Engine postprocessor structure and nozzle mounting structure

Abstract

The utility model discloses an engine postprocessor structure and a nozzle mounting structure, the nozzle mounting structure is arranged on a postprocessor body, the postprocessor body is provided with a nozzle mounting hole for mounting a nozzle, and the nozzle mounting hole is of a bowl-shaped structure; a nozzle receding hole is formed in the middle of the third heat insulation cotton, the third heat insulation cotton is installed in the nozzle installation hole, and the periphery of the third heat insulation cotton abuts against the inner side wall of the nozzle installation hole. The first cover plate is mounted outside the nozzle mounting hole through a bolt, and a receding hole is formed in the middle of the first cover plate to adapt to the structure of the nozzle. The utility model has the advantages of compact structure, good heat insulation effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of engine post-processing, in particular to an engine post-processor structure and a nozzle installation structure. Background Art

[0002] In the engine compartment of the harvester, a large amount of heat generated by the engine is discharged through the exhaust system. The post-processor in the exhaust system serves as an exhaust gas discharge channel and purifies the exhaust gas. Since the temperature of the gas discharged by the engine is very high, the heat of the high-temperature airflow will radiate to the surrounding parts through the metal shell of the post-processor body. In order to avoid overheating, traditional post-processors are usually installed at a certain distance from the vehicle body, or a heat shield is added. The heat shield is a metal cover that covers the post-processor.

[0003] For example, the existing patent document CN218624381U discloses a post-processor insulation structure, which can effectively isolate heat from dissipating outwards through a primary insulation layer, prevent high-temperature heat from radiating to surrounding components through the metal shell, and avoid overheating; and then use a secondary insulation layer to reduce the heat conduction of exhaust gas while preventing flammable debris such as straw from falling into the post-processor, reducing the occurrence of fire.

[0004] For another example, the existing patent document CN219388001U discloses an improved post-processing insulation structure, which further improves the insulation effect and reduces the occurrence of overheating by combining an insulation cylinder with fireproof cotton.

[0005] In the above two existing patent documents, the air inlet and outlet of the post-processor are not provided with heat insulation cotton, resulting in high temperatures around the air inlet and outlet, causing local high temperatures and relatively high safety risks.

[0006] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Utility Model Content

[0007] The utility model (mainly) aims to provide an engine post-processor structure with compact structure and good heat insulation effect and an accessory heat insulation installation structure thereof.

[0008] To this end, the utility model proposes an engine post-processor structure and a nozzle installation structure.

[0009] Preferably, the utility model may also have the following technical features:

[0010] A nozzle mounting structure for an engine afterprocessor, wherein the nozzle mounting structure is arranged on an afterprocessor body, the afterprocessor body is provided with a nozzle mounting hole for mounting a nozzle, and the nozzle mounting hole is a bowl-shaped structure; it also includes a third thermal insulation cotton and a first cover plate, a nozzle clearance hole is provided in the middle of the third thermal insulation cotton, which is installed in the nozzle mounting hole, and the third thermal insulation cotton is abutted against the inner wall of the nozzle mounting hole on all sides; the first cover plate is installed on the outside of the nozzle mounting hole by bolts, and a clearance hole is provided in the middle to accommodate the structure of the nozzle.

[0011] Furthermore, the first cover plate includes a left cover plate and a right cover plate, and the two cover plates are combined into a complete first cover plate to cover the nozzle installation hole.

[0012] An engine after-processor structure includes a first thermal insulation cotton and a second thermal insulation cotton, and is characterized in that it also includes the above-mentioned nozzle mounting structure and / or sensor mounting seat, and an insulating cylinder is provided on the outside of the after-processor body, which is also provided with an air inlet, an air outlet and a nozzle mounting hole, and the air inlet and / or the air outlet are surrounded by thermal insulation cotton, and the thermal insulation cotton includes the first thermal insulation cotton and the second thermal insulation cotton.

[0013] Furthermore, cover plates are provided at both ends of the thermal insulation cylinder, wherein a make way opening is opened in the middle of the cover plate on the side with the air outlet, which is the front end cover; the cover plate arranged on the other end face opposite to the thermal insulation cylinder is welded or riveted to the end face of the thermal insulation cylinder or the end of the post-processor body, which is the rear end cover.

[0014] Furthermore, the outer side of the air outlet is covered with a first heat insulating cotton, and the first heat insulating cotton is riveted to the front end cover by rivets.

[0015] Furthermore, it also includes an annular pressing edge, the size of which is similar to that of the front end cover, and one end of the first thermal insulation cotton is pressed onto the front end cover by riveting using the annular pressing edge.

[0016] Furthermore, the outer side of the air inlet is connected to a section of a cylinder, and the second heat insulating cotton bag is on the outer side of the cylinder.

[0017] Furthermore, it also includes a nozzle pipeline bracket, which is installed on the insulation cylinder by bolts, and on the side of the nozzle, a ring buckle for fixing the pipeline is provided on the top of the nozzle pipeline bracket, and the ring buckle is used to fix the pipeline connected to the nozzle.

[0018] Furthermore, it also includes a whole vehicle sensor harness bracket, which is installed on the outside of the thermal insulation cylinder and on the side of the whole vehicle sensor, and is used to overlap and fix the whole vehicle harness.

[0019] Furthermore, a plurality of sensor mounting seats are installed on the post-processor body, and the sensor mounting seats are used to install temperature sensors and differential pressure sensors. The sensor mounting seats are provided with sensor mounting holes, and a fourth thermal insulation cotton is provided inside the sensor mounting holes, and a sensor clearance hole is provided in the middle of the fourth thermal insulation cotton.

[0020] Compared with the prior art, the beneficial effects of the utility model include: by encapsulating heat-insulating cotton around the air inlet and / or the air outlet, the heat dissipation from the air inlet and the air outlet to the external environment can be effectively reduced, and the risk of local high temperature can be reduced. In this embodiment, the protective cover or breathable cover disclosed in the existing patent document CN218624381U and the patent document CN219388001U is not installed, and the heat-insulating cylinder is spliced ​​into a cylindrical structure by two arc metal plates, so that it is not easy for debris to accumulate on the heat-insulating cylinder. The outer side of the heat-insulating cylinder removes the protective cover or breathable cover that occupies a large space, reducing the accumulation of debris in the connecting corners. At the same time, the relatively smooth outer side of the heat-insulating cylinder has low friction, making it easier for debris to slide off after falling on the heat-insulating cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 and 3 It is a stereogram of the utility model.

[0022] Figure 2 It is the front view of the utility model.

[0023] Figure 4 It is a partial schematic diagram of the utility model. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with specific implementations and in conjunction with the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0025] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts unless otherwise specifically stated.

[0026] like Figures 1 to 4The nozzle mounting structure of an engine after-processor shown in the figure is arranged on the after-processor body 3, and the after-processor body 3 is provided with a nozzle mounting hole 18 for mounting the nozzle, and the nozzle mounting hole 18 is a bowl-shaped structure; it also includes a third thermal insulation cotton 13 and a first cover plate 4, and a nozzle clearance hole 14 is provided in the middle of the third thermal insulation cotton 13, which is installed in the nozzle mounting hole 18, and its four sides are in contact with the inner side wall of the nozzle mounting hole 18 to reduce the heat dissipation of the nozzle mounting hole 18 to the external environment. The first cover plate 4 is installed on the outside of the nozzle mounting hole 18 by bolts, and a clearance hole 14 is provided in the middle to adapt to the structure of the nozzle. Preferably, the first cover plate 4 includes a left cover plate and a right cover plate, and the two cover plates are combined into a complete first cover plate to cover the nozzle mounting hole 18, which can not only prevent the third thermal insulation cotton 13 from detaching, but also further reduce the heat dissipated from the nozzle mounting hole 18 to the outside.

[0027] An engine post-processor structure includes a post-processor body 3, a first heat-insulating cotton 6, a second heat-insulating cotton 16, and the above-mentioned nozzle mounting structure and / or sensor mounting seat 12. The post-processor body 3 is provided with a heat-insulating cylinder 1 on the outside, which is also provided with an air inlet 15, an air outlet 8 and a nozzle mounting hole 18. The air inlet 15 and / or the air outlet 8 are covered with heat-insulating cotton around them, and the heat-insulating cotton includes the first heat-insulating cotton 6 and the second heat-insulating cotton 16. In this embodiment, by encapsulating the heat-insulating cotton around the air inlet 15 and / or the air outlet 8, the heat dissipation of the air inlet 15 and the air outlet 8 to the external environment can be effectively reduced, and the risk of local high temperature can be reduced. In this embodiment, the protective cover or breathable cover disclosed in the existing patent document CN218624381U and the patent document CN219388001U is not installed, and the heat-insulating cylinder is spliced ​​into a cylindrical structure by two arc metal plates, so that it is not easy for debris to accumulate on the heat-insulating cylinder 1. Generally speaking, the protective cover or breathable cover that takes up a large space is removed from the outside of the insulation cylinder 1, which reduces the accumulation of debris in the connection corners. At the same time, the friction of the relatively smooth outside of the insulation cylinder 1 is small, making it easier for debris to slide off after falling on the insulation cylinder 1. Preferably, both ends of the insulation cylinder 1 are also provided with cover plates, wherein, since the air outlet 8 is located on the end face of the post-processor body 3, a clearance opening is opened in the middle of the cover plate on the side with the air outlet 8, which is the front end cover; the four sides of the cover plate provided on the other end face opposite to the post-processor body 3 are welded or riveted to the end face of the insulation cylinder 1 or the end of the post-processor body 3, which is the rear end cover.

[0028] In the above embodiment, the outer side of the air outlet 8 is coated with the first heat insulating cotton 6, and the first heat insulating cotton 6 is riveted to the front end cover by rivets. Preferably, it also includes an annular pressing edge 7, the size of which is similar to the outer circumference of the front end cover, and one end of the first heat insulating cotton 6 is press-fitted to the front end cover by riveting using the annular pressing edge 7. By adding the annular pressing edge 7, the stability and service life of the press-fitted first heat insulating cotton 6 can be improved.

[0029] The air inlet 15 is connected to a section of the cylinder outside, and the second heat insulation cotton 16 is wrapped around the outside of the cylinder. The second heat insulation cotton 16 can be tightened to wrap around the outside of the cylinder by a tension spring or a rope. Preferably, one end of the second heat insulation cotton 16 can also be riveted to the outside of the heat insulation cylinder 1.

[0030] One of the preferred implementation modes of the above technical solution is that the lengths of the first thermal insulation cotton 6 and the second thermal insulation cotton 16 coated on the air outlet 8 and / or the air inlet 15 extend beyond the air outlet 8 or the air inlet 15. In this way, when the air inlet 15 and the air outlet 8 are connected to other pipelines, the extended first thermal insulation cotton 6 and the second thermal insulation cotton 16 can coat the connected pipeline to enhance the thermal insulation effect at the connection point.

[0031] It also includes a nozzle pipe bracket 2, which is installed on the insulation cylinder 1 by bolts, and on the side of the nozzle 5, a ring buckle 21 for fixing the pipe is provided on the top of the nozzle pipe bracket 2, and the ring buckle 21 is used to fix the pipe connected to the nozzle 5. In some nozzle structures, three pipes (2 water pipes and 1 spray pipe) are required to connect the nozzle 5. In this embodiment, three ring buckles 21 are provided to fix the three pipes respectively. In other words, the number of ring buckles 21 is the same as the number of pipes connected to the nozzle 5, which is convenient for maintenance. At the same time, fixing the nozzle pipe by the nozzle pipe bracket 2 can improve the reliability of the nozzle.

[0032] It also includes a vehicle sensor harness bracket 11, which is installed on the outside of the heat-insulating cylinder 1 and on the side of the vehicle sensor 9 for overlapping and fixing the vehicle harness.

[0033] In some embodiments, the post-processor body 3 is provided with three temperature sensors 10, and the wiring harnesses connecting the three temperature sensors 10 are arranged horizontally, and the wiring harnesses are located at a low position of the post-processor body 3, so as to reduce the amount of debris hanging on the wiring harnesses of the sensors and avoid the accumulation of debris. The vehicle sensor 9 is located below the wiring harnesses of the temperature sensors 10.

[0034] In other embodiments, a plurality of sensor mounting seats 12 are installed on the post-processor body 3, and the sensor mounting seats 12 are used to install the temperature sensor 9 and the differential pressure sensor 19. The sensor mounting seat 12 is provided with a sensor mounting hole, and a fourth thermal insulation cotton 17 is provided inside the sensor mounting hole, and a sensor clearance hole is provided in the middle of the fourth thermal insulation cotton 17. Preferably, a fifth thermal insulation cotton is provided outside the sensor mounting seat 12 to further reduce the heat dissipation from the sensor installation to the external environment.

[0035] Those skilled in the art will appreciate that numerous variations to the above description are possible, and that the examples and figures are intended only to describe one or more specific implementations.

[0036] Although exemplary embodiments of the present invention have been described and described, it will be understood by those skilled in the art that various changes and substitutions may be made thereto without departing from the spirit of the present invention. In addition, many modifications may be made to adapt specific situations to the teachings of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but the present invention may also include all embodiments and their equivalents that fall within the scope of the present invention.

Claims

1. A nozzle mounting structure of an engine after-processor, wherein the nozzle mounting structure is arranged on a after-processor body, the after-processor body is provided with a nozzle mounting hole for mounting a nozzle, and the nozzle mounting hole is a bowl-shaped structure; characterized in that: It also includes a third thermal insulation cotton and a first cover plate. A nozzle clearance hole is opened in the middle of the third thermal insulation cotton. The third thermal insulation cotton is installed in the nozzle mounting hole, and the fourth side of the third thermal insulation cotton abuts against the inner wall of the nozzle mounting hole. The first cover plate is installed on the outside of the nozzle mounting hole by bolts, and a clearance hole is opened in the middle to adapt to the structure of the nozzle.

2. The nozzle mounting structure of an engine after-processor according to claim 1, characterized in that: The first cover plate comprises a left cover plate and a right cover plate, and the two cover plates are combined into a complete first cover plate to cover the nozzle installation hole.

3. An engine post-processor structure, comprising a first thermal insulation cotton and a second thermal insulation cotton, characterized in that: It also includes the nozzle mounting structure and / or sensor mounting seat as described in claim 1, and an insulating cylinder is provided on the outside of the post-processor body, which is also provided with an air inlet, an air outlet and a nozzle mounting hole, and the air inlet and / or the air outlet are covered with insulating cotton all around, and the insulating cotton includes the first insulating cotton and the second insulating cotton.

4. An engine post-processor structure as claimed in claim 3, characterized in that: Cover plates are also provided at both ends of the thermal insulation cylinder, wherein a make way opening is opened in the middle of the cover plate on the side with the air outlet, which is the front end cover; the cover plate arranged on the other end face opposite to the thermal insulation cylinder is welded or riveted to the end face of the thermal insulation cylinder or the end of the post-processor body, which is the rear end cover.

5. An engine post-processor structure as claimed in claim 4, characterized in that: The outer side of the air outlet is covered with a first heat insulating cotton, and the first heat insulating cotton is riveted to the front end cover by rivets.

6. An engine post-processor structure as claimed in claim 4 or 5, characterized in that: It also includes an annular pressing edge, the size of which is similar to that of the front end cover, and one end of the first thermal insulation cotton is pressed onto the front end cover by riveting using the annular pressing edge.

7. An engine post-processor structure as claimed in claim 3, characterized in that: The outside of the air inlet is connected to a section of a cylinder, and the second heat-insulating cotton bag is on the outside of the cylinder.

8. The engine post-processor structure according to claim 3, characterized in that: It also includes a nozzle pipeline bracket, which is installed on the insulation cylinder through bolts, and a ring buckle for fixing the pipeline is provided on the top of the nozzle pipeline bracket on the side of the nozzle, and the ring buckle is used to fix the pipeline connected to the nozzle.

9. An engine post-processor structure as claimed in claim 3, characterized in that: It also includes a whole vehicle sensor harness bracket, which is installed on the outside of the heat-insulating cylinder and on the side of the whole vehicle sensor, and is used to overlap and fix the whole vehicle harness.

10. The engine post-processor structure according to claim 3, characterized in that: A plurality of sensor mounting seats are installed on the post-processor body, and the sensor mounting seats are used to install temperature sensors and differential pressure sensors. The sensor mounting seats are provided with sensor mounting holes, and a fourth thermal insulation cotton is provided inside the sensor mounting holes, and a sensor clearance hole is provided in the middle of the fourth thermal insulation cotton.

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