Exhaust corrugated pipe assembly

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to an exhaust corrugated pipe assembly. An exhaust corrugated pipe assembly comprises a steel pipe, a corrugated pipe, a heat preservation layer, a heat insulation sleeve and a rubber pipe with high temperature resistance. One end of the corrugated pipe is connected with the steel pipe; one end of the heat preservation layer is arranged on the corrugated pipe in a sleeving mode, the other end of the heat preservation layer is arranged on the steel pipe in a sleeving mode, the heat insulation sleeve and the rubber pipe are arranged outside the heat preservation layer in a sleeving mode, the heat insulation sleeve corresponds to the steel pipe, and the rubber pipe corresponds to the corrugated pipe. According to the exhaust corrugated pipe assembly provided by the embodiment of the utility model, the connection mode of the exhaust corrugated pipe assembly in the prior art is changed, and the rubber pipe and the heat insulation sleeve with high temperature resistance are added, so that the heat insulation effect is improved, and the aesthetic property is also improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and more specifically, to an exhaust bellows assembly. Background Technology

[0002] On December 1, 2022, the fourth emission standard for non-road mobile machinery officially came into effect nationwide. Harvesters meeting the National IV emission standard added exhaust gas treatment systems, resulting in increased exhaust temperatures. To prevent burns to personnel during harvester operation and parking / regeneration processes, and to prevent fires caused by stalk accumulation, high-temperature components are designed with heat insulation. Specifically, the pipeline from the turbocharger exhaust port to the aftertreatment intake port (referred to as the exhaust bellows assembly) features a section of bellows in the middle. The bellows has tensile and compressive functions, primarily absorbing vibration, balancing installation tolerances, and reducing structural noise. The exhaust bellows assembly is heat-insulated to ensure its functionality is not compromised.

[0003] The existing exhaust bellows assembly consists of a bellows and an intermediate steel pipe welded together. Currently, the main heat insulation and protection methods for the exhaust bellows assembly in harvesting machinery are:

[0004] 1) The exhaust bellows assembly is completely wrapped with a silicone cloth heat insulation sleeve; the inner layer of the silicone cloth heat insulation sleeve is steel wire mesh, the middle layer is fiberglass felt, and the outer layer is silicone cloth. The three layers of heat insulation materials are sewn together by a sewing machine and then fixed with springs to wrap the exhaust bellows. This has no impact on the function of the bellows.

[0005] 2) Stainless steel foil is welded to the steel pipe section of the exhaust bellows assembly, leaving the bellows section exposed;

[0006] 3) The steel pipe section of the exhaust corrugated pipe assembly is welded with stainless steel foil, and the corrugated pipe section is wrapped with silicone cloth heat insulation sleeve; the inner heat insulation layer of the steel pipe section is glass fiber felt wrapped around the steel pipe, and the outer side is welded with stainless steel foil.

[0007] The exhaust bellows assembly is completely wrapped with silicone cloth insulation material. The silicone cloth insulation sleeve provides insulation, but the pipework is bulky and the insulation protection is not aesthetically pleasing. The silicone cloth insulation sleeve has a short service life and the surface is prone to peeling and falling off.

[0008] The exhaust bellows assembly has welded embossed stainless steel insulation in the piping section. The bellows area is unprotected, resulting in high temperatures. When straw is piled up, the surface is prone to ignition. Utility Model Content

[0009] In view of this, the purpose of this utility model is to provide an exhaust bellows assembly to solve the above-mentioned technical problems.

[0010] This utility model provides an exhaust corrugated pipe assembly, including a steel pipe, a corrugated pipe, a heat insulation layer, a heat insulation sleeve, and a rubber hose with high temperature resistance.

[0011] One end of the corrugated pipe is connected to the steel pipe;

[0012] One end of the insulation layer is fitted onto the corrugated pipe, and the other end is fitted onto the steel pipe. The heat insulation sleeve and the rubber hose are both fitted onto the outside of the insulation layer, with the heat insulation sleeve corresponding to the steel pipe and the rubber hose corresponding to the corrugated pipe.

[0013] In an optional embodiment, the tubing has a corrugated shape.

[0014] In an optional embodiment, the low-wave surface of the hose is fitted with a reinforcing collar.

[0015] In an optional embodiment, a connecting sleeve is further included, one end of which is connected to one end of the heat insulation sleeve, and the other end of which is connected to the rubber tube.

[0016] In an optional embodiment, the connecting sleeve includes a corrugated sleeve, a transition sleeve, and a venting sleeve;

[0017] The corrugated sleeve and the exhaust sleeve have different diameters, and the corrugated sleeve is connected to the exhaust sleeve through the transition sleeve.

[0018] In an optional embodiment, the exhaust sleeve is connected to the heat insulation sleeve by welding.

[0019] In an optional embodiment, the corrugated sleeve is connected to the hose by a clamp.

[0020] In an optional embodiment, the corrugated sleeve has a corrugated shape.

[0021] In an optional embodiment, a layer of glass fiber aluminum foil is provided between the hose and the insulation layer.

[0022] In an optional embodiment, the insulation layer is a glass fiber felt.

[0023] The exhaust bellows assembly provided in this embodiment of the utility model changes the connection method of the exhaust bellows assembly in the prior art by adding a high-temperature resistant rubber hose and a heat insulation sleeve, which not only increases the heat insulation effect but also improves the aesthetics.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A front view of the exhaust bellows assembly provided in an embodiment of the present invention is shown;

[0027] Figure 2 A partial cross-sectional view of the exhaust bellows assembly provided in an embodiment of the present invention is shown;

[0028] Figure 3 A cross-sectional view of the connecting sleeve of the exhaust bellows assembly provided in an embodiment of the present invention is shown.

[0029] Explanation of key component symbols:

[0030] 1-Insulation sleeve; 2-Hose; 3-Clamp; 4-Reinforcing ring; 5-Connecting sleeve; 6-Exhaust sleeve; 7-Transition sleeve; 8-Corrugated sleeve. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] This utility model provides an exhaust bellows assembly, such as Figure 1 and Figure 2 As shown, it includes a steel pipe, a corrugated pipe, an insulation layer, a heat insulation sleeve 1, and a rubber hose 2 with high temperature resistance; one end of the corrugated pipe is connected to the steel pipe; one end of the insulation layer is sleeved on the corrugated pipe, and the other end is sleeved on the steel pipe; both the heat insulation sleeve 1 and the rubber hose 2 are sleeved outside the insulation layer, and the heat insulation sleeve 1 corresponds to the steel pipe, and the rubber hose 2 corresponds to the corrugated pipe.

[0036] In this embodiment, the two ends of the insulation layer are respectively fitted onto the steel pipe and the corrugated pipe, which can not only realize the connection between the corrugated pipe and the steel pipe, but also achieve the effect of insulation at the connection between the corrugated pipe and the steel pipe.

[0037] Meanwhile, a heat insulation sleeve 1 and a rubber hose 2 are installed on the outside of the insulation layer. The heat insulation sleeve 1 is fitted onto the end with the steel pipe, and the rubber hose 2 is fitted onto the end with the corrugated pipe, which can further enhance the heat insulation performance of the steel pipe and the corrugated pipe.

[0038] In other words, by first insulating the corrugated pipe and steel pipe as a whole through the insulation layer, and then individually insulating the steel pipe and corrugated pipe through the insulation sleeve 1 and the rubber hose 2, the best insulation effect can be achieved.

[0039] In this embodiment, the heat insulation sleeve 1 is made of stainless steel foil, which is welded and sleeved on the outside of the heat insulation layer.

[0040] In an optional embodiment, the tube 2 has a wave-shaped structure.

[0041] In this embodiment, the shape of the hose 2 is set as a wave structure, so that it is consistent with or similar to the shape of the corrugated pipe, thereby ensuring the performance of the corrugated pipe.

[0042] In an optional embodiment, the low-wave surface of the hose 2 is fitted with a reinforcing collar 4.

[0043] In this embodiment, the strength of the hose 2 can be effectively increased by providing a reinforcing collar 4 at the low corrugated surface of the hose 2.

[0044] Specifically, in this embodiment, the hose 2 is generally wavy, and its inner side also has a wave-like surface. Therefore, a reinforcing collar 4 is also provided on the low wave-like surface. By providing reinforcing collars 4 both inside and outside, the strength of the hose 2 is further increased.

[0045] In this embodiment, the reinforcing collar 4 has a circular cross-section, which can reduce the damage of the reinforcing collar 4 to the surface of the hose 2 and increase the service life of the hose 2.

[0046] It is understandable that the cross-section of the reinforcing ring 4 can be circular, but it is not limited to a circle. It can also be other shapes, such as ellipse, fan shape, etc., as long as it can reinforce the hose 2 and reduce wear and damage to the hose 2.

[0047] In this embodiment, the reinforcing ring 4 is made of steel.

[0048] The reinforcing ring 4 is made of stainless steel, which not only ensures the strength of the hose 2, but also prevents the reinforcing ring 4 from being oxidized and corroded, thus ensuring the service life of both the reinforcing ring 4 and the hose 2, and reducing the cost of use and maintenance.

[0049] It is understood that in this embodiment, the reinforcing collar 4 is made of stainless steel, but it is not limited to stainless steel. It can also be made of other materials, such as aluminum alloy, as long as it can strengthen the hose 2.

[0050] In an optional embodiment, a connecting sleeve 5 is also included, one end of which is connected to one end of the heat insulation sleeve 1, and the other end of which is connected to the rubber tube 2.

[0051] In this embodiment, in order to avoid separation that may occur due to vibration when the heat insulation sleeve 1 and the rubber hose 2 are fitted onto the steel pipe and the corrugated pipe, and also to ensure the heat insulation effect of the heat insulation sleeve 1 and the rubber hose 2, the heat insulation sleeve 1 and the rubber hose 2 are connected together by the connecting sleeve 5 to form a complete heat insulation structure, thus ensuring the heat insulation effect.

[0052] In alternative implementations, such as Figure 3 As shown, the connecting sleeve 5 includes a corrugated sleeve 8, a transition sleeve 7, and an exhaust sleeve 6. The corrugated sleeve 8 and the exhaust sleeve 6 have different diameters, and the corrugated sleeve 8 is connected to the exhaust sleeve 6 through the transition sleeve 7.

[0053] In this embodiment, since the steel pipe and the corrugated pipe have different diameters, the connecting sleeve 5 is divided into three parts: the exhaust sleeve 6 connected to the steel pipe, the corrugated sleeve 8 connected to the corrugated pipe, and the transition sleeve 7 connecting the exhaust sleeve 6 and the corrugated sleeve 8.

[0054] The three parts form an integral structure. The corrugated sleeve 8 and the exhaust sleeve 6 are both straight cylindrical structures and are coaxially arranged. The transition sleeve 7 is a tapered sleeve used to transition between two pipes with different diameters.

[0055] In an optional embodiment, the exhaust sleeve 6 is connected to the heat insulation sleeve 1 by welding.

[0056] In this embodiment, the connecting sleeve 5 is made of metal, which can be welded to the stainless steel foil that serves as the heat insulation sleeve 1 to achieve a fixed connection.

[0057] Welding is a method of connection that ensures both stability and a tight seal after connection.

[0058] It should be noted that in this embodiment, the connection between the exhaust sleeve 6 and the heat insulation sleeve 1 is welding. However, it is not limited to welding. Other fixed connection methods are also possible, such as snap-fit ​​or tight fit. As long as the connection stability and sealing performance between the exhaust sleeve 6 and the heat insulation sleeve 1 can be guaranteed, it is acceptable.

[0059] In an optional embodiment, the corrugated sleeve 8 is connected to the hose 2 via a clamp 3.

[0060] In this embodiment, one end of the corrugated sleeve 8 is connected to the transition sleeve 7, and the other end is set on the outside of the corrugated pipe and the inside of the hose 2. The corrugated sleeve 8 is pressed onto the corrugated pipe through the hose 2, and then the connection is tightened with the clamp 3, thereby realizing the fixed connection between the corrugated sleeve 8 and the hose 2. At the same time, the hose 2, the connecting sleeve 5 and the heat insulation sleeve 1 are fixedly connected together to form a whole, and no axial movement will occur.

[0061] In an optional embodiment, the corrugated sleeve 8 has a corrugated shape.

[0062] In this embodiment, the corrugated sleeve 8 is corrugated in shape, which can increase the contact area between the corrugated sleeve 8 and the hose 2 and increase the friction. This makes it easier for the clamp 3 to lock the corrugated sleeve 8, increasing the locking force. After the clamp 3 is tightened, it can effectively prevent the hose 2 from falling off, ensuring the stability of the connection and the sealing effect.

[0063] In an optional embodiment, a glass fiber aluminum foil layer is provided between the hose 2 and the insulation layer.

[0064] In this embodiment, the corrugated fiber aluminum foil placed between the hose 2 and the insulation layer can further increase the insulation performance of the corrugated hose, and also increase the hose 2's resistance to high temperatures of the inner layer.

[0065] In an optional embodiment, the insulation layer is a glass fiber felt.

[0066] Fiberglass mat has excellent thermal insulation properties, effectively blocking heat conduction. At the same time, fiberglass mat also has good high-temperature resistance, maintaining stability and performance in high-temperature environments.

[0067] Since the exhaust bellows assembly discharges high-temperature gas, the use of fiberglass felt as an insulation layer ensures that the insulation performance is not affected when the steel pipe or bellows is at a high temperature.

[0068] It should be noted that in this embodiment, the insulation layer is made of fiberglass felt, but it is not limited to fiberglass felt alone. It can also be made of other materials, as long as it can achieve the insulation effect on the internal exhaust corrugated assembly.

[0069] The exhaust bellows assembly provided in this embodiment of the utility model changes the connection method of the exhaust bellows assembly in the prior art by adding a high-temperature resistant rubber hose 2 and a heat insulation sleeve 1, which not only increases the heat insulation effect but also improves the aesthetics.

[0070] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. All should be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An exhaust bellows assembly, characterized in that, This includes steel pipes, corrugated pipes, insulation layers, heat insulation sleeves, and rubber hoses with high-temperature resistance. One end of the corrugated pipe is connected to the steel pipe; One end of the insulation layer is fitted onto the corrugated pipe, and the other end is fitted onto the steel pipe. The heat insulation sleeve and the rubber hose are both fitted onto the outside of the insulation layer, with the heat insulation sleeve corresponding to the steel pipe and the rubber hose corresponding to the corrugated pipe.

2. The exhaust bellows assembly according to claim 1, characterized in that, The hose has a corrugated shape.

3. The exhaust bellows assembly according to claim 2, characterized in that, The hose has a reinforcing collar fitted on its low-wave surface.

4. The exhaust bellows assembly according to claim 1, characterized in that, It also includes a connecting sleeve, one end of which is connected to one end of the heat insulation sleeve, and the other end of which is connected to the rubber tube.

5. The exhaust bellows assembly according to claim 4, characterized in that, The connecting sleeve includes a corrugated sleeve, a transition sleeve, and a venting sleeve; The corrugated sleeve and the exhaust sleeve have different diameters, and the corrugated sleeve is connected to the exhaust sleeve through the transition sleeve.

6. The exhaust bellows assembly according to claim 5, characterized in that, The exhaust sleeve is connected to the heat insulation sleeve by welding.

7. The exhaust bellows assembly according to claim 5, characterized in that, The corrugated sleeve is connected to the hose via a clamp.

8. The exhaust bellows assembly according to claim 7, characterized in that, The corrugated sleeve has a corrugated shape.

9. The exhaust bellows assembly according to claim 1, characterized in that, A layer of glass fiber aluminum foil is provided between the hose and the insulation layer.

10. The exhaust bellows assembly according to claim 1, characterized in that, The insulation layer is made of fiberglass felt.

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