinder, be connected through the staple bolt subassembly between the circular cylinder, inside oxidation type catalytic conversion device, particle filtration device, blender and the selective catalytic reduction device of being provided with of circular cylinder, the air inlet is connected through the neck chamber with the barrel, oxidation type catalytic conversion device, particle filtration device, blender and selective catalytic reduction device's the circular cylinder in outside loops through the staple bolt subassembly and is connected, the circular cylinder in outside of selective catalytic reduction device is connected with the blast pipe. The utility model discloses can change blender and aftertreatment ware alone, greatly reduced the replacement cost, structural design is simple to can install fast and dismantle.

Description

All detachable national six-cylinder postprocessor of each section

Technical Field

The utility model relates to an equal detachable national six cylinder postprocessors of each section belongs to the automobile exhaust aftertreatment field.

Technical Field

With the stricter emission regulations of diesel engines, the exhaust gas after-treatment technology is a technical measure which must be adopted.

The five-stage domestic cylindrical after-treatment mainly comprises an oxidation type catalytic conversion device and a particle filtering device or an oxidation type catalytic conversion device and a selective catalytic reduction device, the appearance structure is relatively simple, and the cylindrical after-treatment assembly mainly comprises the oxidation type catalytic conversion device, the particle filtering device and the selective catalytic reduction device in the six stages of China. The first task of the selective catalytic reduction unit route is to mix the exhaust gas with the ammonia mist thoroughly and to perform a chemical reaction, in which the mixer plays a crucial role. The existing mixer often has the problem of urea crystallization due to various reasons, so that the tail gas treatment is incomplete.

Disclosure of Invention

An object of the utility model is to overcome the aforesaid not enough, provide an equal detachable national six cylinder postprocessors of each section, realize that each module of national six postprocessors is removable, can unpick and wash the blender of middle crystallization.

According to the technical scheme of the utility model, each equal detachable national six cylinder aftertreatment ware of section, including air inlet, barrel and blast pipe, the barrel includes a plurality of circular cylinder, be connected through the staple bolt subassembly between the circular cylinder, inside oxidation type catalytic conversion device, particle filtration device, blender and the selective catalytic reduction device of being provided with of circular cylinder, the air inlet is connected through the neck chamber with the barrel, oxidation type catalytic conversion device, particle filtration device, blender and selective catalytic reduction device's the circular cylinder in outside loops through the staple bolt subassembly and is connected, the circular cylinder in outside of selective catalytic reduction device is connected with the blast pipe.

As a further improvement, the staple bolt subassembly includes staple bolt, gasket and punching press sealing flange, the gasket sets up in blender and selective catalytic reduction device kneck, punching press sealing flange forms for two half flange structure welding, half flange structure sets up respectively at the circular barrel kneck in the outside of blender and selective catalytic reduction device, the staple bolt sets up in the outside of punching press sealing flange.

As a further improvement, the staple bolt includes hoop and fastening bolt, and the hoop junction is provided with the screw hole, and fastening bolt passes through the nut and fixes the hoop.

The utility model discloses can change blender and aftertreatment ware alone, greatly reduced the replacement cost, structural design is simple to can install fast and dismantle.

Drawings

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

Fig. 2 is an enlarged view of a in the overall structure.

Fig. 3 is a schematic structural diagram of the hoop.

Description of reference numerals: the device comprises a 1-air inlet, a 2-neck cavity, a 3-oxidation type catalytic conversion device, a 4-particle filtering device, a 5-mixer, a 6-selective catalytic reduction device, a 7-exhaust pipe, an 8-cylinder, a 9-hoop component, a 10-hoop, a 10.1-hoop, a 10.2-fastening bolt, an 11-gasket, a 12-stamping sealing flange and a 13-half flanging structure.

Detailed Description

The invention will be further elucidated in the following in accordance with the drawings.

As shown in fig. 1 to 3, a national six-cylinder type post-processor with all detachable sections comprises an air inlet 1, a cylinder 8 and an exhaust pipe 7, wherein the cylinder 8 comprises a plurality of circular cylinders, the circular cylinders are connected through a hoop component 9, an oxidation type catalytic conversion device 3, a particle filtering device 4, a mixer 5 and a selective catalytic reduction device 6 are arranged in the circular cylinders, the air inlet 1 is connected with the cylinder 8 through a neck cavity 2, the oxidation type catalytic conversion device 3, the particle filtering device 4, the mixer 5 and the outer circular cylinders of the selective catalytic reduction device 6 are connected through the hoop component 9 in sequence, and the outer circular cylinders of the selective catalytic reduction device 6 are connected with the exhaust pipe 7.

The oxidation-type catalytic conversion device 3 includes an oxidation-type catalytic conversion carrier, an oxidation-type catalytic conversion carrier mat, and the like; the device has the function of oxidizing carbon monoxide and hydrocarbon in the tail gas and converting the carbon monoxide and the hydrocarbon into nontoxic and harmless carbon dioxide and water. Meanwhile, the soluble organic components and part of carbon particles can be absorbed, and the emission of part of PM is reduced. And oxidizes the nitrogen monoxide into nitrogen dioxide (which is also a source gas for the reaction of the next-stage selective catalytic reduction device).

The particle filtering device 4 comprises a particle filtering carrier, a particle filtering carrier gasket and the like, and is used for further capturing PM particles in the exhaust gas, and the filtering efficiency is about 90%.

The mixer 5 comprises a mixing barrel body, a cyclone tube mounting baffle, a urea nozzle mounting seat and the like; the device is used for mixing urea particles with tail gas filtered by a front stage to serve as a reaction source of a next stage.

The selective catalytic reduction device 6 includes a selective catalytic reduction carrier, a selective catalytic reduction carrier mat, etc., and functions to convert nitrogen oxides into nitrogen and water using urea as a reducing agent under the action of a catalyst on the selective catalytic reduction carrier using a reaction source gas formed by a previous-stage mixer device.

Further, the hoop component 9 includes a hoop 10, a gasket 11 and a stamping sealing flange 12, the gasket 11 is disposed at the interface between the mixer 5 and the selective catalytic reduction device 6, the stamping sealing flange 12 is formed by welding two half flanging structures 13, the half flanging structures 13 are respectively disposed at the interface between the outer circular cylinders of the mixer 5 and the selective catalytic reduction device 6, and the hoop 10 is disposed at the outer side of the stamping sealing flange 12.

Further, the hoop 10 comprises a hoop 10.1 and a fastening bolt 10.2, a threaded hole is formed in the joint of the hoop 10.1, and the fastening bolt 10.2 fixes the hoop 10.1 through a nut.

The aftertreatment structure after the improvement adopts the segmentation connected mode the same with front end particle filter equipment, and blender 5 and selective catalytic reduction device 6 all can be dismantled alone like this, and blender 5 can wash after the crystallization, assembles after the completion of the washing and can use repeatedly, greatly reduced use cost. The improved structure and the improved structure are not obviously lengthened, and the exchange with the improved structure can be realized.

Claims

1. A national six-cylinder type postprocessor with all detachable sections, which comprises an air inlet (1), a cylinder body (8) and an exhaust pipe (7), it is characterized in that the cylinder body (8) comprises a plurality of circular cylinder bodies which are connected with each other through a hoop component (9), an oxidation type catalytic conversion device (3), a particle filtering device (4), a mixer (5) and a selective catalytic reduction device (6) are arranged in the circular cylinder body, the air inlet (1) is connected with the cylinder body (8) through the neck cavity (2), the outer circular cylinders of the oxidation type catalytic conversion device (3), the particle filtering device (4), the mixer (5) and the selective catalytic reduction device (6) are connected in turn through a hoop component (9), the round cylinder body at the outer side of the selective catalytic reduction device (6) is connected with an exhaust pipe (7).

2. The national six-cylinder type post-processor with all detachable sections as claimed in claim 1, wherein the hoop component (9) comprises a hoop (10), a gasket (11) and a stamping sealing flange (12), the gasket (11) is arranged at the interface of the mixer (5) and the selective catalytic reduction device (6), the stamping sealing flange (12) is formed by welding two half-flanging structures (13), the half-flanging structures (13) are respectively arranged at the interface of the outer circular cylinders of the mixer (5) and the selective catalytic reduction device (6), and the hoop (10) is arranged at the outer side of the stamping sealing flange (12).

3. The national six-barrel type post processor with detachable sections is characterized in that the hoop (10) comprises a hoop (10.1) and a fastening bolt (10.2), a threaded hole is formed in the joint of the hoop (10.1), and the fastening bolt (10.2) fixes the hoop (10.1) through a nut.