Tail gas after-treatment device and assembly tool
By covering the outer periphery of the catalyst carrier of the exhaust gas aftertreatment system with a multi-layer liner structure, the problem of high temperature effects on the metal outer cylinder is solved, achieving thermal insulation effect and cost reduction, while simplifying the assembly process.
Patent Information
- Application Number
- CN202421223681.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-30
AI Technical Summary
In the catalyst carrier packaging process of the existing exhaust gas aftertreatment system, the high temperature of the metal outer cylinder will affect the external accessories, resulting in increased production costs, and the assembly steps and parts types are added.
By covering the outer periphery of the catalyst carrier with a first liner and covering the outer periphery of the first liner with a second liner, a multi-layer liner structure is formed to reduce the impact of heat conduction on the outside of the outer cylinder, thereby eliminating the impact on the outside of the outer cylinder. The need for thermal pads and heat shields.
It achieves effective heat insulation and reduces costs without adding additional heat insulation structures, simplifies the assembly process, and avoids misalignment of the first liner and the second liner during the installation process.
Smart Images
Figure CN222376579U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tail gas treatment, in particular to a tail gas post-treatment device and an assembly tool. Background Art
[0002] The packaging process of the catalyst carrier of the engine after-treatment system is generally to wrap the carrier with a single-layer liner, and then insert the whole into the metal cylinder to form a packaging unit. Since the temperature of the metal outer cylinder is high, it will affect the external accessories and even melt some external accessories. It is necessary to add thermal insulation cotton and thermal insulation cover structures outside the cylinder. This increases the number of parts. The thermal insulation cover often requires a corresponding mold. The production needs to add assembly and welding tooling for the thermal insulation cover, increase the assembly and welding steps, and increase the production cost. Utility Model Content
[0003] The utility model aims to provide an exhaust gas post-processing device and an assembly tool, which can reduce costs and facilitate assembly while achieving heat insulation.
[0004] The embodiment of the utility model is achieved as follows:
[0005] In a first aspect, the utility model provides an exhaust gas post-treatment device, comprising an outer cylinder, a catalyst carrier, a first liner and a second liner;
[0006] The first liner is wound around the outer periphery of the catalyst carrier, and the second liner is wound around the outer periphery of the first liner;
[0007] The length of the first liner after unfolding is less than the length of the second liner after unfolding;
[0008] The heights of the first gasket and the second gasket are both smaller than the axial dimension of the catalyst carrier, so that at least one of the two ends of the catalyst carrier is exposed outside the first gasket and the second gasket;
[0009] The outer cylinder is arranged on the outer periphery of the second gasket.
[0010] In an optional embodiment, the first liner has a first end and a second end in the length direction after being unfolded;
[0011] A first coupling groove is recessed at the first end toward the second end;
[0012] The second end is provided with a first combining block protruding in a direction away from the first end;
[0013] When the first liner is wound around the outer periphery of the catalyst carrier, the first coupling block is inserted into the first coupling groove.
[0014] In an optional embodiment, the second liner has a third end and a fourth end in the length direction after being unfolded;
[0015] The third end is provided with a second coupling groove in a direction toward the fourth end;
[0016] The fourth end is provided with a second combining block protruding in a direction away from the third end;
[0017] When the second liner is wound around the outer periphery of the first liner, the second combining block is inserted into the second combining groove.
[0018] In an optional embodiment, the shapes of the first coupling groove and the second coupling groove are both polygonal or arc-shaped.
[0019] In an optional embodiment, the length of the first liner after unfolding corresponds to the circumference of the catalyst carrier;
[0020] The length of the second liner after unfolding is greater than the circumference of the catalyst carrier.
[0021] In a second aspect, the utility model provides an assembly tool for assembling an exhaust gas after-treatment device according to any one of the aforementioned embodiments, the assembly tool comprising a circular push plate;
[0022] A ring platform is convexly provided on the outer periphery of the circular push plate;
[0023] The inner diameter of the ring platform corresponds to the outer diameter of the catalyst carrier, so that the portion of the catalyst carrier that exceeds the height of the first liner and the second liner can be inserted into the inner part of the ring platform;
[0024] The end of the ring platform is used to abut against the end plates of the first liner and the second liner;
[0025] The diameter of the circular push plate is smaller than the inner diameter of the outer cylinder.
[0026] In an optional embodiment, the assembly tool further includes a push rod, which is arranged in the axial direction of the circular push plate and away from one side of the ring platform.
[0027] In an optional embodiment, the assembly tool further includes a transition tool;
[0028] The transition tooling has a through hole, and the through hole is configured to place the catalyst carrier wound with the first liner and the second liner;
[0029] One end of the through hole is configured to correspond to the end of the outer cylinder, and the other end is configured to allow the circular push plate to extend therein, so as to push the catalyst carrier wound with the first liner and the second liner into the outer cylinder.
[0030] In an optional embodiment, the through hole has a first side and a second side;
[0031] The first side is configured to correspond to the outer cylinder, and the second side is configured to install the catalyst carrier wound with the first gasket and the second gasket into the through hole and to allow the circular push plate to extend therein;
[0032] The diameter of the first side is configured to correspond to the inner diameter of the outer cylinder;
[0033] The second side has a diameter greater than a diameter of the first end;
[0034] The diameter of the second side gradually decreases toward the first end to form a taper.
[0035] In an optional embodiment, the assembly tool further includes a fixing tool;
[0036] The fixing fixture is configured to fix the outer cylinder so that an end of the outer cylinder abuts against an end of the transition fixture and an axis of the outer cylinder is colinear with an axis of the through hole.
[0037] The beneficial effects of the exhaust gas aftertreatment device and assembly tooling provided by the embodiment of the utility model include:
[0038] The present application wraps the first liner on the outer periphery of the catalyst carrier and the second liner on the outer periphery of the first liner, so that the first liner and the second liner can be better insulated, so that there is no need to set a heat insulation pad and a heat insulation cover on the outer periphery of the outer cylinder, thereby reducing costs. The provided assembly tool can conveniently push the catalyst carrier wrapped with the first liner and the second liner into the outer cylinder, and most importantly, it can avoid the first liner and the second liner from being misaligned during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS
[0039] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0040] Figure 1 A schematic cross-sectional view of an exhaust gas aftertreatment device provided by an embodiment of the utility model;
[0041] Figure 2 A schematic structural diagram of an exhaust gas aftertreatment device provided by an embodiment of the utility model in which a first liner is in an expanded state;
[0042] Figure 3 A schematic structural diagram of the exhaust gas aftertreatment device provided by an embodiment of the utility model in which the second liner is in an expanded state;
[0043] Figure 4 A schematic diagram of the structure of the assembly tool provided in the embodiment of the utility model;
[0044] Figure 5 A schematic cross-sectional view of an assembly tool provided in an embodiment of the utility model during assembly;
[0045] Figure 6 A schematic structural diagram of a circular push plate of an assembly tool provided in an embodiment of the utility model;
[0046] Figure 7 A schematic cross-sectional structural diagram of a transition tooling of an assembly tooling provided in an embodiment of the utility model.
[0047] Icons: 100-exhaust after-treatment device; 110-outer cylinder; 130-catalyst carrier; 150-first gasket; 151-first coupling groove; 153-first coupling block; 155-first cut corner; 170-second gasket; 171-second coupling block; 173-second coupling groove; 175-second cut corner; 300-assembly tooling; 310-circular push plate; 330-ring platform; 350-push rod; 370-transition tooling; 371-through hole; 373-first side; 375-second side; 390-fixing tooling. DETAILED DESCRIPTION
[0048] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0051] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0052] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0053] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0054] First embodiment
[0055] Please refer to Figures 1 to 3 The present embodiment provides an exhaust gas aftertreatment device 100, which can better insulate heat, so that there is no need to set a heat insulation pad and a heat insulation cover on the outside of the outer cylinder 110, thereby reducing costs and facilitating assembly.
[0056] In this embodiment, the exhaust gas aftertreatment device 100 includes an outer cylinder 110, a catalyst carrier 130, a first gasket 150 and a second gasket 170. The first gasket 150 is wound around the outer periphery of the catalyst carrier 130, and the second gasket 170 is wound around the outer periphery of the first gasket 150. The length of the first gasket 150 after unfolding is less than the length of the second gasket 170 after unfolding. The heights of the first gasket 150 and the second gasket 170 are both less than the axial dimension of the catalyst carrier 130, so that at least one of the two ends of the catalyst carrier 130 is exposed to the first gasket 150 and the second gasket 170. The outer cylinder 110 is arranged at the outer periphery of the second gasket 170.
[0057] In this embodiment, the first liner 150 is covered on the outer periphery of the catalyst carrier 130, and the second liner 170 is covered on the outer periphery of the first liner 150, so that the first liner 150 and the second liner 170 can be better insulated, thereby eliminating the need to provide insulation pads and insulation covers on the outer periphery of the outer tube 110, thereby reducing costs.
[0058] It should be noted that the first liner 150 and the second liner 170 are made of the same material and have the same thickness, which has a buffering and heat-insulating effect, thereby preventing the catalyst carrier 130 from being broken when impacted by an external force. Of course, in some other embodiments of the present application, the thickness of the first liner 150 and the second liner 170 may also be different, as long as they can meet the preset heat insulation requirements.
[0059] In this embodiment, both ends of the catalyst carrier 130 are exposed to the outside of the first liner 150 and the second liner 170. Of course, in some other embodiments of the present application, only one end may be exposed to the outside.
[0060] In this embodiment, the first gasket 150 has a first end and a second end in the length direction after being unfolded. The first end is provided with a first coupling groove 151 in a direction toward the second end. The second end is provided with a first coupling block 153 in a direction away from the first end. When the first gasket 150 is wound around the outer periphery of the catalyst carrier 130, the first coupling block 153 is inserted into the first coupling groove 151.
[0061] In this embodiment, by providing the first coupling groove 151 and the first coupling block 153, the two ends of the first gasket 150 can be inserted into each other after being wound, thereby avoiding misalignment during installation.
[0062] Please refer to Figures 1 to 3 In this embodiment, the second liner 170 has a third end and a fourth end in the length direction after being unfolded. The third end is provided with a second coupling groove 173 in a direction toward the fourth end. The fourth end is provided with a second coupling block 171 in a direction away from the third end. When the second liner 170 is rolled around the outer periphery of the first liner 150, the second coupling block 171 is inserted into the second coupling groove 173.
[0063] In this embodiment, the second coupling groove 173 and the second coupling block 171 are provided, and the two are plugged in, so as to ensure that the two ends of the second gasket 170 can be embedded with each other after being wound, thereby avoiding misalignment during installation.
[0064] In this embodiment, the first coupling groove 151 and the second coupling groove 173 are both rectangular, and the first coupling block 153 and the second coupling block 171 are also rectangular, and the shapes of the two are matched and complementary.
[0065] In some other embodiments of the present application, the shapes of the first coupling groove 151 and the second coupling groove 173 may also be other polygonal or arc shapes, such as triangle, semicircle, etc.
[0066] In this embodiment, the length of the first liner 150 after unfolding corresponds to the circumference of the catalyst carrier 130. The length of the second liner 170 after unfolding is greater than the circumference of the catalyst carrier 130. In this way, better wrapping can be achieved.
[0067] Of course, in some other embodiments of the present application, the first end and the second end of the first liner 150 may also be connected by other means, such as bonding, clamping, etc. The third end and the fourth end of the second liner 170 may also be connected by other means, such as bonding, clamping, etc.
[0068] In this embodiment, both ends of the first liner 150 are provided with first cut corners 155. After the first liner 150 is wound around the outer periphery of the catalyst carrier 130, the first cut corners 155 at both ends can be complementary and spliced. Providing the first cut corners 155 can better achieve splicing, so that the two ends after winding can overlap each other.
[0069] Please refer to Figures 1 to 3 In this embodiment, the second gasket 170 is provided with a second cut corner 175 at both ends. After the second gasket 170 is wound around the outer periphery of the first gasket 150, the second cut corners 175 at both ends can be complementary and spliced. The second cut corner 175 can be provided to better achieve splicing, so that the two ends after winding can overlap each other.
[0070] In some embodiments, the first cutting angle 155 and the second cutting angle 175 may be 45°. This ensures that after cutting 45°, the remaining angle is also 45°. One cut can cut two cutting angles.
[0071] Of course, in the present application, the angles of the first cutting angle 155 and the second cutting angle 175 may also be other angles, such as 30°, 60°, etc.
[0072] In summary, the exhaust gas after-treatment device 100 provided in the present application improves the heat insulation capability by adding a layer of the second liner 170 , and the existing heat insulation cotton and heat insulation cover arranged outside the outer cylinder 110 can be removed, thereby reducing the overall cost.
[0073] Second embodiment
[0074] Please refer to Figures 1 to 3 The inventors found that when the first liner 150 and the second liner 170 are arranged on the outside of the catalyst carrier 130, the first liner 150 and the second liner 170 may deviate from each other during assembly, resulting in an uneven end surface and affecting subsequent processes.
[0075] Please refer to Figures 1 to 7 In order to solve the above problems, the present embodiment provides an assembly tool 300, which can conveniently push the catalyst carrier 130 wrapped with the first liner 150 and the second liner 170 into the outer tube 110, and can avoid misalignment between the first liner 150 and the second liner 170.
[0076] In this embodiment, the assembly tool 300 includes a circular push plate 310. A ring platform 330 is protruded from the outer periphery of the circular push plate 310. The inner diameter of the ring platform 330 corresponds to the outer diameter of the catalyst carrier 130, so that the portion of the catalyst carrier 130 that exceeds the height of the first gasket 150 and the second gasket 170 can be inserted into the inside of the ring platform 330. The end of the ring platform 330 is used to abut against the end plates of the first gasket 150 and the second gasket 170. The diameter of the circular push plate 310 is smaller than the inner diameter of the outer cylinder 110.
[0077] By setting the circular push plate 310, the ring platform 330 set on the circular push plate 310 can be sleeved on the outer periphery of the catalyst carrier 130, and abut against the ends of the first liner 150 and the second liner 170, so that the catalyst carrier 130, the first liner 150 and the second liner 170 can be pushed synchronously, thereby avoiding misalignment between the first liner 150 and the second liner 170.
[0078] Furthermore, the assembly tool 300 further includes a push rod 350, which is arranged in the axial direction of the circular push plate 310 and away from the side of the ring stage 330. In this embodiment, the push rod 350 is installed on the circular push plate 310, so that it can be pushed conveniently.
[0079] In this embodiment, a plurality of through holes are provided at the center of the circular push plate 310 , and screws pass through the through holes and are connected to the push rod 350 , so that the push rod 350 and the circular push plate 310 are fixedly connected.
[0080] Furthermore, the outer diameter of the circular push plate 310 is slightly smaller than the inner diameter of the outer cylinder 110 .
[0081] Please refer to Figures 1 to 7 In this embodiment, the assembly tool 300 further includes a transition tool 370. The transition tool 370 has a through hole 371, and the through hole 371 is configured to place the catalyst carrier 130 wound with the first liner 150 and the second liner 170. One end of the through hole 371 is configured to correspond to the end of the outer cylinder 110, and the other end is configured to allow the circular push plate 310 to extend therein, so as to push the catalyst carrier 130 wound with the first liner 150 and the second liner 170 into the outer cylinder 110.
[0082] Further, the through hole 371 has a first side 373 and a second side 375 opposite to each other. The first side 373 is configured to correspond to the outer cylinder 110, and the second side 375 is configured to install the catalyst carrier 130 wound with the first liner 150 and the second liner 170 into the through hole 371 and to allow the circular push plate 310 to extend therein. The diameter of the first side 373 is configured to correspond to the inner diameter of the outer cylinder 110. The diameter of the second side 375 is larger than the diameter of the first side 373, and the diameter of the second side 375 gradually decreases toward the first side 373 to form a taper.
[0083] The opening diameter of the second side 375 is set to be larger than the diameter of the first side 373, so that the catalyst carrier 130 wrapped with the first liner 150 and the second liner 170 can be easily installed in the through hole 371. The diameter of the first side 373 is smaller, and the second side 375 is gradually reduced toward the first end 373 to form a taper, so that the first liner 150 and the second liner 170 are compressed in the thickness direction during the process of pushing the catalyst carrier 130 wrapped with the first liner 150 and the second liner 170 from the second side 375 to the first side 373.
[0084] Furthermore, the assembly tool 300 further includes a fixing tool 390 . The fixing tool 390 is configured to fix the outer cylinder 110 so that the end of the outer cylinder 110 abuts against the end of the transition tool 370 and the axis of the outer cylinder 110 is colinear with the axis of the through hole 371 .
[0085] It should be noted that the fixing fixture 390 is disposed on one side of the first end 373 of the transition fixture 370 , and the fixing fixture 390 is provided with an engaging groove, and the outer cylinder 110 can be engaged in the engaging groove, thereby achieving fixation of the outer cylinder 110 .
[0086] When using:
[0087] Step 1: Install the outer cylinder 110 to the fixing fixture 390;
[0088] Step 2: Wrap the first liner 150 and the second liner 170 around the outer periphery of the catalyst carrier 130;
[0089] Step 3: Install the catalyst carrier 130 wrapped with the first liner 150 and the second liner 170 in the through hole 371 through the second side 375;
[0090] Step 4: Extend the circular push plate 310 from the second side 375 into the transition tooling 370 , and push it into the outer cylinder 110 as a whole.
[0091] In summary, the assembly tool 300 provided in this embodiment can conveniently push the catalyst carrier 130 wrapped with the first liner 150 and the second liner 170 into the outer cylinder 110 and avoid misalignment between the first liner 150 and the second liner 170 .
[0092] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An exhaust gas post-treatment device, characterized in that: It comprises an outer cylinder (110), a catalyst carrier (130), a first liner (150) and a second liner (170); The first gasket (150) is wound around the outer periphery of the catalyst carrier (130), and the second gasket (170) is wound around the outer periphery of the first gasket (150); The length of the first liner (150) after unfolding is smaller than the length of the second liner (170) after unfolding; The heights of the first liner (150) and the second liner (170) are both smaller than the axial dimension of the catalyst carrier (130), so that at least one of the two ends of the catalyst carrier (130) is exposed outside the first liner (150) and the second liner (170); The outer cylinder (110) is disposed on the outer periphery of the second gasket (170).
2. The exhaust gas post-treatment device according to claim 1, characterized in that: The first liner (150) has a first end and a second end in a length direction after being unfolded; A first coupling groove (151) is recessedly provided at the first end in a direction toward the second end; A first combining block (153) is protruded from the second end in a direction away from the first end; When the first gasket (150) is wound around the outer periphery of the catalyst carrier (130), the first coupling block (153) is inserted into the first coupling groove (151).
3. The exhaust gas post-treatment device according to claim 2, characterized in that: The second liner (170) has a third end and a fourth end in the length direction after being unfolded; The third end is provided with a second coupling groove (173) in a direction toward the fourth end; The fourth end is provided with a second combining block (171) protruding in a direction away from the third end; When the second liner (170) is wound around the outer periphery of the first liner (150), the second combining block (171) is inserted into the second combining groove (173).
4. The exhaust gas post-treatment device according to claim 3, characterized in that: The first combining groove (151) and the second combining groove (173) are both polygonal or arc-shaped.
5. The exhaust gas post-treatment device according to any one of claims 1 to 4, characterized in that: The length of the first liner (150) after unfolding corresponds to the circumference of the catalyst carrier (130); The length of the second liner (170) after unfolding is greater than the circumference of the catalyst carrier (130).
6. An assembly tool for assembling the exhaust gas after-treatment device according to any one of claims 1 to 5, characterized in that: The assembly tool comprises a circular push plate (310); The outer periphery of the circular push plate (310) is convexly provided with a ring platform (330); The inner diameter of the ring platform (330) corresponds to the outer diameter of the catalyst carrier (130), so that the portion of the catalyst carrier (130) that exceeds the height of the first liner (150) and the second liner (170) can be inserted into the inner part of the ring platform (330); The end of the ring platform (330) is configured to abut against the end plates of the first liner (150) and the second liner (170); The diameter of the circular push plate (310) is smaller than the inner diameter of the outer cylinder (110).
7. The assembly tool according to claim 6, characterized in that: The assembly tool also includes a push rod (350), which is arranged in the axial direction of the circular push plate (310) and is located on a side away from the annular platform (330).
8. The assembly tool according to claim 6 or 7, characterized in that: The assembly tool also includes a transition tool (370); The transition tool (370) has a through hole (371), and the through hole (371) is configured to place the catalyst carrier (130) wound with the first liner (150) and the second liner (170); One end of the through hole (371) is configured to correspond to the end of the outer cylinder (110), and the other end is configured to allow the circular push plate (310) to extend therein so as to push the catalyst carrier (130) wound with the first liner (150) and the second liner (170) into the outer cylinder (110).
9. The assembly tool according to claim 8, characterized in that: The through hole (371) has a first side (373) and a second side (375) opposite to each other; The first side (373) is configured to correspond to the outer cylinder (110), and the second side (375) is configured to install the catalyst carrier (130) wound with the first gasket (150) and the second gasket (170) into the through hole (371) and to allow the circular push plate (310) to extend therein; The diameter of the first side (373) is configured to correspond to the inner diameter of the outer cylinder (110); The diameter of the second side (375) is greater than the diameter of the first side (373); The diameter of the second side (375) gradually decreases toward the first side (373) to form a taper.
10. The assembly tool according to claim 8, characterized in that: The assembly tool also includes a fixing tool (390); The fixing fixture (390) is configured to fix the outer cylinder (110) so that an end of the outer cylinder (110) abuts against an end of the transition fixture (370) and an axis of the outer cylinder (110) is colinear with an axis of the through hole (371).