Exhaust manifold for engine and mining equipment engine

Abstract

The exhaust manifold for the engine comprises an exhaust pipe main channel with a hollow cavity, and a plurality of exhaust connectors communicated with an engine cylinder are connected to the exhaust pipe main channel; the multiple exhaust connectors are sequentially arranged in the axial direction of the exhaust pipe main channel, each exhaust connector is fixedly communicated with the hollow cavity of the exhaust pipe main channel through a fixing structure, the short exhaust connectors are stably connected with an engine, the exhaust manifold component is prevented from swinging, and the service life of the exhaust manifold component is prolonged. The anti-vibration performance of the exhaust manifold is greatly improved, the exhaust working stability and the exhaust efficiency of the exhaust manifold are improved, and the technical problem that an existing engine exhaust manifold cannot be applied to mine equipment engines with large vibration is solved.

Description

Technical Field

[0001] The present application relates to the technical field of engine exhaust manifolds, and in particular to an exhaust manifold for a mining equipment engine. Background Art

[0002] The exhaust manifold is closely connected to the engine cylinder block and is responsible for collecting and concentrating the exhaust gas from each cylinder. As the core power component of mining machinery, the engine's performance directly affects the operation of the entire mining equipment. The engine's exhaust manifold is an important part of the engine's exhaust system. Since the working environment of mining machinery is usually harsh, it faces multiple challenges such as high temperature, high humidity, and dust. At the same time, due to the working characteristics of mining machinery, the engine often needs to generate a large power output, which places higher requirements on the working stability and exhaust efficiency of the mining equipment engine exhaust manifold.

[0003] However, the exhaust manifold of the existing engine is generally composed of multiple independent long exhaust manifolds connected to the engine cylinder block, and then the long exhaust manifolds are intertwined and merged into the external exhaust pipe through the confluence port. The number of cylinders in the engine determines the number of exhaust manifolds. For example, a four-cylinder engine is equipped with four exhaust manifolds, and an eight-cylinder engine is equipped with eight exhaust manifolds. For example, the exhaust manifold disclosed in Chinese patent number CN308120189S can be seen in detail. Figure 1 The long exhaust manifolds 1 and the confluence ports 10 shown in the figure; another example is a structure of an exhaust manifold disclosed in Taiwan Patent Publication No. TWM624040U, which includes a plurality of manifolds, one end of the manifold is connected to an intake seat, the intake seat is provided with a plurality of intake ports combined with each of the manifolds, the other end of the manifold is concentrated and connected to an exhaust seat, the exhaust seat is provided with an exhaust port and a connecting pipe with the same diameter as the exhaust port, the end of the manifold is equally divided to form a matching uneven cut, the uneven cut is connected to the diameter of the connecting pipe after being connected, and the manifold is further connected and fixed to the connecting pipe, so that the exhaust of each manifold can pass through the connecting pipe smoothly, avoiding exhaust mixing and mutual interference to generate exhaust resistance, thereby improving the engine combustion efficiency.

[0004] The exhaust manifold structure of the above patented technology has multiple long exhaust manifolds. In the limited engine space, on the one hand, it occupies a large space and the interlaced and coiled pipes cause complex pipe problems; on the other hand, it is difficult to stably fix each long suspended exhaust manifold. If it is used in mining machinery and equipment with large vibrations, it is difficult to ensure the stability and efficiency of its exhaust work.

[0005] Therefore, for those skilled in the art, how to design an exhaust manifold for a mining equipment engine is a technical problem that needs to be solved urgently. Utility Model Content

[0006] In view of this, the technical problem to be solved by the present application is to overcome the deficiencies of the prior art and provide an exhaust manifold for a mining equipment engine.

[0007] To achieve the above-mentioned objectives, on the one hand, an embodiment of the present application provides an exhaust manifold for an engine, comprising an exhaust pipe main channel having a hollow cavity, and a plurality of exhaust interfaces connected to the engine cylinders are connected to the exhaust pipe main channel; the plurality of exhaust interfaces are arranged in sequence along the axial direction of the exhaust pipe main channel, and each of the exhaust interfaces is fixedly connected to the hollow cavity of the exhaust pipe main channel through a fixed structure.

[0008] Furthermore, the exhaust interface includes a hollow interface body, one end of which is fixedly connected to the exhaust pipe main channel, and the other end is provided with an ear flange; the fixed structure is two fixed blocks symmetrically arranged on both sides of the outer surface of the interface body, one end of each of the fixed blocks is fixedly connected to the exhaust pipe main channel, and the other end is connected to the lug of the ear flange.

[0009] Furthermore, the fixing block is provided with a connecting through hole along its axial direction.

[0010] Furthermore, the number of the exhaust ports is a natural number N, and 2≤N≤8.

[0011] Furthermore, the number of the exhaust ports is 3.

[0012] Furthermore, the exhaust manifold is made of ductile iron.

[0013] Furthermore, a bend channel is provided at one end of the exhaust pipe main channel, the end of the bend channel away from the exhaust pipe main channel is connected to an external exhaust pipe, and a valve body for regulating the flow of exhaust gas is provided at the end of the bend channel away from the exhaust pipe main channel.

[0014] Furthermore, a rotating shaft boss for mounting the valve body is provided on a side wall of one end of the curved pipe channel away from the main channel of the exhaust pipe, and a rotating shaft hole is provided in the rotating shaft boss.

[0015] Furthermore, a plurality of fixing bosses are arranged on the surface of the exhaust pipe main channel.

[0016] Another aspect of the embodiments of the present application provides a mining equipment engine, comprising the exhaust manifold for the engine as described in any one of the above embodiments.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The present application provides an exhaust manifold for a mining equipment engine, which can achieve the beneficial effects of exhaust working stability and exhaust efficiency of the mining equipment engine in harsh environments.

[0019] Specifically, a plurality of shorter exhaust interfaces are arranged on an exhaust pipe main channel having a hollow cavity, and the plurality of exhaust interfaces are arranged in sequence along the axial direction of the exhaust pipe main channel, each exhaust interface is fixedly connected to the hollow cavity of the exhaust pipe main channel through a fixed structure, and the exhaust gas discharged from the engine cylinder directly enters the exhaust pipe main channel through the shorter exhaust interface and is discharged. This has the advantages of simple and convenient design structure, saving accommodation space, and being conducive to stable fixation, and can meet the exhaust working stability and exhaust efficiency of mining equipment engines in harsh vibration environments.

[0020] Furthermore, by symmetrically arranging two fixing blocks on both sides of the outer surface of the interface body of the exhaust interface, one end of each fixing block is fixedly connected to the pipe wall of the exhaust pipe main channel, and the other end is connected to the lug of the ear flange; further, by opening a connecting through hole along the axial direction of the fixing block, the bolt is passed through the connecting through hole and screwed on the engine, so as to achieve a firm connection between each exhaust interface and the engine, prevent the exhaust interface components from swinging, greatly improve the vibration resistance of the exhaust manifold, and improve the exhaust stability and exhaust efficiency of the exhaust manifold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings are used to provide a further understanding of the present application, constitute a part of the present application, and are only intended to provide an illustrative explanation and description of the present application, and are not intended to limit the scope of the present application. In the drawings:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of an exhaust manifold for an engine in the prior art;

[0023] Figure 2 A schematic diagram of a three-dimensional structure of an exhaust manifold for an engine in an embodiment of the present application from one perspective;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the exhaust manifold for the engine in another viewing angle state in the embodiment of the present application;

[0025] Figure 4 for Figure 3 Schematic diagram of the main view structure of the viewing angle state;

[0026] Figure 5 for Figure 4 A schematic cross-sectional view of the curved pipe passage along the middle line AA away from one end of the exhaust pipe main channel.

[0027] Reference numerals:

[0028] 1. Exhaust manifold; 10. Inlet;

[0029] 2. exhaust pipe main channel; 20. hollow cavity of exhaust pipe main channel; 21. end of exhaust pipe main channel;

[0030] 3. Exhaust interface; 31. Ear flange; 311. Lug of ear flange; 32. Fixing block; 320. Connecting through hole;

[0031] 41. elbow channel; 41. one end of the elbow channel away from the main exhaust pipe; 42. shaft boss; 420. shaft hole.

[0032] 5. Fix the boss. DETAILED DESCRIPTION

[0033] Several implementation modes of the present application will be disclosed below in the form of drawings, which clearly and completely describe the technical solution of the present application. The drawings, which constitute a part of the specification of the present application, are used to provide a further understanding of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0034] It should be noted that unless a direction is defined separately, the directions such as up, down, left, and right mentioned in this document are based on the embodiments of this application. Figure 3 The directions of up, down, left, right, etc. shown are used as the basis. If the specific posture changes, the directional indication will also change accordingly. The words "first", "second", "third", "fourth" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. In addition, in various embodiments of the present disclosure, the same or similar reference numerals represent the same or similar components.

[0035] In this application, unless otherwise specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body, unless otherwise specified. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] Embodiment 1

[0038] See also Figure 2 , Figure 3 As shown, the present embodiment provides an exhaust manifold for an engine, comprising an exhaust pipe main channel 2 having a hollow cavity 20, and a plurality of exhaust interfaces 3 connected to the engine cylinders are connected to the exhaust pipe main channel 2; the plurality of exhaust interfaces 3 are arranged in sequence along the axial direction of the exhaust pipe main channel 2, and each of the exhaust interfaces 3 is fixedly connected to the hollow cavity 20 of the exhaust pipe main channel 2 through a fixed structure, so that the exhaust gas discharged from the engine cylinder body can directly and smoothly enter the exhaust pipe main channel 2 for discharge after entering the exhaust interface 3, and each exhaust interface can balance the exhaust pressure of each cylinder, reduce mutual interference between cylinders, and improve exhaust efficiency.

[0039] It should be noted that the axial length of the exhaust port 3 in this embodiment is relatively short, and the specific axial length ranges from 50 mm to 150 mm, and is more preferably 94 mm; compared with the existing longer exhaust manifold, it is convenient for overall fixed control to prevent swaying during large vibrations, so as to better adapt to the harsh environment where mining machinery and equipment are located. Figure 2 , Figure 3 As shown, the exhaust interface 3 includes a hollow interface body 30, one end of the interface body 30 is fixedly connected to the exhaust pipe main channel 2, and the other end is provided with an ear flange 31; the fixed structure is two fixed blocks 32 formed by symmetrically extending outward on both sides of the outer surface of the interface body 30, one end of each of the fixed blocks 32 is fixedly connected to the exhaust pipe main channel 2, and the other end is connected to the lug 311 of the ear flange 31.

[0040] Furthermore, if Figure 2 , Figure 3 As shown, the fixing block 32 is provided with a connecting through hole 320 along its axial direction, so that the bolt can pass through the connecting through hole 320 and be screwed on the cylinder head of the engine, thereby realizing a stable connection between each exhaust interface and the engine, preventing the exhaust interface components from swinging, greatly improving the anti-vibration performance of the exhaust manifold, and improving the stability and exhaust efficiency of the exhaust manifold exhaust operation; at the same time, it also has the advantages of simple structure, firm connection, easy disassembly, and convenient later maintenance by the staff.

[0041] Utilizing the technical solution of this embodiment, this embodiment provides a plurality of shorter exhaust interfaces 3 on an exhaust pipe main channel 2 having a hollow cavity 20, and the plurality of exhaust interfaces 3 are arranged in sequence along the axial direction of the exhaust pipe main channel 2, and each exhaust interface 3 is fixedly connected to the hollow cavity of the exhaust pipe main channel 2 through a fixed structure, and the exhaust gas discharged from the engine cylinder directly enters the exhaust pipe main channel through the shorter exhaust interface and is discharged, which has the advantages of simple and convenient design structure, saving accommodation space, and being conducive to stable fixation, etc., and can meet the exhaust working stability and exhaust efficiency of mining equipment engines in harsh vibration environments, and solves the technical problem that the existing engine exhaust manifold cannot be applied to mining equipment engines with large vibrations.

[0042] Embodiment 2

[0043] Based on Example 1, as a preferred implementation, Figure 2 , Figure 3 As shown, in the present embodiment, a plurality of fixed bosses 5 are arranged on the surface of the exhaust pipe main channel 2. The fixed bosses 5 are a connection structure in a convex shape, each with a threaded hole, and are mainly used for connecting and installing other components. In particular, a conical boss is also arranged on the wall of the exhaust pipe main channel between any two adjacent exhaust interfaces, which makes full use of the structural space and can also enhance the wall thickness of the exhaust pipe main channel between the two exhaust interfaces 3, reduce the tensile stress between any two adjacent exhaust interfaces 3, and help improve the overall structural stability of the exhaust manifold.

[0044] It should be noted that if Figure 2 , Figure 3 As shown, this embodiment takes the arrangement of three exhaust ports 3 on the exhaust pipe main channel 2 as an example. According to actual design requirements, the number of exhaust ports can of course be 2, 4, 5, 6, 7, 8, etc. At the same time, in order to enhance the applicability of the exhaust manifold, a connection portion that can be connected to an exhaust pipe main channel that is also provided with an exhaust port is provided at the end 21 of the exhaust pipe main channel 2. For example, a six-cylinder engine can be directly connected to an exhaust pipe main channel provided with three exhaust ports.

[0045] As a preferred embodiment, the material of the exhaust manifold of this embodiment is preferably but not limited to ductile iron, because cast iron with spherical graphite has better high temperature resistance than flake graphite, because during the solidification process of cast iron, flake graphite grows as the leading phase, and at the end of eutectic solidification, the graphite in each eutectic group forms a continuous branched three-dimensional form. At high temperature, when oxygen invades the interior of the metal, the graphite will form a microscopic channel after oxidation, which accelerates the oxidation process. When spherical graphite nucleates, it grows to a certain size alone and is surrounded by the matrix, existing as an isolated ball. After the graphite ball is oxidized, no channel is formed, thereby weakening the further oxidation. Therefore, the high temperature oxidation resistance of ductile iron is better than that of other forms of graphite, and the oxidized holes have less effect on the high temperature strength of cast iron than other forms of graphite, which is conducive to enhancing the overall working stability of the exhaust manifold.

[0046] As a preferred embodiment, combined with Figure 1-Figure 5 As shown, a bend channel 4 is provided at one end of the exhaust pipe main channel 2, and the end of the bend channel 4 away from the exhaust pipe main channel 2 is connected to an external exhaust pipe, and the end of the bend channel 4 away from the exhaust pipe main channel 2 is provided with a valve body for regulating the flow of exhaust gas.

[0047] Furthermore, combined with Figure 5 As shown, a shaft boss 42 for mounting the valve body is provided on the side wall of the end 41 of the elbow channel 4 away from the exhaust pipe main channel 2, and a shaft hole 420 is provided in the shaft boss 42. The shaft hole 420 is used to mount the valve body shaft so that the valve body can be opened or closed to adjust the flow rate of the exhaust gas. In particular, when the mining equipment is out of use, the valve body is closed to protect the exhaust manifold of the mining equipment engine in harsh environments, which is beneficial to increasing the service life of the exhaust manifold.

[0048] Embodiment 3

[0049] A mining equipment engine provided in an embodiment of the present application includes an exhaust manifold for an engine as described in any one of the above-mentioned embodiments 1 and 2, wherein the exhaust manifold includes an exhaust pipe main channel 2 having a hollow cavity 20, and a plurality of exhaust interfaces 3 connected to the engine cylinders are connected to the exhaust pipe main channel 2; the plurality of exhaust interfaces 3 are arranged in sequence along the axial direction of the exhaust pipe main channel 2, and each of the exhaust interfaces 3 is fixedly connected to the hollow cavity 20 of the exhaust pipe main channel 2 through a fixed structure, so that the exhaust gas discharged from the engine cylinder body can directly and smoothly enter the exhaust pipe main channel 2 for discharge after entering the exhaust interface 3, and each exhaust interface can balance the exhaust pressure of each cylinder, reduce mutual interference between cylinders, and improve exhaust efficiency.

[0050] In summary, the exhaust manifold for a mining equipment engine provided in the present application can achieve the beneficial effects of exhaust working stability and exhaust efficiency of the mining equipment engine in harsh environments.

[0051] Specifically, by setting a plurality of shorter exhaust interfaces on the exhaust pipe main channel with a hollow cavity, and the plurality of exhaust interfaces are arranged in sequence along the axial direction of the exhaust pipe main channel, each exhaust interface is fixedly connected to the hollow cavity of the exhaust pipe main channel through a fixed structure, and the exhaust gas discharged from the engine cylinder directly enters the exhaust pipe main channel through the shorter exhaust interface and is discharged, it has the advantages of simple and convenient design structure, saving accommodation space, and being conducive to stable fixation, and can meet the exhaust work stability and exhaust efficiency of the mining equipment engine under harsh vibration environment. Further, by symmetrically setting two fixing blocks on both sides of the outer surface of the interface body of the exhaust interface, one end of each fixing block is fixedly connected to the pipe wall of the exhaust pipe main channel, and the other end is connected to the lug of the ear flange; further, by opening a connecting through hole on the fixing block along its axial direction, the bolt is passed through the connecting through hole and screwed on the engine, so as to realize the stable connection between each exhaust interface and the engine, prevent the exhaust interface components from swaying, greatly improve the anti-vibration performance of the exhaust manifold, and improve the exhaust work stability and exhaust efficiency of the exhaust manifold.

[0052] The above description shows and describes the preferred implementation of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other implementations, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the object concept of this article through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. An exhaust manifold for an engine, characterized in that: It comprises an exhaust pipe main channel having a hollow cavity, and a plurality of exhaust interfaces connected to the engine cylinders are connected to the exhaust pipe main channel; A plurality of the exhaust interfaces are arranged in sequence along the axial direction of the exhaust pipe main channel, and each of the exhaust interfaces is fixedly connected to the hollow cavity of the exhaust pipe main channel through a fixed structure.

2. The exhaust manifold for an engine according to claim 1, characterized in that: The exhaust interface includes a hollow interface body, one end of which is fixedly connected to the main channel of the exhaust pipe, and the other end is provided with an ear flange; the fixed structure is a fixed block symmetrically arranged on both sides of the outer surface of the interface body, one end of the fixed block is fixedly connected to the main channel of the exhaust pipe, and the other end is connected to the lug of the ear flange.

3. The exhaust manifold for an engine according to claim 2, characterized in that: The fixing block is provided with a connecting through hole along its axial direction.

4. The exhaust manifold for an engine according to claim 2, characterized in that: The number of the exhaust ports is a natural number N, and 2≤N≤8.

5. The exhaust manifold for an engine according to claim 4, characterized in that: The number of the exhaust ports is 3.

6. The exhaust manifold for an engine according to any one of claims 1 to 5, characterized in that: The exhaust manifold is made of ductile iron.

7. The exhaust manifold for an engine according to claim 1, characterized in that: A bend channel is arranged at one end of the exhaust pipe main channel, and the end of the bend channel away from the exhaust pipe main channel is connected to the external exhaust pipe, and a valve body for regulating the flow of exhaust gas is arranged at the end of the bend channel away from the exhaust pipe main channel.

8. The exhaust manifold for an engine according to claim 7, characterized in that: A rotating shaft boss for mounting the valve body is arranged on the side wall of the curved pipe channel at one end away from the exhaust pipe main channel, and a rotating shaft hole is arranged in the rotating shaft boss.

9. The exhaust manifold for an engine according to claim 1, characterized in that: A plurality of fixing bosses are arranged on the surface of the exhaust pipe main channel.

10. A mining equipment engine, characterized in that: An engine exhaust manifold comprising the exhaust manifold according to any one of claims 1 to 9.

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