Novel non-road anti-explosion post-processing structure

Abstract

The utility model provides a novel non-road anti-explosion post-processing structure which comprises an outer cylinder and an inner cylinder, an air inlet flange is welded to one end of the outer cylinder and one end of the inner cylinder, and an air outlet flange is welded to the other end of the outer cylinder and the other end of the inner cylinder. A spiral water diversion ring is installed between the outer cylinder and the inner cylinder, and a perforated plate is installed in the inner cylinder. The novel non-road anti-explosion post-processing structure has the advantages that the temperature of tail gas is reduced, and the phenomenon that the interior of the catalytic converter is prone to ignition and spontaneous explosion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a novel non-road explosion-proof post-treatment structure. Background Art

[0002] Non-road mobile machinery refers to in-use non-road mobile machinery that meets National I standards and below. This primarily includes, but is not limited to, excavators, bulldozers, and loaders. Diesel engines are the core power equipment for non-road machinery. Compared to gasoline engines and other power units, diesel engines offer lower fuel consumption, higher torque, and greater power, effectively meeting the power requirements of non-road machinery during operation.

[0003] Pollutants emitted from diesel engine exhaust have caused serious environmental pollution problems, and the use of catalytic purification technology to reduce pollution and emissions is one of the key technologies for diesel engine exhaust aftertreatment. The operating environment of mining engineering machinery is complex, with a wide variety of working machines and heavy diesel engine loads, resulting in high exhaust temperatures and a large amount of impurities, which makes it easy for the exhaust aftertreatment catalyst to ignite and explode.

[0004] Therefore, it is necessary to provide a new non-road explosion-proof post-processing structure to solve the above problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a novel non-road explosion-proof post-processing structure which can reduce the exhaust temperature and avoid the ignition and self-explosion inside the catalyst.

[0006] In order to solve the above technical problems, the new non-road explosion-proof after-treatment structure provided by the utility model includes: an outer cylinder and an inner cylinder, an air inlet flange is welded to one end of the outer cylinder and the inner cylinder, and an air outlet flange is welded to the other end of the outer cylinder and the inner cylinder; a spiral water diversion ring is installed between the outer cylinder and the inner cylinder, and a porous plate is installed inside the inner cylinder.

[0007] Preferably, a water inlet pipe is installed on one side of the outer cylinder, and a drain pipe is installed on the other side of the outer cylinder.

[0008] Preferably, a liner is installed on the inner wall of the inner cylinder, and a catalyst is installed inside the liner.

[0009] Preferably, the minimum spacing between adjacent water guide rings gradually increases along the direction from the air inlet flange to the air outlet flange.

[0010] Preferably, the surface of the porous plate is conical, and a plurality of exhaust holes are provided on the surface of the porous plate.

[0011] Preferably, the exhaust holes are arranged obliquely inside the porous plate, and the inclination angle of the exhaust holes gradually increases along the edge of the porous plate toward the center of the porous plate surface.

[0012] Compared with related technologies, the new non-road explosion-proof post-processing structure provided by the present invention has the following beneficial effects:

[0013] The exhaust gas of the present invention is discharged from the exhaust port through the vent hole, so that the exhaust gas of the exhaust gas is dispersed in the exhaust gas tank. The exhaust gas of the exhaust gas is discharged from the exhaust port through the vent hole, so that the exhaust gas of the exhaust gas is dispersed in the exhaust gas tank. The exhaust gas of the exhaust gas is discharged from the exhaust port through the vent hole, so that the exhaust gas of the exhaust gas is dispersed in the exhaust gas tank. The exhaust gas of the exhaust gas is dispersed in the exhaust gas tank. The exhaust gas of the exhaust gas is dispersed in the exhaust gas tank. The exhaust gas of the exhaust gas is dispersed in the exhaust gas tank. The exhaust gas of the exhaust gas is dispersed in the exhaust gas tank. The exhaust gas of the exhaust gas is dispersed in the exhaust gas tank. The minimum spacing between the water rings gradually increases along the direction of the air inlet flange toward the air outlet flange, so that the flow rate of water between the outer cylinder and the inner cylinder gradually decreases along the direction of the air inlet flange toward the air outlet flange. The closer to the exhaust gas with high temperature, the faster the water flow rate, thereby quickly taking away the heat in the exhaust gas, effectively reducing the exhaust gas temperature, and avoiding ignition and explosion inside the inner cylinder; the structure of this device is more compact and more conducive to the layout and universal structure of the whole vehicle, which can shorten the development cycle, reduce the mold and tooling development cost, and effectively control the development cost. At the same time, this device is conducive to meeting a wide variety of vehicle layouts and is also conducive to the later maintenance and disassembly of the whole vehicle; a porous plate is added to the inside of the inner cylinder for spoiler, which ensures a compact design while improving the uniformity of airflow distribution; generally, the surface temperature of the post-processing will be very high when in use. This new structure adopts an inner and outer cylinder structure, and reduces the surface temperature of the outer cylinder by circulating water when in use, which greatly reduces the heat radiation of the outer cylinder to other parts around the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural schematic diagram of a preferred embodiment of the novel non-road explosion-proof post-processing structure provided by the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the internal structure of the outer cylinder shown;

[0016] Figure 3 for Figure 2 Side view of the porous plate structure shown.

[0017] Numbers in the figure: 1. Air inlet flange, 2. Outer cylinder, 3. Air outlet flange, 4. Water inlet pipe, 5. Drain pipe, 6. Inner cylinder, 7. Perforated plate, 71. Exhaust hole, 8. Catalyst, 9. Water guide ring, 10. Gasket. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0019] See also Figures 1 to 3 , Figure 1 A structural schematic diagram of a preferred embodiment of the novel non-road explosion-proof post-processing structure provided by the utility model; Figure 2 for Figure 1 Schematic diagram of the internal structure of the outer cylinder shown; Figure 3 for Figure 2The side view of the porous plate structure shown. The new non-road explosion-proof post-processing structure includes: an outer cylinder 2 and an inner cylinder 6, one end of the outer cylinder 2 and the inner cylinder 6 are welded to an air inlet flange 1, and the other end of the outer cylinder 2 and the inner cylinder 6 are welded to an air outlet flange 3; a spiral water guide ring 9 is installed between the outer cylinder 2 and the inner cylinder 6, and the minimum spacing between adjacent water guide rings 9 gradually increases along the direction from the air inlet flange 1 to the air outlet flange 3; and a porous plate 7 is installed inside the inner cylinder 6; the surface of the porous plate 7 is conical, and the surface of the porous plate 7 is provided with multiple The exhaust hole 71 is arranged obliquely inside the porous plate 7, and the inclination angle of the exhaust hole 71 gradually increases along the edge of the porous plate 7 toward the center of the surface of the porous plate 7; when the exhaust gas of the diesel engine enters the interior of the inner cylinder 6 through the intake flange 1, the exhaust gas contacts the porous plate 7, and the exhaust gas is discharged through the exhaust hole 71, so that the gas is dispersed inside the inner cylinder 6; the surface of the porous plate 71 is conical, which facilitates the exhaust gas to the edge of the porous plate 7 and the inner wall of the inner cylinder 6 The exhaust holes 71 are tilted inside the porous plate 7, and the tilt angle of the exhaust holes 71 gradually increases along the edge of the porous plate 7 toward the center of the surface of the porous plate 7, so that the exhaust gas discharged from the exhaust holes 7 moves toward the inner wall of the inner cylinder 6. At this time, cooling water flows outside the inner cylinder 6, and the water takes away the heat in the exhaust gas, and the exhaust gas moves toward the inner wall of the inner cylinder 6, which makes it easier for the water to take away the heat in the exhaust gas and speed up the cooling efficiency of the exhaust gas. A spiral water guide ring 9 is installed between the inner cylinders 6, so that water spirals along the water guide ring 9 to quickly take away the heat in the exhaust gas, and the minimum spacing between adjacent water guide rings 9 gradually increases along the air inlet flange 1 toward the air outlet flange 3, so that the flow rate of water between the outer cylinder 2 and the inner cylinder 6 gradually decreases along the air inlet flange 1 toward the air outlet flange 3. The closer to the exhaust gas with high temperature, the faster the water flow rate, thereby quickly taking away the heat in the exhaust gas, effectively reducing the exhaust gas temperature, and avoiding ignition and explosion inside the inner cylinder 6.

[0020] A water inlet pipe 4 is installed on one side of the outer tube 2, and a drain pipe 5 is installed on the other side of the outer tube 2, so that cooling water can enter between the outer tube 2 and the inner tube 3 through the water inlet pipe 4 and then be discharged from the drain pipe 5 to reduce the temperature inside the inner tube 6.

[0021] A liner 10 is installed on the inner wall of the inner cylinder 6, and a catalyst 8 is installed inside the liner 10. In order to allow the cooled exhaust gas to contact the catalyst 8, the catalyst 8 catalytically decomposes harmful substances in the exhaust gas to reduce air pollution.

[0022] The above description is merely 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 description 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 new type of non-road explosion-proof post-processing structure, characterized in that: include: An outer cylinder (2) and an inner cylinder (6), wherein one end of the outer cylinder (2) and the inner cylinder (6) are welded to an air inlet flange (1), and the other end of the outer cylinder (2) and the inner cylinder (6) are welded to an air outlet flange (3); A spiral water guide ring (9) is installed between the outer cylinder (2) and the inner cylinder (6), and a porous plate (7) is installed inside the inner cylinder (6).

2. The novel non-road explosion-proof post-processing structure according to claim 1 is characterized in that: A water inlet pipe (4) is installed on one side of the outer cylinder (2), and a drain pipe (5) is installed on the other side of the outer cylinder (2).

3. The novel non-road explosion-proof post-processing structure according to claim 1 is characterized in that: A liner (10) is installed on the inner wall of the inner cylinder (6), and a catalyst (8) is installed inside the liner (10).

4. The novel non-road explosion-proof post-processing structure according to claim 1 is characterized in that: The minimum spacing between adjacent water guide rings (9) gradually increases in a direction from the air inlet flange (1) toward the air outlet flange (3).

5. The novel non-road explosion-proof post-processing structure according to claim 1 is characterized in that: The surface of the porous plate (7) is conical, and a plurality of exhaust holes (71) are provided on the surface of the porous plate (7).

6. The novel non-road explosion-proof post-processing structure according to claim 5 is characterized in that: The exhaust holes (71) are arranged obliquely inside the porous plate (7), and the inclination angle of the exhaust holes (71) gradually increases along the edge of the porous plate (7) toward the center of the surface of the porous plate (7).

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