Dust explosion-proof flame arrester

Abstract

The utility model relates to the field of fire fighting, in particular to a dust explosion-proof flame arrester which comprises a shell, a spring, an air cylinder, an air cylinder push rod, a touch switch, a first filter plate and a second filter plate, the shell is of a tubular structure with the periphery closed, the shell is fixedly connected with a dust remover body, and the first filter plate is arranged at the end, close to the dust remover, of a shell pipeline; the second filter plate is arranged at the other end of the shell pipeline, the first filter plate comprises a first frame and a second frame, the first frame is movably connected with the inner wall of the shell, the second frame of the first filter plate is movably connected with one end of the spring, the upper wall in the shell further comprises a baffle for limiting overturning, and the second filter plate is fixedly connected with the inner wall of the shell; the air cylinder is fixed to the upper wall in the shell, the other end of the spring is fixed to the air cylinder, the air cylinder push rod is sleeved with the spring, and the touch switch is fixed to the upper end face of the air cylinder push rod. By arranging the spring, the air cylinder and the touch switch, the function of automatically removing excessive dust accumulated on the filter plate is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fire protection, specifically a dust explosion-proof flame arrester. Background Technology

[0002] Dust explosions in glass manufacturing plants often cause huge casualties and property losses. Explosion relief is one of the commonly used explosion prevention measures. However, the flame of the explosion relief can easily cause secondary explosions or fires. In recent years, flameless venting technology has been gradually applied to enterprises with explosive dust, playing a vital role in the prevention and control of dust combustion and explosion. Flameless explosion relief flame arresters and flameless pressure relief devices are mainly used for the protection of indoor dust explosions. They have no other operating costs, are easy to install, and do not require the installation of pressure relief pipes.

[0003] Most dust collectors are not equipped with flameless explosion arresters. When mixed with air during processing, handling, or storage operations, an explosion can cause the ignition of mist or dust, resulting in a rapid pressure rise in the confined structure. Since the dust contains glass fragments, the explosion can spread outside, causing significant damage and casualties.

[0004] The existing flameless flame arresters are prone to having their flameless filter plates clogged by dust, causing the flameless flame arresters to fail. This can lead to a sharp increase in pressure inside the dust collection chamber when a deflagration occurs, preventing the flameless filter plates from performing their normal flameless pressure relief function and thus posing an explosion risk. Utility Model Content

[0005] The technical problem this application aims to solve is to provide a dust explosion-proof flame arrester capable of automatically removing accumulated dust from a filter plate. This application achieves automatic vibration cleaning when excessive dust accumulates on the filter plate by installing a spring, a cylinder, and a touch switch behind the first filter plate, thus avoiding the risk of explosion due to blockage of the flameless filter plate and improving the safety factor of the factory.

[0006] The specific technical solution adopted in this application is as follows: A dust explosion-proof flame arrester includes a shell, a spring, a cylinder, a cylinder push rod, a touch switch, a first filter plate, and a second filter plate. The shell is a tubular structure with its four sides closed. The shell is fixedly connected to the body of the dust collector. The first filter plate is disposed at the end of the shell pipe near the dust collector, and the second filter plate is disposed at the other end of the shell pipe. The first filter plate includes a first frame and a second frame. The first frame is movably connected to the inner wall of the shell, and the second frame is movably connected to one end of the spring. The upper inner wall of the shell also includes a baffle that restricts the rotation of the first filter plate. The second filter plate is fixedly connected to the inner wall of the shell. The cylinder is fixed to the upper inner wall of the shell, and the other end of the spring is fixed to the cylinder. The cylinder push rod is sleeved inside the spring, and the touch switch is fixed to the upper end face of the cylinder push rod.

[0007] Preferably, the outer shell is an arc-shaped tubular outer shell.

[0008] Preferably, one end of the second filter plate of the arc-shaped tubular shell faces the main body of the dust removal machine.

[0009] Preferably, the first and second frames of the first filter plate are provided with at least one hinge, the first frame is hinged to the inner wall of the outer shell, and the second frame is hinged to a spring.

[0010] Preferably, the spring further includes a hinge seat, and the spring is hinged to the second frame of the first filter plate via the hinge seat.

[0011] Furthermore, a fixing seat is provided on the upper inner wall of the outer casing, and the cylinder is fixed to the inner wall of the outer casing through the fixing seat.

[0012] Furthermore, the housing is also provided with an access port, which is located on the upper part of the housing and is detachably connected to the housing.

[0013] Furthermore, the housing also includes a connecting flange with screw holes, and the housing and the dust collector body are fixed together by the connecting flange and bolts.

[0014] Furthermore, the first and second filter plates are made of metal.

[0015] Furthermore, the first filter plate and the second filter plate are filter plates with a microporous multilayer structure.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] Firstly, this application incorporates a spring, a cylinder, and a touch switch on the first filter plate. The first filter plate is compressed by the gravity of the dust, and the first filter plate touches the touch switch. This activates the cylinder, which pushes the cylinder rod to push the first filter plate back against the baffle, causing inertia and vibration. This causes a large amount of dust adhering to the first filter plate to fall off, thus achieving the function of automatic dust vibration removal. This avoids the risk of explosion due to blockage of the first filter plate and improves the safety factor of the factory.

[0018] Secondly, this application also provides an inspection port and a connecting flange on the outer shell. When the flame arrester malfunctions or requires regular maintenance, the inspection port can be removed or the entire flame arrester can be disassembled to inspect and maintain the inside of the flame arrester. This facilitates the maintenance work of technicians, improves work efficiency, and further reduces the risk of explosion due to blockage of the first filter plate.

[0019] Thirdly, this application adopts an arc-shaped tubular shell and is equipped with a second filter plate with the open end facing the dust collector body. The deflagration flame passes through two filter plates, and the residual heat of the flame is directed to the dust collector, further reducing the threat of deflagration flame to personnel and the environment. Attached Figure Description

[0020] Figure 1 This is a perspective view of the overall structure of the dust collector body installed in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the internal overall structure of the first filter plate in the embodiment of this application when there is no dust adhering to it;

[0022] Figure 3 This is a partial structural diagram of the spring area on the first filter plate of this application in a dust-free state.

[0023] Figure 4 This is a schematic diagram of the structure of the dust accumulation compression spring on the first filter plate in the embodiment of this application when it touches the cylinder push rod;

[0024] Figure 5 This is a schematic diagram of the overall external structure of an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the structure of the first filter plate in an embodiment of this application;

[0026] In the diagram: 1. Dust collector; 2. Outer shell; 21. Baffle; 22. Mounting base; 23. Inspection port; 3. Connecting flange; 401. First filter plate; 4011. First frame; 4012. Second frame; 402. Second filter plate; 5. Spring; 51. Hinge seat; 6. Cylinder; 7. Cylinder push rod; 8. Touch switch; 9. Screw hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application.

[0028] Therefore, the following detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely illustrates some embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] Example

[0030] Please see Figures 1 to 6This embodiment is a dust explosion-proof flame arrester, including a housing 2, a spring 5, a cylinder 6, a cylinder push rod 7, a touch switch 8, a first filter plate 401, and a second filter plate 402. The housing 2 is a tubular structure with its four sides closed. The housing 2 is fixedly connected to the body of the dust collector 1. The first filter plate 401 is disposed at the end of the pipe of the housing 2 near the dust collector 1, and the second filter plate 402 is disposed at the other end of the pipe of the housing 2. The first filter plate 401 includes a first frame 4011 and a second frame 4012. The first frame 4011 is movably connected to the inner wall of the housing 2, and the second frame 4012 of the first filter plate 401 is movably connected to one end of the spring 5. The inner upper wall of the housing 2 also includes a baffle 21 to limit the flipping angle of the first filter plate 401. The second filter plate 402 is fixedly connected to the inner wall of the housing 2. A fixing seat 22 is provided on the inner upper wall of the housing 2, and the cylinder 6 is fixed to the inner wall of the housing 2 through the fixing seat 22. The other end of the spring 5 is fixed to the cylinder 6, the cylinder push rod 7 is sleeved inside the spring 5, and the touch switch 8 is fixed to the upper end face of the cylinder push rod 7.

[0031] In this embodiment, a spring 5, a cylinder 6, and a touch switch 8 are installed on the first filter plate 401. The first filter plate 401 is compressed by the gravity of the dust, and the first filter plate 401 touches the touch switch 8. The cylinder 6 is activated to push the cylinder push rod 7 to push the first filter plate 401 back and hit the baffle 21. The impact generates strong vibration, causing a large amount of dust attached to the first filter plate 401 to fall off, thereby realizing the function of automatic dust vibration removal. This avoids the risk of explosion caused by the first filter plate 401 becoming blocked and improves the safety factor of the factory.

[0032] like Figure 2 As shown, in this embodiment, preferably, the outer shell 2 is an arc-shaped tubular shell, with one end of the second filter plate of the arc-shaped tubular shell 2 facing the body of the dust collector 1. When a dust deflagration occurs inside the dust collector 1, the resulting deflagration flame enters the flame arrester. After two flameless filtration and flame arrest by the first filter plate 401 and the second filter plate 402, the deflagration flame can be effectively eliminated. The residual heat of the flame is then guided to the dust collector 1, further reducing the threat of the deflagration flame to personnel and the environment around the dust collector 1.

[0033] like Figure 6 As shown, further, in this embodiment, the first frame 4011 of the first filter plate 401 is provided with three hinges, and the second frame 4012 is provided with one hinge. The first frame 4011 is hinged to the inner wall of the outer casing 2. The spring 5 also includes a hinge seat 51, and the spring 5 is hinged to the second frame 4012 of the first filter plate 401 through the hinge seat 51. The first filter plate 401 is movably connected by hinges to ensure that when it is subjected to dust pressure, the upper part of the first filter plate 401 can tilt down to touch the touch switch 8 inside the spring 5 to smoothly start the cylinder.

[0034] like Figure 5 As shown in this embodiment, the upper part of the outer shell 2 is also provided with an inspection port 23, which is detachably connected to the outer shell 2 by means of snap-fit ​​or screw connection. When the flame arrester malfunctions or requires regular maintenance, the inspection port can be removed to inspect and maintain the inside of the flame arrester, which facilitates the maintenance work of technicians, improves work efficiency, and further reduces the risk of explosion due to blockage of the first filter plate.

[0035] Furthermore, the outer casing 2 also includes a connecting flange 3, which has screw holes 9. The outer casing 2 and the dust collector 1 body are fixed together by the connecting flange 3 and bolts. Fixing the flame arrester by the connecting flange ensures its airtightness and impact resistance, ensuring that the deflagration flame will not leak out from the connection gap. The bolt fixing also makes it easier for technicians to disassemble the flame arrester for maintenance, improving maintenance efficiency.

[0036] Preferably, the first filter plate 401 and the second filter plate 402 are made of a microporous multilayer metal mesh. The metal mesh has a high melting point and will not be easily melted or damaged by a deflagration flame. The microporous multilayer structure effectively eliminates the flame, further preventing deflagration flames from erupting from the flame arrester and causing safety accidents.

[0037] The working process of this embodiment is as follows: During installation, the connecting flange 3 of the flame arrester and the flange of the dust collector 1 are aligned and fixed with bolts. In the initial state when the first filter plate 401 is free of dust, it is in contact with the baffle 21 due to the elastic force of the spring 5. The cylinder 6 is in the retracted state, and the touch switch 8 on the end face of the cylinder push rod 7 is separated from the first filter plate 401. Figure 3 As shown. After the flame arrester has been working for a period of time, dust gradually accumulates on the first filter plate 401, compressing the spring 5 and causing it to gradually contract. The second frame 4012 of the first filter plate 401 gradually moves towards the cylinder push rod 7 until it touches the touch switch 8 located at the upper end of the cylinder push rod 7. Figure 4 As shown, when cylinder 6 is activated, cylinder 6 pushes cylinder push rod 7 to push the first filter plate 401 back and hit the baffle 21. The impact generates strong vibration, causing the dust attached to the first filter plate 401 to fall off, thus completing the automatic dust removal process.

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0039] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A dust explosion-proof flame arrester, characterized in that, The system includes a housing (2), a spring (5), a cylinder (6), a cylinder push rod (7), a touch switch (8), a first filter plate (401), and a second filter plate (402). The housing (2) is a tubular structure with its sides closed. The housing (2) is fixedly connected to the body of the dust collector (1). The first filter plate (401) is located at the end of the housing (2) pipe near the dust collector (1), and the second filter plate (402) is located at the other end of the housing (2) pipe. The first filter plate (401) includes a first frame (4011) and a second frame (4012). A frame (4011) is movably connected to the inner wall of the outer shell (2), and the second frame (4012) is movably connected to one end of the spring (5). The inner upper wall of the outer shell (2) also includes a baffle (21) that restricts the first filter plate (401) from flipping. The second filter plate (402) is fixedly connected to the inner wall of the outer shell (2). The cylinder (6) is fixed to the inner upper wall of the outer shell (2). The other end of the spring (5) is fixed to the cylinder (6). The cylinder push rod (7) is sleeved inside the spring (5). The touch switch (8) is fixed to the upper end face of the cylinder push rod (7).

2. The dust explosion-proof flame arrester according to claim 1, characterized in that, The outer shell (2) is an arc-shaped tubular shell.

3. The dust explosion-proof flame arrester according to claim 2, characterized in that, One end of the second filter plate (402) of the arc-shaped tubular shell (2) faces the body of the dust collector (1).

4. The dust explosion-proof flame arrester according to claim 1, characterized in that, The first filter plate (401) has at least one hinge on its first frame (4011) and second frame (4012). The first frame (4011) is hinged to the inner wall of the outer shell (2), and the second frame (4012) is hinged to the spring (5).

5. The dust explosion-proof flame arrester according to claim 4, characterized in that, The spring (5) also includes a hinge seat (51), and the spring (5) is hinged to the second frame (4012) of the first filter plate (401) via the hinge seat (51).

6. The dust explosion-proof flame arrester according to claim 1, characterized in that, The upper inner wall of the outer shell (2) is also provided with a fixing seat (22), and the cylinder (6) is fixed to the inner wall of the outer shell (2) through the fixing seat (22).

7. The dust explosion-proof flame arrester according to claim 1, characterized in that, The upper part of the outer shell (2) is also provided with an inspection port (23), which is detachably connected to the outer shell (2).

8. The dust explosion-proof flame arrester according to claim 1, characterized in that, The outer casing (2) also includes a connecting flange (3), which has screw holes (9). The outer casing (2) and the dust collector (1) body are fixed together by the connecting flange (3) and bolts.

9. The dust explosion-proof flame arrester according to claim 1, characterized in that, The first filter plate (401) and the second filter plate (402) are made of metal.

10. The dust explosion-proof flame arrester according to claim 1, characterized in that, The first filter plate (401) and the second filter plate (402) are filter plates with a microporous multilayer structure.

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