Novel DPF catalyst convenient to disassemble

Abstract

The utility model provides a novel DPF catalyst convenient to disassemble. The novel DPF catalyst convenient to disassemble comprises a heat insulation layer. The heat insulation layer is fixed on the outer side wall of the cylinder body, the cylinder body comprises a cylinder pipe, a hump and a turnup, the turnup is arranged at one end of the cylinder pipe, the turnup is in a horn shape, the hump is arranged at the other end of the cylinder pipe, and the hump is in a convex shape; the fixing structure comprises clamping hoops, and the clamping hoops are installed on the side walls of the two ends of the bobbin in a clamped mode; the DPF catalytic converter is fixed to the interior of the cylinder pipe, and the DPF catalytic converter is fixed to the interior of the cylinder pipe; the external connection pipes are mounted at the two ends of the bobbin through the hoops; the novel DPF catalytic converter convenient to disassemble has the advantages that the manufacturing cost is saved, the integrity of parts is enhanced, and the sealing performance of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine exhaust post-processing, in particular to a novel DPF catalyst which is easy to disassemble. Background Art

[0002] Existing DPF catalysts generally consist of a cylinder, a flanged tube, a hump tube, and a V-shaped clamp gasket. The structure is formed by connecting the cylinder-hump tube welded assembly and the cylinder-flange tube welded assembly via a V-shaped clamp.

[0003] The current DPF catalyst introduces a welding process during assembly, which not only increases manufacturing costs but also impairs the integrity of the parts. Weld spots appear on the surface of the cylinder, resulting in an uneven surface, which leads to poor sealing performance of the product. Increased torque is required to tighten the clamp, which may cause damage to the clamp due to excessive torque and is also a waste of manpower.

[0004] Therefore, it is necessary to provide a new type of DPF catalyst that is easy to disassemble to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a novel DPF catalyst which is easy to disassemble and can save manufacturing cost, enhance the integrity of parts and enhance the sealing performance of the device.

[0006] In order to solve the above technical problems, the utility model provides a new type of DPF catalyst that is easy to disassemble, including: a heat insulation layer; a cylinder, the heat insulation layer is fixed to the outer side wall of the cylinder, the cylinder includes a cylinder, a hump and a flange, one end of the cylinder is provided with the flange, the shape of the flange is trumpet-shaped, and the other end of the cylinder is provided with the hump, and the shape of the hump is convex; a fixing structure, the fixing structure includes a clamp, the clamp is clamped and installed on the side walls at both ends of the cylinder; a DPF catalyst, the DPF catalyst is fixed to the inside of the cylinder; an external pipe, the external pipe is installed at both ends of the cylinder through the clamp.

[0007] Preferably, the inner side wall of the clamp is concave, and the side wall cross-section of the clamp is larger than the side wall cross-section of the hump. The clamp is annular, and one end of the clamp is not closed.

[0008] , The novel easily disassembled DPF catalyst according to claim is characterized in that the fixing structure further includes fixing bolts, and the opening of the clamp is connected and fixed by the fixing bolts.

[0009] , The novel easily disassembled DPF catalyst according to claim is characterized in that the external tubes are installed at both ends of the cylinder, the side wall of one of the external tubes is provided with a trumpet-shaped flange, and the side wall of the other external tube is provided with the hump.

[0010] , The novel easily disassembled DPF catalyst according to claim is characterized in that the left end of the barrel is connected to the flange of the side wall of the external pipe through the hump, and the flange at the right end of the barrel is connected to the hump of the side wall of the external pipe, and the clamp is engaged with the connection between the barrel and the external pipe.

[0011] Compared with the related art, the novel DPF catalyst provided by the present invention that is easy to disassemble has the following beneficial effects:

[0012] The utility model provides a novel DPF catalyst that is easy to disassemble. Firstly, under the premise that the outer dimensions of the product are not affected, flanges and humps are provided at both ends of the cylinder. The cylinder is in an integral state and does not use welding technology, thereby improving the strength and consistency of the parts. Since the new technical solution cancels the welding technology, the deformation factors generated during welding are reduced. The clamp used for connection can be locked with normal torque to ensure the sealing performance between the external pipe and the cylinder, thus protecting the parts and saving manpower. Compared with the original solution, the new solution reduces the number of parts and can reduce the overall cost. This structure has the advantages of saving manufacturing costs, strengthening the integrity of the parts, and strengthening the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a preferred embodiment of a novel, easily disassembled DPF catalyst provided by the present invention;

[0014] Figure 2 for Figure 1 The structural diagram of the overall cross section is shown in the front view;

[0015] Figure 3 for Figure 2 The enlarged structural diagram of part A is shown;

[0016] Figure 4 for Figure 2 The enlarged structural diagram of part B is shown;

[0017] Figure 5 for Figure 1 The structural diagram of the overall shape of the external tube is shown.

[0018] Numbers in the figure: 1. external tube, 2. cylinder, 21. bobbin, 22. hump, 23. flange, 3. fixing structure, 31. clamp, 32. fixing bolt, 4. DPF catalyst, 5. thermal insulation layer. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0020] See also Figures 1 to 4 , Figure 1 A schematic structural diagram of a preferred embodiment of a novel, easily disassembled DPF catalyst provided by the present invention; Figure 2 for Figure 1 The structural diagram of the overall cross section is shown in the front view; Figure 3 for Figure 2 The enlarged structural diagram of part A is shown; Figure 4 for Figure 2 The enlarged structural diagram of part B is shown in the figure. Figure 5 for Figure 1 The schematic structural diagram of the overall shape of the external tube is shown, in which the new DPF catalyst that is easy to disassemble includes: a heat insulation layer 5; a cylinder 2, the outer wall of the cylinder 2 is fixed with the heat insulation layer 5, the cylinder 2 includes a barrel 21, a hump 22 and a flange 23, one end of the barrel 21 is provided with the flange 23, the shape of the flange 23 is trumpet-shaped, the other end of the barrel 21 is provided with the hump 22, and the shape of the hump 22 is convex; a fixing structure 3, the fixing structure 3 includes a clamp 31, the clamp 31 is clamped and installed on the side walls at both ends of the barrel 21; a DPF catalyst 4, the DPF catalyst 4 is fixed to the inside of the barrel 21; an external tube 1, the external tube 1 is installed at both ends of the barrel 21 through the clamp 31.

[0021] In the specific implementation process, Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the inner side wall of the clamp 31 is concave, and the side wall cross-section of the clamp 31 is larger than the side wall cross-section of the hump 22. The clamp 31 is annular, and one end of the clamp 31 is not closed; the external tube 1 is installed at both ends of the cylinder 2, one of the side walls of the external tube 1 is provided with a trumpet-shaped flange, and the side wall of the other external tube 1 is provided with the hump 22; the left end of the cylinder 21 is connected to the flange 23 of the side wall of the external tube 1 through the hump 22, and the The flange 23 at the right end of the bobbin 21 is connected to the hump 22 on the side wall of the external tube 1, and the clamp 31 is engaged with the connection between the bobbin 21 and the external tube 1; it is convenient for the bobbin 21 to be connected to the external tube 1 through the flange 23 and the hump 22, and then the connection node between the bobbin 21 and the external tube 1 is fixed by the clamp 31, and then the seal between the bobbin 21 and the external tube 1 is made tighter under the engagement of the groove of the clamp 31.

[0022] In the specific implementation process, Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the fixing structure 3 also includes a fixing bolt 32, and the opening of the clamp 31 is connected and fixed by the fixing bolt 32; it is convenient to fix the two ends of the clamp 31 by the fixing bolt 32, so that the clamp 31 can firmly fix the connection node between the bobbin 21 and the external tube 1.

[0023] The working principle of the novel DPF catalyst provided by the utility model which is easy to disassemble is as follows:

[0024] When in use, first, the two ends of the barrel 21 are connected to the external pipe 1 respectively, so that the flange 23 provided at one end of the external pipe 1 is connected to the hump 22 provided at the left end of the barrel 21, and the flange 23 provided at the right end of the barrel 21 is connected to one end of the hump 22 provided at one end of the other external pipe 1, so that the two ends of the through pipe are connected with the two external pipes 1 respectively, and then the connection node of the barrel 21 and the external pipe 1 are engaged by the clamp 31, and the clamp 31 is fixed by the fixing bolt 32, so that the connection point between the external pipe 1 and the barrel 21 is tightened and sealed by the clamp 31, so that the exhaust gas will not leak through the connection node between the through pipe and the external pipe 1, so that the exhaust gas can directly enter the DPF catalyst 4 for conversion, converting the particulate matter and harmful gases in the exhaust gas, thereby reducing pollution to the environment and harm to human health. This structure has the advantages of saving manufacturing costs, enhancing the integrity of components, and enhancing the sealing of the device.

[0025] Compared with the related art, the novel DPF catalyst provided by the present invention that is easy to disassemble has the following beneficial effects:

[0026] The utility model provides a novel DPF catalyst which is easy to disassemble. Firstly, in this device, flanges and humps are provided at both ends of the cylinder without affecting the outer dimensions of the product. The cylinder is in an integral state and does not use welding technology, which improves the strength and consistency of the parts. Since the welding technology is eliminated in the new technical solution, the deformation factors generated during welding are reduced. The clamp 31 used for connection can be tightened with normal torque to ensure the sealing performance between the external pipe 1 and the cylinder 2, which protects the parts and saves manpower. Compared with the original solution, the new solution reduces the number of parts and can reduce the overall cost. This structure has the advantages of saving manufacturing costs, strengthening the integrity of the parts, and strengthening the sealing performance of the device.

[0027] 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 DPF catalyst that is easy to disassemble, characterized in that: include; Thermal insulation layer (5); A cylinder (2), the outer wall of the cylinder (2) is fixed with the heat insulation layer (5), the cylinder (2) comprises a cylinder (21), a hump (22) and a flange (23), one end of the cylinder (21) is provided with the flange (23), the shape of the flange (23) is trumpet-shaped, and the other end of the cylinder (21) is provided with the hump (22), and the shape of the hump (22) is convex; A fixing structure (3), the fixing structure (3) comprising a clamp (31), the clamp (31) being mounted on the side walls at both ends of the barrel (21); A DPF catalyst (4), wherein the DPF catalyst (4) is fixed inside the barrel (21); An external tube (1) is installed at both ends of the bobbin (21) through the clamp (31).

2. The novel easily disassembled DPF catalyst according to claim 1 is characterized in that: The inner side wall of the clamp (31) is concave, and the side wall cross-section of the clamp (31) is larger than the side wall cross-section of the hump (22). The clamp (31) is annular, and one end of the clamp (31) is not closed.

3. The novel easily disassembled DPF catalyst according to claim 1 is characterized in that: The fixing structure (3) further comprises a fixing bolt (32), and the opening of the clamp (31) is connected and fixed by the fixing bolt (32).

4. The novel easily disassembled DPF catalyst according to claim 1 is characterized in that: The external tubes (1) are installed at both ends of the cylinder (2), wherein the side wall of one of the external tubes (1) is provided with a trumpet-shaped flange, and the side wall of the other external tube (1) is provided with the hump (22).

5. The novel easily disassembled DPF catalyst according to claim 1 is characterized in that: The left end of the bobbin (21) is connected to the flange (23) of the side wall of the external tube (1) through the hump (22), and the flange (23) at the right end of the bobbin (21) is connected to the hump (22) of the side wall of the external tube (1), and the clamp (31) is engaged at the connection between the bobbin (21) and the external tube (1).

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