Flame arrester

Abstract

The utility model discloses a flame arrester which comprises a chuck, a middle shell and a flange, an air inlet and an air outlet are formed in the two ends of the middle shell respectively, the chuck and the flange are arranged at the two ends of the middle shell respectively, the chuck is connected with the middle shell and communicated with the air inlet, and the air inlet is communicated with the air outlet. The flange is connected with the middle shell and communicated with the air outlet, and a core assembly used for fire retardance is arranged in the middle shell. The chuck is arranged at the air inlet end, the weight and the size of the device can be effectively reduced, and therefore the device is more convenient to install in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, in particular to a flame arrester. Background Art

[0002] A diesel engine is a thermal energy machine that burns diesel to convert chemical energy into mechanical energy. The flame arrester is one of the key components of an explosion-proof diesel engine. It is installed on the intake pipe and is an explosion-proof performance part of the intake system of an explosion-proof diesel engine.

[0003] When the existing flame arrester is installed on the explosion-proof diesel engine, flanges are often welded at the air inlet and the air outlet, which increases the overall weight of the flame arrester and hinders the installation of the flame arrester due to the large size of the flange. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes a flame arrester, and a chuck is arranged at the air inlet end, which can effectively reduce the weight and volume of the device, thereby making the device more convenient to install during use.

[0006] (II) Technical solution

[0007] The utility model provides a flame arrester, comprising a chuck, an intermediate shell and a flange, wherein two ends of the intermediate shell are respectively provided with an air inlet and an air outlet, the chuck and the flange are respectively arranged at two ends of the intermediate shell, the chuck is connected to the intermediate shell and communicated with the air inlet, the flange is connected to the intermediate shell and communicated with the air outlet, and a core component for fire arresting is arranged in the intermediate shell.

[0008] Preferably, a first reducing shell is provided between the chuck and the intermediate shell, two ends of the first reducing shell are respectively connected to the chuck and the intermediate shell, and an inner diameter of the first reducing shell gradually increases from the chuck toward one end of the intermediate shell.

[0009] Preferably, the inner diameter of the air outlet gradually decreases from the intermediate shell toward one end of the flange.

[0010] Preferably, the core assembly includes a fire-blocking core unit, a rib plate and a bolt, the fire-blocking core unit is arranged in the intermediate shell and horizontally arranged in the intermediate shell, and the two rib plates are respectively arranged at both ends of the fire-blocking core unit, the rib plate is provided with a through hole for the bolt to pass through, one end of the bolt passes through one of the through holes and the fire-blocking core unit in sequence, and extends out of the other through hole, one end of the bolt abuts against one of the rib plates, and the other end of the bolt is coaxially provided with a nut, the nut abuts against the other rib plate, and the outer peripheral surface of the fire-blocking core unit is interference fit with the inner wall of the intermediate shell.

[0011] Preferably, the fire-blocking core unit comprises a plurality of corrugated belts and a plurality of flat belts, the inner wall of the intermediate shell and the outer end of the bolt are coaxially provided with flat belts connected end to end, the flat belts are interference fit with the inner wall of the intermediate shell, a plurality of corrugated belts connected end to end and a plurality of flat belts connected end to end are arranged between two of the flat belts, and the plurality of corrugated belts and the plurality of flat belts are alternately arranged.

[0012] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0013] In the utility model, when the device is in use, the air intake operation is performed by connecting with other devices through a chuck, and the flange is connected to the intake manifold, and the gas is discharged from the outlet after passing through the core assembly for heat transfer and cooling. Since the air intake end of the device does not need to meet the explosion-proof requirements, the device is provided with a chuck at the air intake end, which can effectively reduce the weight and volume of the device, thereby making the device more convenient to install during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the internal structure of a flame arrester proposed by the utility model.

[0015] Figure 2 The figure is a side structural schematic diagram of a flame arrester proposed by the utility model.

[0016] Figure 3 The utility model provides a structural schematic diagram of a flame arrester core unit in the flame arrester.

[0017] Figure 4 The utility model is a structural schematic diagram of a ribbed plate in a flame arrester.

[0018] Figure numerals: 1. chuck; 2. intermediate shell; 3. flange; 4. first reducer shell; 5. ribbed plate; 6. bolt; 7. corrugated belt; 8. flat belt. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0020] In the description of the utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, welding, riveting, bonding, etc., or a detachable connection, threaded connection, key connection, pin connection, etc., or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or 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 this utility model can be understood according to specific circumstances.

[0022] like Figure 1-4 As shown, a flame arrester proposed in the utility model includes a chuck 1, an intermediate shell 2 and a flange 3, wherein the two ends of the intermediate shell 2 are respectively provided with an air inlet and an air outlet, the chuck 1 and the flange 3 are respectively arranged at the two ends of the intermediate shell 2, the chuck 1 is connected to the intermediate shell 2 and communicated with the air inlet, the flange 3 is connected to the intermediate shell 2 and communicated with the air outlet, and a core assembly for fire arresting is provided in the intermediate shell 2.

[0023] In the utility model, when the device is in use, the chuck 1 is connected to other devices for air intake operation, and the flange 3 is connected to the intake manifold, and the gas is discharged from the outlet after passing through the core assembly for heat transfer and cooling. Since the air intake end of the device does not need to meet the explosion-proof requirements, the chuck 1 is set at the air intake end of the device, which can effectively reduce the weight and volume of the device, thereby making the device more convenient to install during use.

[0024] In an optional embodiment, a first reducing shell 4 is provided between the chuck 1 and the middle shell 2, and two ends of the first reducing shell 4 are respectively connected to the chuck 1 and the middle shell 2, and an inner diameter of the first reducing shell 4 gradually increases from the chuck 1 toward one end of the middle shell 2. By gradually increasing the inner diameter of the first reducing shell 4 from the chuck 1 toward one end of the middle shell 2, the resistance of gas entering the middle shell 2 can be effectively reduced, and the flow area of ​​the gas can be effectively expanded to ensure the gas flow during use.

[0025] In an optional embodiment, the inner diameter of the gas outlet gradually decreases from the intermediate shell 2 toward one end of the flange 3. The inner diameter of the gas outlet gradually decreases from the intermediate shell 2 toward one end of the flange 3, so that the device can effectively transition the gas when exhausting, and can better adapt to the flange 3 at the gas outlet end.

[0026] In an optional embodiment, the core assembly includes a fire-blocking core unit, a rib plate 5 and a bolt 6. The fire-blocking core unit is arranged in the intermediate shell 2 and horizontally arranged in the intermediate shell 2, and the two rib plates 5 are respectively arranged at both ends of the fire-blocking core unit. The rib plate 5 is provided with a through hole for the bolt 6 to pass through. One end of the bolt 6 passes through one of the through holes and the fire-blocking core unit in turn, and extends out of the other through hole. One end of the bolt 6 abuts against one of the rib plates 5, and the other end of the bolt 6 is coaxially provided with a nut, and the nut abuts against the other rib plate 5. The outer peripheral surface of the fire-blocking core unit is interference fit with the inner wall of the intermediate shell 2, and the distance between the two rib plates is limited by the bolt 6 and the nut, and the installation of the fire-blocking core unit can be completed by the two rib plates, and the installation of the entire core assembly is completed without the action of other matching components by the interference fit between the fire-blocking core unit and the inner wall of the intermediate shell 2.

[0027] In an optional embodiment, the fire-blocking core unit includes a plurality of corrugated belts 7 and a plurality of flat belts 8. Flat belts 8 connected end to end are coaxially provided on the inner wall of the intermediate shell 2 and the outer end of the bolt 6. The flat belt 8 has an interference fit with the inner wall of the intermediate shell 2. A plurality of corrugated belts 7 connected end to end and a plurality of flat belts 8 connected end to end are arranged between two of the flat belts 8. The plurality of corrugated belts 7 and the plurality of flat belts 8 are alternately arranged. By interlocking and connecting the corrugated belts 7 and the flat belts 8 end to end, and cooperating with the intermediate shell 2, the passing gas can be effectively dissipated. It is also very convenient to install the corrugated belts 7 and the flat belts 8. It is only necessary to interlock and sleeve the corrugated belts 7 and the flat belts 8 with different inner diameters in turn on the bolt 6. The core assembly can be effectively installed by interlocking the flat belts 8 with the shell of the intermediate shell 2.

[0028] The effective width of the explosion-proof joint surface shall not be less than 25mm, the surface roughness Ra of the explosion-proof joint surface shall not be less than 6.3m, the flatness shall not be greater than 0.15mm, and the effective width from the inner edge of the explosion-proof joint surface to the edge of the bolt 6 hole shall not be less than 9mm.

[0029] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A flame arrester, characterized in that: The invention comprises a chuck (1), an intermediate shell (2) and a flange (3), wherein an air inlet and an air outlet are respectively arranged at two ends of the intermediate shell (2), the chuck (1) and the flange (3) are respectively arranged at two ends of the intermediate shell (2), the chuck (1) is connected to the intermediate shell (2) and communicates with the air inlet, the flange (3) is connected to the intermediate shell (2) and communicates with the air outlet, and a core assembly for fire prevention is arranged inside the intermediate shell (2).

2. A flame arrester according to claim 1, characterized in that: A first reducing shell (4) is provided between the chuck (1) and the intermediate shell (2); two ends of the first reducing shell (4) are respectively connected to the chuck (1) and the intermediate shell (2); and the inner diameter of the first reducing shell (4) gradually increases from the chuck (1) towards one end of the intermediate shell (2).

3. A flame arrester according to claim 1, characterized in that: The inner diameter of the air outlet gradually decreases from the intermediate shell (2) toward one end of the flange (3).

4. A flame arrester according to claim 1, characterized in that: The core assembly comprises a fire-blocking core unit, a rib plate (5) and a bolt (6); the fire-blocking core unit is arranged in the intermediate shell (2) and is arranged horizontally in the intermediate shell (2); and two rib plates (5) are arranged at two ends of the fire-blocking core unit, respectively; the rib plate (5) is provided with a through hole for the bolt (6) to pass through; one end of the bolt (6) passes through one of the through holes and the fire-blocking core unit in sequence and extends out of the other through hole; one end of the bolt (6) abuts against one of the rib plates (5); the other end of the bolt (6) is coaxially provided with a nut, and the nut abuts against the other rib plate (5); and the outer peripheral surface of the fire-blocking core unit is interference fit with the inner wall of the intermediate shell (2).

5. A flame arrester according to claim 4, characterized in that: The fire-blocking core unit comprises a plurality of corrugated belts (7) and a plurality of flat belts (8); the inner wall of the intermediate shell (2) and the outer end of the bolt (6) are coaxially provided with flat belts (8) connected end to end; the flat belts (8) are interference fit with the inner wall of the intermediate shell (2); a plurality of corrugated belts (7) connected end to end and a plurality of flat belts (8) connected end to end are arranged between two flat belts (8); and the plurality of corrugated belts (7) and the plurality of flat belts (8) are alternately arranged.

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