A high flow compressed air foam mixing device

Abstract

This invention discloses a high-flow-rate compressed air foam mixing device, comprising a mixer body and a mixer sealing component. The mixer body includes a first pipe, a second pipe, and a third pipe. A first sealing plate is provided at the right end of the first pipe, and a second sealing plate is provided at the left end of the second pipe. A side plate is provided inside the connection between the first and second pipes, and a through hole is provided at the center of the side plate. An inlet connector is inserted into the second sealing plate. A support rod is provided between the side plate and the first sealing plate. Nozzle A and nozzle B are respectively provided on the outer wall of the first sealing plate through outlet connector A and outlet connector B. The mixer sealing component includes a mixing pipe, a mounting base plate, and a second flange. The mounting base plate is provided with mounting holes. In this device, nozzles A and B are evenly distributed circumferentially and arranged alternately, allowing the liquid or gas sprayed from each other to mix thoroughly. The two paths are arranged laterally parallel, with minimal mutual interference, no flow interception, and no pulsation at the outlet, resulting in good mixing effect.

Description

Technical Field

[0001] This invention relates to the field of mixing device technology, specifically a high-flow-rate compressed air foam mixing device. Background Technology

[0002] Compressed air foam devices are advanced fire extinguishing systems. Their working principle involves mixing compressed air and foam liquid to generate foam, which is then released onto the fire source or burning material via a spray device to extinguish the fire. Depending on the specific application scenario and requirements, this equipment has different configurations and types. For example, a fixed compressed air foam fire extinguishing system is a new type of foam fire extinguishing system based on positive pressure foam generation. This type of fire extinguishing system is mainly used for fire prevention and control needs in typical locations such as ultra-high voltage power transmission and transformation stations, petrochemical storage tanks, traffic tunnels, garages, and aircraft hangars.

[0003] Currently, compressed air foam extinguishing devices, both domestically and internationally, are mainly used in fire trucks, foam guns, and other extinguishing equipment. Their flow rates are relatively small, primarily for extinguishing fires of moderate scale. Their gas-liquid mixing devices are relatively simple, such as wire mesh or perforated plates. These fluid deflectors create significant fluid resistance, affecting the spray distance of the compressed gas foam. Furthermore, when the liquid flow rate increases, the existing gas-liquid mixing devices, with their simple structures, are insufficient to ensure thorough gas-liquid mixing, thus affecting the foam quality and consequently the extinguishing effect of the device. Therefore, we have designed a high-flow-rate compressed air foam mixing device to address these technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a high-flow-rate compressed air foam mixing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-flow-rate compressed air foam mixing device includes a mixer body and a mixer sealing component, which are connected by multiple bolts. The mixer body includes a first pipe, a second pipe, and a third pipe. The first and second pipes are integrally formed. The right end of the first pipe has a first sealing plate, and the left end of the second pipe has a second sealing plate. A side plate is provided inside the connection between the first and second pipes, with a through hole at the center of the side plate. The left side of the side plate is a first chamber, and the right side is a second chamber. The right end of the third pipe extends into the first chamber and connects to the through hole. The left end of the third pipe has a first flange. Two inlet connectors are fixedly inserted into the second sealing plate. The side plate and the first sealing plate... Four support rods are fixed between the plates. Multiple outlet connectors A are fixed on the outer wall of the first sealing plate. Each outlet connector A has a nozzle A. Multiple outlet connectors B are also fixed on the outer wall of the first sealing plate. Each outlet connector B has a nozzle B. The nozzle B communicates with the interior of the second chamber through the outlet connectors B. The mixer sealing component includes a mixing pipe, a mounting base plate, and a second flange. The left end of the mixing pipe is provided with a mounting base plate. The mounting base plate is provided with multiple mounting holes corresponding to bolts evenly in the circumferential direction. The number of mounting holes is eight. The inner wall of the first sealing plate is provided with eight mounting inner seats evenly in the circumferential direction. Each mounting inner seat is provided with an internal thread that mates with the bolt. The right end of the internal thread extends outward through the first sealing plate.

[0007] As a preferred embodiment of the present invention: two inlet connectors are symmetrically distributed on the front and rear sides of the third pipe, four support rods are evenly distributed in the circumferential direction around the through hole, the mixing pipe is arranged through the left and right sides, and the inside of the mixing pipe is a mixing chamber.

[0008] As a further preferred embodiment of the present invention: both the first flange and the second flange are raised-panel flat-welded flanges, and a sealing gasket is provided between the mounting base plate and the first sealing plate.

[0009] As a further preferred embodiment of the present invention: the third pipe is arranged to run through the left and right sides, and the third pipe is connected to the interior of the second chamber through a through hole.

[0010] As a further preferred embodiment of the present invention: the inlet connector is welded to the second sealing plate, the inlet connector is connected to the interior of the first chamber, and the inlet connector is an external threaded tube connector.

[0011] As a further preferred embodiment of the present invention: the support rod is hollow inside and is arranged through the left and right sides, and the inside of the support rod is connected to the inside of the first cavity.

[0012] As a further preferred embodiment of the present invention: the position of the outlet connector A corresponds one-to-one with the position of the support rod, and the nozzle A is connected to the interior of the corresponding support rod through the outlet connector A.

[0013] As a further preferred embodiment of the present invention, multiple output connectors B and multiple output connectors A are alternately staggered.

[0014] As a further preferred embodiment of the present invention: both the outlet connector A and the outlet connector B are internal thread connectors.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, multiple outlet connectors B and multiple outlet connectors A are alternately staggered, while there are four support rods. Correspondingly, there are four outlet connectors A, i.e., four nozzles A, evenly distributed circumferentially on the right side of the first sealing plate. Therefore, there are also four nozzles B, evenly distributed circumferentially on the right side of the first sealing plate. Simultaneously, the alternating arrangement of nozzles A and B ensures thorough mixing of the liquid or gas ejected from each other, resulting in a good mixing effect. In this device, nozzle A corresponds to the first path, and nozzle B corresponds to the second path. The two paths are arranged horizontally parallel, minimizing mutual interference and preventing flow interception or pulsation at the outlet, further improving the mixing effect. Specifically, this device can be adapted to both high-flow-rate and low-flow-rate liquid-liquid mixing by changing the dimensions of the two paths and the flow coefficients of nozzles A and B. That is, the liquids in the two paths can be thoroughly mixed even with a large flow difference, and can also be thoroughly mixed even with a large pressure difference. This device is not only suitable for liquid-liquid mixing but also for gas-liquid mixing, and the connection method is not limited to flange or threaded connections, making it highly adaptable. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure in the AA direction;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure in the middle BB direction;

[0019] Figure 4 This is a perspective view of the mixer body in this invention;

[0020] Figure 5 This is a schematic diagram of the structure of the mixer sealing component in this invention;

[0021] Figure 6 for Figure 5 Schematic diagram of the structure in the CC direction;

[0022] Figure 7 This is a schematic diagram of the direction of the first path in this invention;

[0023] Figure 8 This is a schematic diagram of the direction of the second path in this invention.

[0024] Wherein: 1-Mixer body, 2-Mixer plug, 3-Sealing gasket, 4-Bolt, 5-Nozzle A, 6-Nozzle B, 7-Second pipe, 8-First pipe, 9-Third pipe, 10-First flange, 11-Inlet connector, 12-Internal thread, 13-First chamber, 14-Second chamber, 15-Side plate, 16-First sealing plate, 17-Support rod, 18-Mixing chamber, 19-Second sealing plate, 20-Mounting base plate, 21-Mounting inner seat, 22-Mounting hole, 23-Mixing pipe, 24-Outlet connector B, 25-Outlet connector A, 26-Second flange. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Please see Figure 1-8In this embodiment of the invention, a high-flow-rate compressed air foam mixing device includes a mixer body 1 and a mixer sealing component 2. The mixer body 1 and the mixer sealing component 2 are connected by multiple bolts 4. The mixer body 1 includes a first pipe 8, a second pipe 7, and a third pipe 9. The first pipe 8 and the second pipe 7 are integrally formed. The right end of the first pipe 8 is provided with a first sealing plate 16, and the left end of the second pipe 7 is provided with a second sealing plate 19. A side plate 15 is provided inside the connection between the first pipe 8 and the second pipe 7. A through hole is provided at the center of the side plate 15. The left side of the side plate 15 is a first chamber 13, and the right side is a second chamber 14. The right end of the third pipe 9 extends into the first chamber 13. The third pipe 9 is connected to the through hole. The left end of the third pipe 9 is provided with a first flange 10. Two inlet connectors 11 are fixedly inserted on the second sealing plate 19. The two inlet connectors 11 are symmetrically distributed on the front and rear sides of the third pipe 9. Four support rods 17 are fixed between the side plate 15 and the first sealing plate 16. The four support rods 17 are evenly distributed in the circumferential direction around the through hole. Multiple outlet connectors A25 are fixedly provided on the outer wall of the first sealing plate 16. The outlet connectors A25 are provided with nozzles A5. Multiple outlet connectors B24 are also provided on the outer wall of the first sealing plate 16. The outlet connectors B24 are provided with nozzles B6. The nozzles B6 communicate with the interior of the second chamber 14 through the outlet connectors B24.

[0029] The mixer sealing component 2 includes a mixing pipe 23, a mounting base plate 20, and a second flange 26. The mixing pipe 23 is arranged through the left and right sides, and the inside of the mixing pipe 23 is a mixing chamber 18. The mounting base plate 20 is provided on the outer side of the left end of the mixing pipe 23. The mounting base plate 20 is evenly provided with a plurality of mounting holes 22 corresponding to bolts 4 in the circumferential direction. There are eight mounting holes 22. The inner side wall of the first sealing plate 16 is evenly provided with eight mounting inner seats 21 in the circumferential direction. The mounting inner seats 21 are provided with internal threads 12 that cooperate with bolts 4. The right end of the internal thread 12 extends outward and penetrates the first sealing plate 16. In use, the internal thread 12 corresponds one-to-one with the mounting hole 22, and then the corresponding bolts 4 are inserted to complete the connection and installation of the mixer body 1 and the mixer sealing component 2. The right half of the mixing pipe 23 is tapered to the right, and a second flange 26 is provided on the outer side of the right port.

[0030] Both the first flange 10 and the second flange 26 are raised-panel flat-welded flanges.

[0031] The third pipe 9 is arranged to run through the left and right sides, and the third pipe 9 is connected to the interior of the second chamber 14 through a through hole.

[0032] The inlet connector 11 is welded to the second sealing plate 19. The inlet connector 11 is connected to the inside of the first chamber 13. The inlet connector 11 is an external threaded pipe connector. The outlet connectors A25 and B24 are both internal threaded connectors.

[0033] The support rod 17 is hollow inside and is arranged through the left and right sides, and the inside of the support rod 17 is connected to the inside of the first chamber 13.

[0034] The position of the outlet connector A25 corresponds one-to-one with the position of the support rod 17, and the nozzle A5 is connected to the interior of the corresponding support rod 17 through the outlet connector A25.

[0035] Multiple outlet connectors B24 and multiple outlet connectors A25 are alternately staggered; the device has four support rods 17, corresponding to four outlet connectors A25, i.e., four nozzles A5, which are evenly distributed circumferentially on the right side of the first sealing plate 16. Therefore, there are also four nozzles B6, evenly distributed circumferentially on the right side of the first sealing plate 16. Simultaneously, the alternating arrangement of nozzles A5 and B6 ensures thorough mixing of the liquid or gas ejected from them, resulting in good mixing. In this device, nozzle A5 corresponds to the first path, and nozzle B6 corresponds to the second path, such as... Figure 7 and Figure 8 As shown, the two paths are arranged horizontally and parallel to each other, minimizing mutual interference and preventing flow obstruction or pulsation at the outlet, thus further improving the mixing effect. In particular, this device can be adapted to both high-flow-rate and low-flow-rate liquid-liquid mixing by changing the dimensions of the two paths and the flow coefficients of nozzles A5 and B6. This means that the liquids in the two paths can be fully mixed even with a large flow difference, and can also be fully mixed even with a large pressure difference. This device is not only suitable for liquid-liquid mixing but also for gas-liquid mixing, and the connection method is not limited to flange or threaded connections, making it highly versatile.

[0036] A sealing gasket 3 is provided between the mounting base plate 20 and the first sealing plate 16 to improve the sealing of the installation connection, prevent liquid or gas leakage, avoid affecting the mixing effect, and avoid wasting resources.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-flow-rate compressed air foam mixing device, comprising a mixer body (1) and a mixer sealing component (2); characterized in that: The mixer body (1) and the mixer sealing component (2) are connected by multiple bolts (4) threaded together. The mixer body (1) includes a first pipe (8), a second pipe (7), and a third pipe (9). The first pipe (8) and the second pipe (7) are integrally formed. The right end of the first pipe (8) is provided with a first sealing plate (16), and the left end of the second pipe (7) is provided with a second sealing plate (19). A side plate (15) is provided inside the connection between the first pipe (8) and the second pipe (7). A through hole is provided in the center of the side plate (15). The left side of the side plate (15) is the first chamber (13), and the right side is the second chamber (14). The right end of the third pipe (9) extends into the first chamber (13) and connects to the through hole. The left end of the third pipe (9) is provided with a first flange (10). Two inlet connectors (11) are fixedly inserted on the second sealing plate (19). Four support rods (17) are fixed between the side plate (15) and the first sealing plate (16). Multiple outlet connectors A (25) are fixedly provided on the outer wall of the first sealing plate (16). The outlet connectors A (25) are provided with nozzles A (5). Multiple outlet connectors B (24) are also provided on the outer wall of the first sealing plate (16). The outlet connectors B (24) are provided with nozzles B (6). The nozzle B (6) is connected to the interior of the second chamber (14) through the outlet connector B (24). The mixer sealing component (2) includes a mixing pipe (23), a mounting base plate (20), and a second flange (26). The left end of the mixing pipe (23) is provided with a mounting base plate (20). The mounting base plate (20) is provided with a plurality of mounting holes (22) corresponding to the bolts (4) evenly in the circumferential direction. The number of mounting holes (22) is eight. The inner sidewall of the first sealing plate (16) is provided with eight mounting inner seats (21) evenly in the circumferential direction. The mounting inner seats (21) are provided with internal threads (12) that cooperate with the bolts (4). The inner thread (12) extends outward through the first sealing plate (16) at the right end. Two inlet connectors (11) are symmetrically distributed on the front and back sides of the third pipe (9). Four support rods (17) are evenly distributed in the circumferential direction around the through hole. The mixing pipe (23) is connected in the left and right directions, and the inside of the mixing pipe (23) is a mixing chamber (18). The position of the outlet connector A (25) corresponds one-to-one with the position of the support rod (17). The nozzle A (5) is connected to the inside of the corresponding support rod (17) through the outlet connector A (25). Multiple outlet connectors B (24) and multiple outlet connectors A (25) are alternately staggered. The third pipe (9) is arranged to run through the left and right sides, and the third pipe (9) is connected to the interior of the second chamber (14) through a through hole; The support rod (17) is hollow inside and is arranged through the left and right sides. The inside of the support rod (17) is connected to the inside of the first chamber (13).

2. The high-flow-rate compressed air foam mixing device according to claim 1, characterized in that: The first flange (10) and the second flange (26) are both raised panel type flat welding flanges, and a sealing gasket (3) is provided between the mounting base plate (20) and the first sealing plate (16).

3. The high-flow-rate compressed air foam mixing device according to claim 1, characterized in that: The inlet connector (11) is welded to the second sealing plate (19), and the inlet connector (11) is connected to the interior of the first chamber (13). The inlet connector (11) is an external threaded tube connector.

4. The high-flow-rate compressed air foam mixing device according to claim 1, characterized in that: Both the outlet connector A (25) and the outlet connector B (24) are internal thread connectors.

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