Novel DPF air inlet turbulent flow structure device

Abstract

The utility model provides a novel DPF air inlet turbulent flow structure device. The novel DPF air inlet turbulent flow structure device comprises a fixing ring, the fixing ring is fixedly connected with the inner side wall of a hoop, a DOC catalytic converter and a DPF catalytic converter are fixed together through the hoop, a plurality of through holes are formed in the center of the interior of the fixing ring, and nine rotational flow blades are obliquely installed on the outer side wall of the fixing ring. The novel DPF air inlet turbulent flow structure device has the advantages that the uniformity of air flow is improved, the regeneration efficiency of a DPF catalyst is effectively guaranteed, and soot in the catalyst is removed in time.

Description

Technical Field

[0001] The utility model relates to the technical field of DPF catalysts, in particular to a novel DPF air intake spoiler structure device. Background Art

[0002] The DPF catalyst is the most important external purification device installed in the automobile exhaust system. When the high-temperature automobile exhaust passes through the purification device and the porous enamel core of the three-way catalytic converter, the core is equipped with metals such as platinum, rhodium and palladium. It can convert harmful gases such as carbon monoxide, hydrocarbons and nitrogen oxides emitted by the automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction, thereby purifying the automobile exhaust.

[0003] Before automobile exhaust passes through the DOC catalyst and enters the DPF catalyst, the flow velocity in the middle of the exhaust gas is relatively large, while the flow velocities at both ends of the exhaust gas are relatively small. The airflow is unevenly distributed in the pipeline, and most of the gas enters the center of the DPF catalyst. Too much exhaust gas is processed in the middle of the DPF catalyst, resulting in low regeneration efficiency of the DPF catalyst during the regeneration process. The carbon soot cannot be completely removed, and there is a risk of the DPF catalyst clogging the entire post-treatment process and causing it to fail.

[0004] Therefore, it is necessary to provide a new DPF air intake spoiler structure device to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a novel DPF air intake spoiler structure device which can improve airflow uniformity, effectively ensure the regeneration efficiency of the DPF catalyst and timely remove carbon smoke inside the catalyst.

[0006] In order to solve the above technical problems, the new DPF intake spoiler structure device provided by the utility model includes: a fixing ring, which is fixedly connected to the inner side wall of the clamp, and the DOC catalyst and the DPF catalyst are fixed together by the clamp, and a plurality of through holes are provided in the center of the interior of the fixing ring, and nine swirl blades are obliquely installed on the outer side wall of the fixing ring.

[0007] Preferably, the side wall of the fixing ring is provided with a plurality of grooves, and swirl blades are installed at the edges of the grooves.

[0008] Preferably, the number of the grooves is the same as that of the swirl blades, and the inclination angle between the swirl blades and the fixing ring is 30-50°.

[0009] Compared with the related art, the novel DPF air intake spoiler structure device provided by the utility model has the following beneficial effects:

[0010] The utility model provides a novel DPF intake spoiler structure device, after the exhaust gas passes through the DOC catalyst, the intermediate flow velocity is relatively large and enters the interior of the clamp, the surface of the fixed ring is provided with a plurality of through holes, the through holes intercept the exhaust gas, and prevent a large amount of exhaust gas from quickly penetrating the fixed ring and entering the interior of the DPF catalyst, so that the exhaust gas contacts the swirl blades through the grooves, and the exhaust gas circulates through the through holes and the grooves, so that the overall flow surface of the spoiler device is larger, and the back pressure of the post-treatment is less affected; and the inclination angle between the swirl blades and the fixed ring is 30-50 degrees, the exhaust gas tilts along the swirl blades, and the swirl blades rotate and disturb the overall airflow, so as to ensure that the airflow is more evenly distributed inside the DPF catalyst; the spoiler device adopts a small hole + swirl blade structure, which can improve the uniformity of the airflow in a targeted manner, effectively ensure the regeneration efficiency of the DPF catalyst, and timely remove the carbon smoke inside the catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the structure of a novel DPF air intake spoiler structure device provided by the utility model;

[0012] Figure 2 for Figure 1 The schematic diagram of the internal structure of the clamp shown;

[0013] Figure 3 for Figure 2 Schematic diagram of the fixing ring structure shown.

[0014] Numbers in the figure: 1, DOC catalyst, 2, clamp, 3, DPF catalyst, 4, swirl blade, 5, fixing ring, 6, through hole, 7, groove. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0016] Please refer to Figure 1 , Figure 2 and Figure 3 ,in Figure 1 A schematic diagram of the structure of a novel DPF air intake spoiler structure device provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the internal structure of the clamp shown; Figure 3 for Figure 2The schematic diagram of the fixing ring structure is shown. The novel DPF intake spoiler structure device comprises: a fixing ring 5, the fixing ring 5 is fixedly connected to the inner side wall of the clamp 2, the DOC catalyst 1 and the DPF catalyst 3 are fixed together by the clamp 2, a plurality of through holes 6 are arranged in the center of the fixing ring 5, nine swirl blades 4 are obliquely installed on the outer side wall of the fixing ring 5; a plurality of grooves 7 are arranged on the side wall of the fixing ring 5, and swirl blades 4 are installed at the edges of the grooves 7; the number of the grooves 7 is the same as that of the swirl blades 4, and the inclination angle between the swirl blades and the fixing ring 5 is 30 to 50 degrees; after the exhaust gas passes through the DOC catalyst 1, the intermediate flow velocity is relatively large and enters the interior of the clamp 2, the The surface of the fixing ring 5 is provided with a plurality of through holes 6, and the through holes 6 intercept the exhaust gas to prevent a large amount of exhaust gas from quickly penetrating the fixing ring 5 and entering the DPF catalyst 3, so that the exhaust gas contacts the swirl blade 4 through the groove 7. The inclination angle between the swirl blade 4 and the fixing ring 5 is 30 to 50 degrees. The exhaust gas moves along the swirl blade 4, and the swirl blade 4 performs rotational disturbance on the overall airflow to ensure that the airflow is more evenly distributed inside the DPF catalyst 3. After the uniformity of the airflow on the surface of the DPF catalyst is improved, the regeneration efficiency of the DPF catalyst can be effectively guaranteed, and the gas evenly penetrates the DPF catalyst 3 to facilitate the rapid and timely expulsion of the carbon smoke inside the catalyst.

[0017] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A novel DPF air intake spoiler structure device, characterized in that: include: A fixing ring (5) is fixedly connected to the inner side wall of the clamp (2), and the DOC catalyst (1) and the DPF catalyst (3) are fixed together through the clamp (2). A plurality of through holes (6) are provided at the center of the fixing ring (5), and nine swirl blades (4) are obliquely installed on the outer side wall of the fixing ring (5).

2. The novel DPF air intake spoiler structure device according to claim 1 is characterized in that: The side wall of the fixing ring (5) is provided with a plurality of grooves (7), and swirl blades (4) are installed at the edges of the grooves (7).

3. The novel DPF air intake spoiler structure device according to claim 2 is characterized in that: The number of the grooves (7) is the same as that of the swirl blades (4), and the inclination angle between the swirl blades and the fixing ring (5) is 30 to 50 degrees.

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