A flame arrestor that is easily cleaned and replaced

Abstract

The application discloses a fire arrester convenient to clean and replace, relates to the field of industrial chemical pipeline safety, and comprises two shells, the two shells are connected through a connecting assembly, a filter core assembly is arranged between the two shells, the shells are internally provided with protection edges, the filter core assembly is arranged between the two protection edges, and the filter core assembly comprises at least two circular filter plates, and the filter plate comprises two circular filter sub-plates. The fire arrester convenient to clean and replace has the advantages that the communicating pipe is connected with a water bucket containing cleaning liquid, then the cleaning liquid is extruded into the communicating pipe through a water pump, the cleaning liquid enters the inside of each filter hole along the first through groove and the second through groove, and since the diameters of the first through groove and the second through groove are small, a certain pressure is generated when the cleaning liquid flows, the cleaning is more clean, and the fire arrester is more convenient to clean.

Description

Technical Field

[0001] This invention relates to the field of industrial chemical pipeline safety, and in particular to a flame arrester that is easy to clean and replace. Background Technology

[0002] Flame arresters are safety devices used to prevent the spread of flames from flammable gases and liquid vapors. They are generally installed in pipelines transporting flammable gases. Corrugated flame arresters are a common type of flame arrester. They can prevent the violent flames of deflagration and can withstand corresponding mechanical and thermal effects. They have low flow resistance and are easy to clean and install. Flame arresters enhance heat transfer by increasing the contact area between the small flame and the channel wall, thus reducing the flame temperature below the ignition point and preventing the flame from spreading. Furthermore, when the burning gas passes through the narrow channel of the flame arrestor element, the probability of free radicals colliding with the channel wall increases, and the number of free radicals participating in the reaction decreases, thereby achieving the purpose of flame arrest.

[0003] When cleaning a flame arrester, the internal filter element needs to be removed from the inside of the outer shell. Therefore, the entire flame arrester needs to be removed from the pipeline. It is relatively easy to disassemble it using bolts. However, in order to ensure a higher level of cleanliness, it is necessary to disassemble it completely, which is very cumbersome. Moreover, in order to ensure tightness during the initial assembly, the mounting flanges between the outer shells were installed very tightly with bolts, which makes disassembly very difficult. Summary of the Invention

[0004] The main objective of this invention is to provide a flame arrester that is easy to clean and replace, which can effectively solve the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a flame arrester that is easy to clean and replace, comprising two housings, the two housings being connected by a connecting assembly, a filter element assembly being installed between the two housings, a protective rim being provided inside the housings, and the filter element assembly being installed between the two protective rims;

[0006] The filter element assembly includes at least two circular filter plates, each filter plate including two circular filter dividers. The two filter dividers are fixedly connected by an installation assembly. The filter holes on the surface of the filter dividers are all inclined, and the path slopes of the filter holes at corresponding positions are the same. A plurality of annular first through grooves are provided between the two filter dividers, and a linear second through groove is provided between the two filter dividers. The second through groove connects to the interior of the plurality of first through grooves. A connecting pipe is installed inside the second through groove, and the connecting pipe extends to the outside of the housing and is equipped with a one-way valve.

[0007] The two housings are fitted with mounting flanges at opposite ends, and the mounting flanges are connected to external pipes.

[0008] The mounting assembly includes multiple connecting plates, which are fixedly mounted on the surface of the filter plate. The surface of each connecting plate has threaded slots, and the paths of the threaded slots of the corresponding connecting plates are matched. Bolts are installed inside the threaded slots, and one end of each bolt extends to one side of the two connecting plates and is fitted with a fixing nut.

[0009] Multiple positioning rods are installed on one side of the connecting plate, and multiple positioning slots are opened on the other side of the connecting plate. The positioning rods are movably inserted into the interior of the positioning slots. A first silicone rubber is provided between the two filter plates, and the positioning rods movably pass through the first silicone rubber. A second silicone rubber is installed on the filter plate at the end that is prone to fire. The side of the second silicone rubber is flush with the side of the filter plate. The surface of the second silicone rubber abuts against the side of one of the protective edges. The connecting plate near the other protective edge abuts against the surface of the protective edge. Multiple locking slots are opened on the surface of the protective edge at this position, and the positioning rods are movably installed inside the locking slots.

[0010] A first threaded groove is formed between the two filter plates, and a second threaded groove is formed on the surface of one end of the connecting pipe. The connecting pipe is connected to the inside of the first threaded groove through the second threaded groove, and the diameter of the second threaded groove is larger than the diameter of the second threaded groove.

[0011] A switch valve is also installed at the end of the connecting pipe. The one-way valve is installed in the middle of the connecting pipe, and the switch valve is closer to the end of the connecting pipe.

[0012] The filter holes at corresponding positions of adjacent filter plates are connected internally, and their tilting directions are completely opposite.

[0013] One of the housings has multiple electromagnetic blocks embedded in its sidewall, which are equidistantly arranged along the edge of the housing. The electromagnetic blocks are powered through the housing and extend to the outside of the housing. The other housing has a magnet inside.

[0014] A pressure sensor is embedded in the side surface of one of the housings.

[0015] One of the housings has multiple mounting rods fixedly installed on its side, and the other housing has multiple mounting slots on its side. The mounting rods are movably installed inside the mounting slots. A circular transverse slot is provided between the two housings, and the connecting pipe movably passes through the transverse slot.

[0016] The connecting plate, the first silicone rubber, and the second silicone rubber are all configured in a fan shape.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this invention, a connecting pipe, a first channel, and a second channel are provided. The connecting pipe is connected to a water tank containing cleaning liquid. Then, a water pump forces the cleaning liquid into the interior of the connecting pipe. The cleaning liquid then flows along the first and second channels into the interior of each filter hole. Since the diameters of the first and second channels are small, a certain pressure is generated when the cleaning liquid flows, ensuring a more thorough cleaning and making it easier to clean the flame arrester.

[0019] 2. In this invention, by setting a positioning rod, a positioning groove, a bolt, and a fixing nut, the positioning rod is locked inside the positioning groove, and the bolt is rotated into the threaded slot. Then the fixing nut is installed. The installation method is simple and convenient. Furthermore, the two filter plates can be disassembled, thereby exposing the first channel, the second channel, and the filter holes inside to the air. Workers can use external tools to clean the inside more thoroughly. The structure is simple and easy to operate.

[0020] 3. In this invention, by setting a filter plate with inclined filter holes, the flame enters the interior of the inclined filter holes and travels a longer path. Therefore, the heat absorption capacity of the filter plate is enhanced. Furthermore, when free radicals pass through the inclined filter holes, more free radicals collide with the interior of the filter holes, thus enhancing the flame-retardant ability.

[0021] 4. In this invention, by setting a check valve and a switching valve, the main purpose of the check valve is to prevent gas leakage from inside the chemical pipeline and to ensure that the cleaning liquid can enter the filter hole from the outside. However, since the check valve may have some problems during use, it is used in conjunction with the switching valve to ensure better sealing. In addition, the check valve can also play an auxiliary role when the switching valve is forgotten to be closed.

[0022] 5. In this invention, an electromagnetic block, a mounting rod, and a mounting groove are arranged. The mounting rod is inserted into the mounting groove, and then the electromagnetic block is activated. The magnetic attraction of the electromagnetic block tightly connects the two housings until the pressure sensor detects a certain pressure, which ensures that the connection between the two housings is tight. Compared with the traditional method that requires multiple screws for connection, this installation method is simpler and more convenient to disassemble. The power can be turned off directly, making it easier to clean the flame arrester. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a flame arrester that is easy to clean and replace according to the present invention.

[0024] Figure 2 This is a schematic diagram of the mounting rod position of a flame arrester that is easy to clean and replace according to the present invention.

[0025] Figure 3 This is a schematic diagram of the mounting slot position of a flame arrester that is easy to clean and replace according to the present invention.

[0026] Figure 4 This is a schematic diagram of the first silicone rubber position portion of a flame arrester that is easy to clean and replace according to the present invention.

[0027] Figure 5 This is a schematic diagram of the threaded slot position of a flame arrester that is easy to clean and replace according to the present invention.

[0028] Figure 6 This is a schematic diagram of the positioning rod position portion of a flame arrester that is easy to clean and replace according to the present invention.

[0029] Figure 7 This is a schematic diagram of the positioning groove of a flame arrester that is easy to clean and replace according to the present invention.

[0030] Figure 8 This is a schematic diagram of the first through groove portion of a flame arrester that is easy to clean and replace according to the present invention.

[0031] Figure 9 This is a cross-sectional view of the filter plate of a flame arrester that is easy to clean and replace according to the present invention.

[0032] In the diagram: 1. Housing; 2. Protective edge; 3. Filter plate; 4. First through groove; 5. Second through groove; 6. Connecting pipe; 7. Check valve; 8. Mounting flange; 9. Connecting plate; 10. Threaded slot; 11. Bolt; 12. Fixing nut; 13. Positioning rod; 14. Positioning groove; 15. First silicone rubber; 16. Second silicone rubber; 17. Locking groove; 18. First threaded groove; 19. Second threaded groove; 20. Switching valve; 21. Electromagnetic block; 22. Pressure sensor; 23. Mounting rod; 24. Mounting groove; 25. Horizontal groove. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figure 1-9 As shown, a flame arrester that is easy to clean and replace includes two housings 1, which are an air inlet housing and an air outlet housing, respectively. The two housings 1 are connected by a connecting assembly. A filter element assembly, which is a fireproof core, is installed between the two housings 1. A protective edge 2 is provided inside the housing 1. The protective edge 2 is an integral structure with the housing 1. The filter element assembly is installed between the two protective edges 2.

[0035] The filter element assembly includes at least two circular filter plates, the diameter of which is exactly the same as the inner diameter of the protective edge 2. Each filter plate includes two circular filter dividers 3, which are fixedly connected by an installation assembly. The filter holes on the surface of each filter divider 3 are all inclined, and there are multiple filter holes arranged in a ring array on the surface of the filter divider 3. The slope of the path of the filter holes at corresponding positions is the same. Multiple annular first through grooves 4 are provided between the two filter dividers 3, and the first through grooves 4 connect the interior of each ring of filter holes. A straight second through groove 5 is provided between the two filter dividers 3, and the second through groove 5 connects the interior of the multiple first through grooves 4, so that the interior of each filter hole is connected. A connecting pipe 6 is installed inside the second through groove 5. The connecting pipe 6 extends to the outside of the housing 1 and is equipped with a one-way valve 7. The one-way valve 7 can only be opened from the outside to the inside of the connecting pipe 6.

[0036] Mounting flanges 8 are installed at the opposite ends of the two housings 1, and the mounting flanges 8 are connected to external pipes.

[0037] First, the flame arrester is installed as a whole, directly connected to the chemical pipeline via mounting flange 8. When a fire occurs, the flame passes through multiple small-diameter filter holes, achieving the purpose of flame arrest. Although the flame may extend into the interior of the first channel 4 and the second channel 5, the one-way valve 7 can seal the interior. During long-term use, a lot of grease and dust will accumulate inside the filter holes, requiring cleaning. Simply connect the connecting pipe 6 to a tank containing cleaning solution, and then use a water pump to squeeze the cleaning solution into the interior of the connecting pipe 6. The cleaning solution will then enter the interior of each filter hole along the first channel 4 and the second channel 5. Because the diameter of the first channel 4 and the second channel 5 is small, a certain pressure will be generated when the cleaning solution flows, ensuring a more thorough cleaning. During this process, it is not even necessary to remove the flame arrester, making it more convenient to clean the flame arrester.

[0038] The installation assembly includes multiple connecting plates 9 arranged in a ring on the surface of the filter plate 3. The connecting plates 9 and the filter plate 3 are an integral structure. The multiple connecting plates 9 are fixedly installed on the surface of the filter plate 3. The surface of the connecting plates 9 is provided with threaded slots 10. The paths of the threaded slots 10 of the connecting plates 9 at corresponding positions are matched. Bolts 11 are installed inside the threaded slots 10 to ensure that the bolts 11 can be installed more smoothly and stably during installation. One end of the bolt 11 extends to one side of the two connecting plates 9 and is fitted with a fixing nut 12. The fixing nut 12 is tightly attached to the surface of the connecting plate 9.

[0039] Multiple positioning rods 13 are installed on one side of the connecting plate 9. In this embodiment, four positioning rods 13 are provided. Multiple positioning slots 14 are provided on the other side of the connecting plate 9. The positioning rods 13 are movably inserted into the positioning slots 14. A first silicone rubber 15 is provided between the two filter plates. The positioning rods 13 movably pass through the first silicone rubber 15. A second silicone rubber 16 is installed on the end of the filter plate corresponding to the end that is prone to fire. The side of the second silicone rubber 16 is flush with the side of the filter plate. The surface of the second silicone rubber 16 abuts against the side of one of the protective edges 2. The connecting plate 9 near the other protective edge 2 abuts against the surface of the protective edge 2. Multiple locking slots 17 are provided on the surface of the protective edge 2 at this position. The positioning rods 13 are movably installed inside the locking slots 17.

[0040] When installing the filter plate 3, the positioning rod 13 is inserted into the positioning groove 14, and the bolt 11 is rotated into the threaded slot 10. Then, the fixing nut 12 is installed. The installation method is simple and convenient. After installation, the first silicone rubber 15 is installed between the connecting plates 9 of the two adjacent filter plates to increase the sealing between them. Then, the second silicone rubber 16 is installed between the protective edge 2 and the corresponding connecting plate 9. Finally, the positioning rod 13 is inserted into the locking groove 17. At this time, not only can the installation position of the filter plate be fixed, but also because silicone rubber has a certain elasticity and its high temperature resistance reaches 300℃, while the high temperature resistance of general industrial pipelines is 120℃, it fully meets the sealing function.

[0041] A first threaded groove 18 is provided between the two filter plates 3. The diameter of the first threaded groove 18 is larger than the diameter of the second through groove 5. When the cleaning liquid enters the interior of the second through groove 5, the flow path decreases, thus increasing the impact force of the cleaning liquid. A second threaded groove 19 is provided on the surface of one end of the connecting pipe 6. The connecting pipe 6 is connected to the interior of the first threaded groove 18 through the second threaded groove 19. The diameter of the second threaded groove 19 is larger than the diameter of the second through groove 5.

[0042] When installing the connecting pipe 6, simply align the second threaded groove 19 with the position of the first threaded groove 18 and rotate to install. If safety is required, the user can choose to install a sealing valve at the position of the first threaded groove 18. The sealing valve is completely located inside the housing 1. In this case, tilting will be more complicated, as the internal flame arrestor core needs to be completely disassembled for cleaning. However, the sealing performance is better and the installation performance is also higher.

[0043] A switch valve 20 is also installed at the end of the connecting pipe 6, and the one-way valve 7 is installed in the middle of the connecting pipe 6. The switch valve 20 is closer to the end of the connecting pipe 6.

[0044] The main purpose of the check valve 7 is to prevent gas leakage from inside the chemical pipeline and to ensure that the cleaning liquid can enter the filter hole from the outside. However, since the check valve 7 may have some problems during use, it is used in conjunction with the switch valve 20 to ensure better sealing. In addition, the check valve 7 can also play an auxiliary role when the switch valve 20 is forgotten to be closed.

[0045] The filter holes at corresponding positions of adjacent filter plates are connected internally, and their tilting directions are completely opposite.

[0046] Because the flame is divided into many small parts as it passes through the filter holes, the path it takes to enter the inclined filter holes is longer. Therefore, the heat absorption capacity of the filter plate 3 is enhanced. Furthermore, more free radicals collide with the filter holes as they pass through them, resulting in a stronger flame-retardant capability. The more filter plates are stacked, the stronger the flame-retardant capability becomes, without affecting the transmission of industrial gases.

[0047] One of the housings 1 has multiple electromagnetic blocks 21 embedded in its side wall. The electromagnetic blocks 21 are equidistantly arranged on the edge of the housing 1 to ensure that the connection force between the two housings 1 is more uniform when the electromagnetic blocks 21 are activated. The power supply of the electromagnetic blocks 21 passes through the housing 1 and extends to the outside of the housing 1. The other housing 1 has a magnet inside. The power supply of the electromagnetic blocks 21 needs to be configured separately to ensure its long-term operation.

[0048] One of the housings 1 has a pressure sensor 22 embedded on its side surface, which, in conjunction with the alarm device, determines whether the two housings 1 are tightly connected.

[0049] One of the housings 1 has multiple mounting rods 23 fixedly arranged on its side, arranged in a circular array on the surface of the housing 1. The other housing 1 has multiple mounting slots 24 on its side, with the positions of the mounting slots 24 corresponding one-to-one with the positions of the mounting rods 23. The mounting rods 23 are movably installed inside the mounting slots 24. A circular transverse groove 25 is provided between the two housings 1, and the connecting pipe 6 movably passes through the transverse groove 25. The transverse groove 25 relatively fixes the connecting pipe 6 and also plays a certain limiting role.

[0050] When installing the two housings 1, the mounting rod 23 is inserted into the mounting slot 24 to ensure that the housing 1 does not shift during installation. Then, the electromagnetic block 21 is activated, and the magnetic attraction of the electromagnetic block 21 is used to tightly connect the two housings 1 until the pressure sensor 22 detects a certain pressure to ensure that the connection between the two housings 1 is tight. Compared with the traditional method that requires multiple screws for connection, this installation method is simpler and very convenient to disassemble. The power can be turned off directly, making it easier to clean the flame arrester.

[0051] The connecting plate 9, the first silicone rubber 15, and the second silicone rubber 16 are all configured in a fan shape.

[0052] It should be noted that this invention is a flame arrester that is easy to clean and replace. In use, the positioning rod 13 is engaged inside the positioning groove 14, and the bolt 11 is rotated into the threaded slot 10. Then, the fixing nut 12 is installed. The installation method is simple and convenient. After installation, the first silicone rubber 15 is installed between the connecting plates 9 of two adjacent filter plates. Next, the second silicone rubber 16 is installed between the protective edge 2 and the corresponding connecting plate 9. Finally, the positioning rod 13 is engaged inside the positioning groove 17. Then, the second threaded slot 19 is aligned with the position of the first threaded slot 18, and the connecting pipe 6 is installed. Finally, the installation rod 23 is inserted into the installation groove 24 to ensure that the housing 1 does not shift during installation. Then, the electromagnetic block 21 is activated, using its magnetic attraction to tightly connect the two housings 1 until the pressure sensor 22 detects a certain pressure, ensuring a tight connection between the two housings 1. Next, it is directly connected to the chemical pipeline via the mounting flange 8. Since the flame is divided into many small parts as it passes through the filter holes, the path it travels along the way is longer when it enters the inclined filter holes. Therefore, the heat absorption capacity of the filter plate 3 is enhanced at this time, and more free radicals collide with the inside of the filter holes when passing through the inclined filter holes, so its flame arresting ability is stronger. When it is necessary to clean the inside of the filter holes, the switch valve 20 is opened, and the connecting pipe 6 is connected to a water tank containing cleaning fluid. Then, the cleaning fluid is squeezed into the inside of the connecting pipe 6 by the water pump. The cleaning fluid will enter the inside of each filter hole along the first channel 4 and the second channel 5. Since the diameter of the first channel 4 and the second channel 5 is small, a certain pressure will be generated when the cleaning fluid flows, ensuring a cleaner cleaning. In this process, it is not even necessary to remove the flame arrester, making it more convenient to clean the flame arrester.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A flame arrester that is easy to clean and replace, comprising two housings (1), the two housings (1) being connected by a connecting assembly, and a filter element assembly being installed between the two housings (1), characterized in that: The housing (1) is provided with a protective edge (2) inside, and the filter element assembly is installed between two of the protective edges (2); The filter element assembly includes at least two circular filter plates, each filter plate including two circular filter dividers (3). The two filter dividers (3) are fixedly connected by an installation assembly. The filter holes on the surface of the filter dividers (3) are all inclined, and the path slope of the filter holes at corresponding positions is the same. Multiple annular first through grooves (4) are provided between the two filter dividers (3), and a straight second through groove (5) is provided between the two filter dividers (3). The second through groove (5) connects to the interior of the multiple first through grooves (4). A connecting pipe (6) is installed inside the second through groove (5). The connecting pipe (6) extends to the outside of the housing (1) and is equipped with a one-way valve (7). Mounting flanges (8) are installed at opposite ends of the two housings (1), and the mounting flanges (8) are connected to external pipes.

2. The flame arrester that is easy to clean and replace according to claim 1, characterized in that: The mounting assembly includes multiple connecting plates (9), which are fixedly mounted on the surface of the filter plate (3). The surface of each connecting plate (9) has threaded slots (10), and the paths of the threaded slots (10) of the corresponding connecting plates (9) are matched. Bolts (11) are installed inside the threaded slots (10), and one end of each bolt (11) extends to one side of the two connecting plates (9) and is fitted with a fixing nut (12).

3. A flame arrester that is easy to clean and replace according to claim 2, characterized in that: Multiple positioning rods (13) are installed on one side of the connecting plate (9), and multiple positioning grooves (14) are opened on the other side of the connecting plate (9). The positioning rods (13) are movably inserted into the interior of the positioning grooves (14). A first silicone rubber (15) is provided between the two filter plates. The positioning rods (13) movably pass through the first silicone rubber (15). A second silicone rubber (16) is installed at the end of the filter plate corresponding to the end that is prone to fire. The side of the second silicone rubber (16) is flush with the side of the filter plate. The surface of the second silicone rubber (16) abuts against the side of one of the protective edges (2). The connecting plate (9) near the other protective edge (2) abuts against the surface of the protective edge (2). Multiple locking grooves (17) are opened on the surface of the protective edge (2) at this position. The positioning rods (13) are movably installed inside the locking grooves (17).

4. The flame arrester that is easy to clean and replace according to claim 1, characterized in that: A first threaded groove (18) is provided between the two filter plates (3), and a second threaded groove (19) is provided on the surface of one end of the connecting pipe (6). The connecting pipe (6) is connected to the inside of the first threaded groove (18) through the second threaded groove (19). The diameter of the second threaded groove (19) is larger than the diameter of the second through groove (5).

5. A flame arrester that is easy to clean and replace according to claim 1, characterized in that: A switch valve (20) is also installed at the end of the connecting pipe (6), and a one-way valve (7) is installed in the middle of the connecting pipe (6). The switch valve (20) is closer to the end of the connecting pipe (6).

6. A flame arrester that is easy to clean and replace according to claim 1, characterized in that: The filter holes at corresponding positions of adjacent filter plates are connected internally, and their tilting directions are completely opposite.

7. A flame arrester that is easy to clean and replace according to claim 1, characterized in that: One of the housings (1) has multiple electromagnetic blocks (21) embedded in its sidewall. The multiple electromagnetic blocks (21) are equidistantly arranged at the edge of the housing (1). The power of the electromagnetic blocks (21) passes through the housing (1) and extends to the outside of the housing (1). The other housing (1) has a magnet inside.

8. A flame arrester that is easy to clean and replace according to claim 7, characterized in that: A pressure sensor (22) is embedded in the side surface of one of the housings (1).

9. A flame arrester that is easy to clean and replace according to claim 7, characterized in that: One of the housings (1) has multiple mounting rods (23) fixedly installed on its side, and the other housing (1) has multiple mounting slots (24) opened on its side. The mounting rods (23) are movably installed inside the mounting slots (24). A circular transverse groove (25) is provided between the two housings (1), and the connecting pipe (6) movably passes through the transverse groove (25).

10. A flame arrester that is easy to clean and replace according to claim 3, characterized in that: The connecting plate (9), the first silicone rubber (15), and the second silicone rubber (16) are all configured in a fan shape.

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