Internal combustion engine exhaust pipe spark arrester structure
By designing the internal combustion engine spark extinguisher structure connected to the hollow tube body and the porous mesh pipe, multiple collision extinguishing of sparks is achieved by using multi-layer stainless steel mesh plate components, the spark extinguisher in the prior art is solved by solving the large volume, high cost and exhaust resistance of the spark extinguisher in the prior art The big problem has achieved efficient and low-cost spark extinguishing effect.
Patent Information
- Application Number
- CN202421021429.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-13
AI Technical Summary
There are contradictions in the volume and cost of existing spark extinguishers. They must not only effectively extinguish the sparks but also avoid high exhaust resistance, which leads to high fuel consumption and limited promotion and application.
A spark extinguisher structure of internal combustion engine exhaust pipe is designed, using hollow pipe body to connect with porous mesh pipe, multiple collisions and extinguishing of sparks are achieved through multi-layer stainless steel mesh plate components, and the structure is stable through welding connections to adapt to different exhaust gases. .
It achieves efficient extinguishing of sparks, reduces exhaust backpressure, simplifies structure, reduces costs, and adapts to the needs of internal combustion engines of different specifications and models.
Smart Images
Figure CN222162740U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spark arrester manufacturing, in particular to a spark arrester structure for an exhaust pipe of an internal combustion engine. Background Art
[0002] A spark arrestor is a safety fire prevention and fire-blocking device installed on a motor vehicle or construction machinery, behind the exhaust pipe of the internal combustion engine, which allows the exhaust flow to pass through and prevents the flames and sparks in the exhaust flow from escaping from the exhaust port.
[0003] There are two main types of spark arresters on the market. One is small in size, with only a porous plate welded on the end face, which cannot effectively extinguish sparks. Due to the limited effective exhaust area, motor vehicles can only be used at low speed or idle, and construction machinery can only be used at no load or idle. Due to the small exhaust area and excessive exhaust back pressure, it cannot be used at high speed or full load; the other type, in order to achieve the spark extinguishing effect, is very large in size, high in cost, and requires a large installation space inside the equipment. The various spark arresters currently used in China, although they have a certain extinguishing ability, have large exhaust resistance loss, high fuel consumption rate, complex structure, and high cost, and their promotion and application are limited. Summary of the invention
[0004] The utility model aims to provide a spark arrester structure for an exhaust pipe of an internal combustion engine. The spark arrester has not only a simple structure, a small volume, and a low manufacturing cost, but also high exhaust efficiency and can effectively extinguish sparks.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a spark arrester structure for an internal combustion engine exhaust pipe, including a tube body, the tube body having a hollow cavity and having openings at both ends thereof and penetrating the hollow cavity, the front and rear openings of the tube body being respectively connected with a first porous mesh tube and a second porous mesh tube, the first porous mesh tube and the second porous mesh tube being both composed of a tube section outside the tube body, a tube section inside the tube body and a blind plate arranged at the bottom of the tube section inside the tube body, the tube section inside the tube body being composed of a porous mesh, and a mesh plate assembly being arranged along the cross section in the middle part of the tube body.
[0006] Furthermore, a flange is connected to the front end of the outer tube section of the first porous mesh tube to be connected to the engine exhaust pipe.
[0007] Furthermore, the diameters of the first porous mesh tube and the second porous mesh tube are adapted to the diameters of the engine exhaust pipe.
[0008] Furthermore, the tube body is composed of a front end expansion tube, a middle circular ring tube and a rear end reduction tube, the small end of the front end expansion tube is connected to the first porous mesh tube, the large end of the front end expansion tube is connected to the front end of the middle circular ring tube, the rear end of the middle circular ring tube is connected to the large end of the rear end reduction tube, and the small end of the rear end reduction tube is connected to the second porous mesh tube.
[0009] Furthermore, the mesh plate assembly is connected to the middle part of the middle circular ring tube.
[0010] Furthermore, the first porous mesh tube, the second porous mesh tube, the mesh plate assembly and the tube body are all connected by welding.
[0011] Furthermore, the outer pipe section and the inner pipe section, as well as the inner pipe section and the blind plate are connected by welding.
[0012] Furthermore, the tube body, the first porous mesh tube, and the second porous mesh tube are all stainless steel components, and the porous mesh constituting the inner tube section of the tube body is a stainless steel mesh.
[0013] Furthermore, the mesh plate assembly is composed of multiple layers of stainless steel mesh plates.
[0014] Furthermore, the thickness of the mesh plate assembly is 50 mm.
[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a spark arrester structure for an internal combustion engine exhaust pipe, which is not only simple in structure, small in size, and low in cost, but also can effectively ensure the extinguishing of sparks emitted from the exhaust port of the internal combustion engine while ensuring the effective exhaust area and without increasing the exhaust back pressure, which is convenient and efficient; by selecting spark arresters of corresponding specifications according to the exhaust volume of internal combustion engines of different specifications and models, the spark extinguishing requirements of internal combustion engines with different exhaust volumes can be met. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic structural diagram of a spark arrester according to an embodiment of the utility model. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0020] like Figure 1 As shown, this embodiment provides a spark arrester structure for an internal combustion engine exhaust pipe, including a tube body 1, wherein the tube body 1 has a hollow cavity and has openings at both ends thereof and penetrates the hollow cavity, and the front and rear openings of the tube body 1 are respectively connected to a first porous mesh tube 2 and a second porous mesh tube 3, wherein the first porous mesh tube 2 and the second porous mesh tube 3 are both composed of a tube section outside the tube body, a tube section inside the tube body 4, and a blind plate 5 arranged at the bottom of the tube section inside the tube body, the tube section inside the tube body 4 is composed of a porous mesh, and a mesh plate assembly 6 is arranged along the cross section in the middle of the tube body.
[0021] The design of the porous mesh on the first porous mesh tube 2 and the second porous mesh tube 3 can increase the effective ventilation area. By setting the first porous mesh tube 2 and the second porous mesh tube 3 with different lengths of the pipe body, the ventilation area required by different powers can be achieved. The blind plate 5 at the bottom of the pipe body section is designed so that the airflow cannot directly enter the main cavity of the pipe body 1, and must enter the main cavity of the pipe body 1 through the small circular holes of the porous mesh on the side, so that the sparks are blocked and collided by multiple layers to achieve the effect of spark extinguishing.
[0022] The diameters of the first porous mesh tube 2 and the second porous mesh tube 3 are adapted to the diameters of the engine exhaust pipe. In this embodiment, a flange 7 is connected to the front end of the outer tube section of the first porous mesh tube 2 to connect with the engine exhaust pipe. The flange connection can make the installation more secure and not easy to fall off.
[0023] In this embodiment, if Figure 1 As shown, the tube body 1 is composed of a front-end enlarged tube, a middle annular tube and a rear-end reduced tube, the small end of the front-end enlarged tube is connected to the first porous mesh tube 2, the large end of the front-end enlarged tube is connected to the front end of the middle annular tube, the rear end of the middle annular tube is connected to the large end of the rear-end reduced tube, and the small end of the rear-end reduced tube is connected to the second porous mesh tube 3. The mesh plate assembly 6 is connected to the middle of the middle annular tube.
[0024] In this embodiment, the first porous mesh tube 2, the second porous mesh tube 3, the mesh plate assembly 6 and the pipe body 1 are all connected by welding, and the outer pipe section and the inner pipe section, and the inner pipe section 4 and the blind plate 5 are also connected by welding, so as to ensure stable and reliable connection.
[0025] In this embodiment, the pipe body 1, the first porous mesh pipe 2, and the second porous mesh pipe 3 are all stainless steel components, and the porous mesh constituting the inner pipe section of the pipe body is a stainless steel mesh.
[0026] In this embodiment, the mesh assembly 6 is composed of multiple layers of stainless steel mesh, each layer of which is evenly arrayed with through holes, so that the sparks from the internal combustion engine can collide with them and be extinguished. The overall thickness of the mesh assembly 6 is about 50 mm.
[0027] In this embodiment, the mesh openings on the stainless steel mesh plate of the mesh plate assembly 6 are smaller than the mesh openings of the porous mesh of the first porous mesh tube 2 and the second porous mesh tube 3. The stainless steel mesh plate may be a mesh plate structure formed mainly of a stainless steel wire mesh.
[0028] Before using the spark arrester structure provided by the utility model, first select a spark arrester of corresponding specifications according to the exhaust volume of internal combustion engines of different specifications and models, and install it on the exhaust pipe of the engine. During operation, when the sparks emitted from the exhaust port of the internal combustion engine pass through this structure, they first pass through the first layer, that is, the porous mesh of the first porous mesh tube, to produce the first collision and extinguish. If there are still sparks, they will hit the cavity wall of the main cavity of the tube body 1 and eliminate some of the sparks. When it passes through the second layer, that is, the mesh assembly 6, the holes here are denser, and the remaining sparks will basically be eliminated. In order to ensure that there is no risk of error, the exhaust gas will turn and pass through the third layer, that is, the porous mesh of the second porous mesh tube, when it is discharged to ensure that all sparks are extinguished.
[0029] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.
Claims
1. A spark arrester structure for an exhaust pipe of an internal combustion engine, comprising a tube body, wherein the tube body has a hollow cavity and has openings at both ends thereof and penetrates the hollow cavity. It is characterized in that The front and rear openings of the tube body are respectively connected to a first porous mesh tube and a second porous mesh tube, both of which are composed of a tube section outside the tube body, a tube section inside the tube body and a blind plate arranged at the bottom of the tube section inside the tube body, the tube section inside the tube body is composed of a porous mesh, and a mesh plate assembly is arranged along the cross section in the middle of the tube body.
2. The internal combustion engine exhaust pipe spark arrester structure according to claim 1, It is characterized in that The front end of the outer tube section of the first porous mesh tube is connected with a flange to be connected to the engine exhaust pipe.
3. The internal combustion engine exhaust pipe spark arrester structure according to claim 1, It is characterized in that The diameters of the first porous mesh tube and the second porous mesh tube are adapted to the diameters of the engine exhaust pipe.
4. The internal combustion engine exhaust pipe spark arrester structure according to claim 1, It is characterized in that The tube body consists of a front end expansion tube, a middle circular ring tube and a rear end reduction tube, the small end of the front end expansion tube is connected to the first porous mesh tube, the large end of the front end expansion tube is connected to the front end of the middle circular ring tube, the rear end of the middle circular ring tube is connected to the large end of the rear end reduction tube, and the small end of the rear end reduction tube is connected to the second porous mesh tube.
5. The internal combustion engine exhaust pipe spark arrester structure according to claim 4, It is characterized in that The mesh plate assembly is connected to the middle part of the middle circular tube.
6. The internal combustion engine exhaust pipe spark arrester structure according to claim 1, It is characterized in that The first porous mesh tube, the second porous mesh tube, the mesh plate assembly and the tube body are all connected by welding.
7. The internal combustion engine exhaust pipe spark arrester structure according to claim 1, It is characterized in that The pipe section outside the pipe body and the pipe section inside the pipe body, and the pipe section inside the pipe body and the blind plate are all connected by welding.
8. The internal combustion engine exhaust pipe spark arrester structure according to claim 1, It is characterized in that The pipe body, the first porous mesh pipe and the second porous mesh pipe are all stainless steel components, and the porous mesh constituting the pipe section inside the pipe body is a stainless steel mesh.
9. The internal combustion engine exhaust pipe spark arrester structure according to claim 1, It is characterized in that The mesh plate assembly is composed of multiple layers of stainless steel mesh plates.
10. The internal combustion engine exhaust pipe spark arrester structure according to claim 1, It is characterized in that The thickness of the mesh plate assembly is 50 mm.