Three-in-one fire monitor based on compressed air foam

Abstract

The three-in-one fire monitor based on the compressed air foam comprises a cart, a storage tank and a spray head assembly, the storage tank and the spray head assembly are arranged on the cart, and the input end of the spray head assembly communicates with the storage tank; a first pipeline, a second pipeline and a fifth pipeline are arranged on the storage tank, the spray head assembly comprises a bidirectional rotating pipeline structure, a spray head structure and a spraying surface adjusting structure, and the spraying surface adjusting structure comprises a pipe barrel, a vertical plate, a pin shaft, an adjusting plate, a fixing rod, a hinge rod and an air cylinder. The three-in-one fire monitor has the advantages that water and a foaming agent stored in the storage tank can be mixed with compressed air, a foam aqueous solution is fully refined and foamed, compressed air foam is formed, and then the three-in-one effect of the fire monitor is achieved; and meanwhile, the opening and closing degree of the two adjusting plates is controlled, the sprayed columnar foam can be changed into a flat shape, the spraying position is changed into a linear shape from a point shape, and the fire extinguishing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fire monitors, and in particular to a three-in-one fire monitor based on compressed air foam. Background Art

[0002] Fire safety is related to all aspects of production and life, including the prevention of internal disasters and the elimination of external disasters. In the daily life and production process, it is necessary to equip reasonable fire-fighting mechanisms and equipment, so as to prevent the occurrence of disasters from the source or block the continuous development of disasters. Take fire as an example. When the disaster is about to reach or has reached an uncontrollable level, firefighters are needed to go out to extinguish the fire. Fire cannons, as a large-flow fire-fighting equipment, are often configured on fire trucks and fire-fighting robots, which can achieve better fire-fighting effects. For example, the Chinese invention patent with publication number CN112535827A discloses a simple mobile fire cannon for fire fighting.

[0003] CAFS is a compressed air foam, which is mainly composed of a pre-mix of foam, compressed air and water. The foam water solution is fully refined and foamed by compressed air, which greatly enhances the ability to penetrate into the interior of the burning material and adhere to the surface of the burning material. A small drop of water becomes many bubbles, and the surface area of ​​the water is expanded seven times, which greatly increases the adhesion and penetration of the burning material, and improves the coverage and cooling effect. However, in actual application, the existing fire monitor can only deliver one of the media, and it is impossible to switch the media in real time based on the fire scene conditions. Therefore, it is urgent to provide a three-in-one fire monitor that can deliver water, foam and compressed air foam. Summary of the invention

[0004] The technical problem to be solved by the present invention is a three-in-one fire monitor capable of delivering water, foam and compressed air foam.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A three-in-one fire monitor based on compressed air foam, comprising a cart, a storage tank and a nozzle assembly, wherein the cart is provided with the storage tank and the nozzle assembly, and the input end of the nozzle assembly is connected to the storage tank;

[0007] The storage tank is provided with a first pipeline, a second pipeline and a fifth pipeline, the first pipeline is used for externally connecting gas, the second pipeline is connected to a third pipeline and a fourth pipeline respectively through a three-way connector, the third pipeline and the fourth pipeline are respectively externally connected to a water source and a foaming agent, and the fifth pipeline is connected to an input end of the spray head assembly;

[0008] The nozzle assembly comprises a bidirectional rotating pipeline structure, a nozzle structure, and a spraying surface adjustment structure. The input end of the bidirectional rotating pipeline structure is connected to the fifth pipeline, and the output end is connected to the nozzle structure. The output end of the nozzle structure is provided with a spraying surface adjustment structure.

[0009] The spraying surface adjustment structure includes a tube, a vertical plate, a pin shaft, an adjustment plate, a fixed rod, a hinged rod, and a cylinder. The output end of the nozzle structure is sleeved with a tube through the vertical plate. The ends of the tube are rotatably connected to symmetrically arranged adjustment plates through pin shafts. A fixed rod is fixed to each adjustment plate. Both ends of the fixed rod are rotatably connected to hinged rods. The two hinged rods are rotatably connected to the output end of the cylinder installed on the side wall of the tube.

[0010] The storage tank is connected with a first pipe for external gas, a third pipe and a fourth pipe for external water source and foaming agent respectively, so that not only water and foaming agent can be stored in the storage tank, but also compressed air can be input through the first pipe, so that the water and foaming agent stored in the storage tank can be mixed with compressed air, and the foam water solution can be fully refined and foamed to form compressed air foam, thereby realizing the three-in-one effect of the fire monitor. At the same time, by driving the cylinder, the hinged rod drives the fixed rod to rotate around the pin shaft as the center, and drives the adjustment plate to rotate around the pin shaft as the center, thereby controlling the opening and closing degree of the two adjustment plates, and the ejected columnar foam can be changed into a flat shape, and the spraying point can be changed into a line shape, thereby improving the fire extinguishing efficiency.

[0011] Preferably, the bidirectional rotating pipe structure includes a sixth pipe, a seventh pipe and a rotating drive mechanism, the sixth pipe is U-shaped, and its two ends are respectively connected to the fifth pipe and the seventh pipe, the output end of the seventh pipe is connected to the nozzle structure, and a rotating drive mechanism is also provided at the connection between the fifth pipe and the sixth pipe and the sixth pipe and the seventh pipe, so that the sixth pipe can rotate horizontally on the fifth pipe, and the seventh pipe can rotate vertically on the sixth pipe.

[0012] Preferably, the rotary drive mechanism includes a worm barrel, a handwheel and a first servo motor. The inner wall of the worm barrel is rotatably connected to a worm. Each group of worms is respectively engaged with a worm wheel installed on the sixth pipe and the seventh pipe. A handwheel is provided at the end of the worm. The worm is connected to the first servo motor through a transmission mechanism.

[0013] Preferably, the nozzle structure includes an eighth pipe, a mounting seat, and a DC atomizing nozzle. The eighth pipe is connected to the output end of the bidirectional rotating pipe structure. The mounting seat is arranged at the end of the eighth pipe, and the mounting seat is provided with a DC atomizing nozzle connected to the eighth pipe.

[0014] Preferably, a column is installed on the cart, a connecting seat is installed on the side wall of the column, a one-way slot is provided on one side of the connecting seat, the eighth pipe is connected to a connecting piece through a pipe clamp, and sockets are provided on the connecting piece and the connecting seat, and a locking pin is inserted in the socket.

[0015] Preferably, a serrated edge is provided at one end of the adjustment plate away from the cylinder.

[0016] Preferably, the first pipeline and the second pipeline are respectively provided with a first valve and a second valve, the third pipeline and the fourth pipeline are both provided with a third valve, the fifth pipeline is provided with a pump body, and the input end and the output end of the pump body are respectively provided with a fourth valve and a fifth valve.

[0017] Preferably, an inspection port is provided on the top of the storage tank, and a cover body is provided on the inspection port, the cover body includes a connecting rod and a screw rod hinged on the edge of the inspection port, a cover plate is hinged on the middle section of the connecting rod, the free end of the connecting rod is connected to a C-shaped head, the screw rod can slide into the C-shaped head, and the end of the screw rod is threadedly connected to a pressure cap.

[0018] Preferably, a safety valve and a pressure gauge are also provided on the top of the storage tank. The storage tank is connected to the fifth pipeline through a ninth pipeline, and a sixth valve body is provided on the ninth pipeline.

[0019] Preferably, the storage tank is connected to the fifth pipeline via a ninth pipeline, and a sixth valve body is provided on the ninth pipeline.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The storage tank is connected with a first pipe for external gas, a third pipe and a fourth pipe for external water source and foaming agent respectively, so that not only water and foaming agent can be stored in the storage tank, but also external compressed air is input through the first pipe, so that the water and foaming agent stored in the storage tank can be mixed with compressed air, and the foam water solution is fully refined and foamed to form compressed air foam, thereby realizing the three-in-one function of the fire monitor. At the same time, by driving the cylinder, the hinged rod drives the fixed rod to rotate around the pin shaft as the center, and drives the adjustment plate to rotate around the pin shaft as the center, thereby controlling the opening and closing degree of the two adjustment plates, and the ejected columnar foam can be changed into a flat shape, and the spraying point can be changed into a line shape, thereby improving the fire extinguishing efficiency.

[0022] 2. The sixth pipe is driven to rotate horizontally on the fifth pipe and the seventh pipe is driven to rotate vertically on the sixth pipe through the rotary drive mechanism, thereby realizing the rotation of the nozzle structure in the horizontal and vertical planes, realizing manual or automatic adjustment, being flexible and easy to operate, and expanding the spraying area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1The structure of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 The structure of the embodiment of the present invention is shown in FIG. Figure 3 ;

[0026] Figure 4 The structure of the embodiment of the present invention is shown in FIG. Figure 4 ;

[0027] Figure 5 It is a structural schematic diagram of a nozzle assembly according to an embodiment of the present invention;

[0028] Figure 6 Another schematic diagram of the structure of the nozzle assembly according to an embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the structure of the nozzle according to the embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with the accompanying drawings of the specification.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically limited.

[0033] See also Figures 1 to 7 This embodiment discloses a three-in-one fire cannon based on compressed air foam, including a cart 1, a storage tank 2, a nozzle assembly and a control cabinet 5. The storage tank 2, the nozzle assembly and the control cabinet 5 are arranged on the cart 1, and the input end of the nozzle assembly is connected to the storage tank 2.

[0034] The storage tank 2 is provided with a stirring mechanism, the bottom of the storage tank 2 is connected with the first pipe 3 and the fifth pipe 17 respectively, the fifth pipe 17 is installed with a pump body 21, the input end and the output end of the pump body 21 are respectively provided with a fourth valve body 22 and a fifth valve body 23, the first pipe 3 is provided with a first valve body 12, the top of the storage tank 2 is connected with the third pipe 14 and the fourth pipe 15 respectively through the second pipe 4 and the three-way connector 13, the third pipe 14 and the fourth pipe 15 are both provided with a third valve body 18, the second pipe 4 is provided with a second valve body 16, and the output end of the fifth pipe 17 is connected with the input end of the nozzle assembly. The first pipe 3 is used for external gas, and the third pipe 14 and the fourth pipe 15 are respectively externally connected with a water source and a foaming agent.

[0035] The nozzle assembly includes a bidirectional rotating pipeline structure, a nozzle structure, and a spraying surface adjustment structure. The input end of the bidirectional rotating pipeline structure is connected to the fifth pipeline 17, and the output end is connected to the nozzle structure. The output end of the nozzle structure is provided with a spraying surface adjustment structure.

[0036] See also Figure 2 , Figure 5 and Figure 6 The bidirectional rotating pipeline structure includes a sixth pipeline 19, a seventh pipeline 20 and a rotating drive mechanism 24. The sixth pipeline 19 is U-shaped, and its two ends are respectively connected to the fifth pipeline 17 and the seventh pipeline 20. The output end of the seventh pipeline 20 is connected to the nozzle structure. The fifth pipeline 17 and the sixth pipeline 19 and the sixth pipeline 19 and the seventh pipeline 20 are also provided with a rotating drive mechanism 24 at the connection point, so that the sixth pipeline 19 can rotate horizontally on the fifth pipeline 17, and the seventh pipeline 20 can rotate vertically on the sixth pipeline 19. Specifically, the rotating drive mechanism 24 drives the sixth pipeline 19 to rotate horizontally on the fifth pipeline 17, and the seventh pipeline 20 to rotate vertically on the sixth pipeline 19, thereby realizing the rotation of the nozzle structure in the horizontal plane and the vertical plane, realizing manual or automatic adjustment, flexible and easy to operate, and expanding the spraying area.

[0037] See also Figure 2 The rotary drive mechanism 24 includes a worm barrel 241, a handwheel 252 and a first servo motor 253. The inner wall of the worm barrel 241 is rotatably connected with a worm. Each group of worms is respectively engaged with worm wheels installed on the sixth pipe 19 and the seventh pipe 20. A handwheel 252 is provided at the end of the worm. The worm is connected to the first servo motor 253 through a transmission mechanism. Electric or manual control can be realized to cope with different scenarios.

[0038] See also Figure 7The nozzle structure includes an eighth pipeline 25, a mounting seat 37, a DC atomizing nozzle 38 and a second servo motor 39. The input end of the eighth pipeline 25 is connected to the output end of the seventh pipeline 20, and the output end is connected to the spraying surface adjustment structure. The mounting seat 37 is arranged at the output end of the eighth pipeline 25. The mounting seat 37 is provided with a DC atomizing nozzle 38 connected to the eighth pipeline 25. The second servo motor 39 drives the DC atomizing nozzle 38 through a worm gear mechanism. The DC atomizing nozzle 38 is controlled to rotate by the second servo motor 39 to realize the switching between DC injection and mist injection.

[0039] See also Figure 5 and Figure 6 The spraying surface adjustment structure includes a tube 29, a vertical plate 30, a cylinder 31, a hinged rod 32, a fixed rod 33, a pin 34, and an adjustment plate 35. The output end of the eighth pipeline 25 is sleeved with a tube 39 through the vertical plate 30. The end of the tube 39 is rotatably connected to a symmetrically arranged adjustment plate 35 through a pin 34. A fixed rod 33 is fixed to each adjustment plate 35. Both ends of the fixed rod 33 are rotatably connected to a hinged rod 32. The two hinged rods 32 are rotatably connected to the output end of the cylinder 31 installed on the side wall of the tube 29. Specifically, the driving cylinder 31 drives the fixed rod to rotate around the pin 34 through the hinged rod 32, thereby driving the adjustment plate 35 to rotate around the pin 34, thereby controlling the opening and closing degree of the two adjustment plates 35, and the ejected columnar foam can be changed into a flat shape, and the spraying point can be changed into a line shape, thereby improving the fire extinguishing efficiency.

[0040] Furthermore, a serrated edge 36 is provided at one end of the regulating plate 35 away from the cylinder 31, so that the edge of the sprayed foam becomes serrated, further expanding the spraying area.

[0041] For further information, see Figure 1 The trolley 1 is provided with a column 8, a connecting seat 9 is provided on the side wall of the column 8, a one-way slot 10 is provided on one side of the connecting seat 9, an eighth pipe 25 is connected with a connecting piece 27 through a pipe clamp 26, and a socket 28 is provided on the connecting piece 27 and the connecting seat 9, and a locking pin 11 is inserted into the socket 28.

[0042] During transportation, the eighth pipe 25 can be rotated and brought closer to the storage tank 2, and the connecting piece 27 and the connecting seat 9 can be fixed by the locking pin 11 to achieve the folding of the eighth pipe 25 and other components to avoid collision.

[0043] See also Figure 1The top of the storage tank 2 is provided with an inspection port, on which a cover 7 is provided, the cover 7 comprises a connecting rod 72 and a screw rod 73 hinged at the edge of the inspection port, a cover plate 71 is hinged at the middle section of the connecting rod 72, a C-shaped head 74 is connected to the free end of the connecting rod 72, the screw rod 73 can slide into the C-shaped head 74, and a pressure cap 75 is threadedly connected to the end of the screw rod 73 to achieve the installation of the cover 7. A safety valve 6 and a pressure gauge are also provided at the top of the storage tank 2.

[0044] In this embodiment, the storage tank 2 is connected to the fifth pipeline 17 through a ninth pipeline, and a sixth valve body is provided on the ninth pipeline. The foam circulates through the fifth pipeline 17 and the ninth pipeline to avoid foam condensation.

[0045] The working principle of this embodiment is as follows: the fourth valve body 22, the first valve body 12 and the sixth valve body are closed, water and foaming agent are respectively injected into the storage tank 2 in proportion through the third pipe 14 and the fourth pipe 15, and stirred and mixed through the stirring mechanism, and then the first valve body 12 is opened, and the storage tank 2 is pressurized through the first pipe 3 to form elastic foam, and then the first valve body 12 is closed, and the pump body 21 extracts elastic foam from the storage tank 2 and sprays it from the eighth pipe 25. During the spraying process, the sixth pipe 19 is driven by the rotary drive mechanism 24 to rotate horizontally on the fifth pipe 17, and the seventh pipe 20 is driven vertically on the sixth pipe 19, thereby realizing the nozzle structure. The structure rotates in the horizontal and vertical planes to achieve manual or automatic adjustment, which is flexible and easy to operate, and expands the spraying area. At the same time, the driving cylinder 31 drives the fixing rod to rotate around the pin shaft 34 through the hinge rod 32, thereby driving the adjusting plate 35 to rotate around the pin shaft 34, and then controlling the opening and closing degree of the two adjusting plates 35. The ejected columnar foam can be changed into a flat shape, and the spraying point can be changed from a point shape to a line shape, thereby improving the fire extinguishing efficiency. In addition, during transportation, the eighth pipe 25 can be rotated and brought closer to the storage tank 2, and the connecting piece 27 and the connecting seat 9 can be fixed by the locking pin 11 to achieve the folding of the eighth pipe 25 and other components to avoid collision.

[0046] In summary, in the present invention, the storage tank 2 is connected with a first pipe 3 for external gas, a third pipe 14 and a fourth pipe 15 for external water source and foaming agent respectively, so that not only water and foaming agent can be stored in the storage tank 2, but also external compressed air is input through the first pipe 3, so that the water and foaming agent stored in the storage tank 2 can be mixed with compressed air, and the foam water solution is fully refined and foamed to form compressed air foam, so that the fire cannon can achieve a three-in-one effect. At the same time, by driving the cylinder 31, the hinged rod 32 drives the fixed rod to rotate around the pin shaft 34 as the center, and drives the adjustment plate 35 to rotate around the pin shaft 34 as the center, so as to control the opening and closing degree of the two adjustment plates 35, so that the ejected columnar foam can be changed into a flat shape, and the spraying point can be changed from a point shape to a line shape, thereby improving the fire extinguishing efficiency.

[0047] It is obvious 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 present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0048] The above-described embodiments merely represent implementation methods of the invention. The protection scope of the present invention is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements may be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A three-in-one fire monitor based on compressed air foam, characterized in that: It includes a cart, a storage tank and a nozzle assembly, wherein the cart is provided with the storage tank and the nozzle assembly, and the input end of the nozzle assembly is connected with the storage tank; The storage tank is provided with a first pipeline, a second pipeline and a fifth pipeline, the first pipeline is used for externally connecting gas, the second pipeline is connected to a third pipeline and a fourth pipeline respectively through a three-way connector, the third pipeline and the fourth pipeline are respectively externally connected to a water source and a foaming agent, and the fifth pipeline is connected to an input end of the spray head assembly; The nozzle assembly comprises a bidirectional rotating pipeline structure, a nozzle structure, and a spraying surface adjustment structure. The input end of the bidirectional rotating pipeline structure is connected to the fifth pipeline, and the output end is connected to the nozzle structure. The output end of the nozzle structure is provided with a spraying surface adjustment structure. The spraying surface adjustment structure includes a tube, a vertical plate, a pin shaft, an adjustment plate, a fixed rod, a hinged rod, and a cylinder. The output end of the nozzle structure is sleeved with a tube through the vertical plate. The ends of the tube are rotatably connected to symmetrically arranged adjustment plates through pin shafts. A fixed rod is fixed to each adjustment plate. Both ends of the fixed rod are rotatably connected to hinged rods. The two hinged rods are rotatably connected to the output end of the cylinder installed on the side wall of the tube.

2. A three-in-one fire monitor based on compressed air foam according to claim 1, characterized in that: The bidirectional rotating pipeline structure includes a sixth pipeline, a seventh pipeline and a rotating drive mechanism. The sixth pipeline is U-shaped, and its two ends are respectively connected to the fifth pipeline and the seventh pipeline. The output end of the seventh pipeline is connected to the nozzle structure. The fifth pipeline and the sixth pipeline and the sixth pipeline and the seventh pipeline are also connected at the connection. A rotating drive mechanism is provided, so that the sixth pipeline can rotate horizontally on the fifth pipeline, and the seventh pipeline can rotate vertically on the sixth pipeline.

3. A three-in-one fire monitor based on compressed air foam according to claim 2, characterized in that: The rotary drive mechanism includes a worm barrel, a handwheel and a first servo motor. The inner wall of the worm barrel is rotatably connected to a worm. Each group of worms is respectively engaged with worm wheels installed on the sixth pipe and the seventh pipe. A handwheel is provided at the end of the worm. The worm is connected to the first servo motor through a transmission mechanism.

4. A three-in-one fire monitor based on compressed air foam according to claim 1, characterized in that: The nozzle structure includes an eighth pipeline, a mounting seat, and a DC atomizing nozzle. The eighth pipeline is connected to the output end of the bidirectional rotating pipeline structure. The mounting seat is arranged at the end of the eighth pipeline. The mounting seat is provided with a DC atomizing nozzle connected to the eighth pipeline.

5. A three-in-one fire monitor based on compressed air foam according to claim 4, characterized in that: The cart is provided with a column, a connecting seat is provided on the side wall of the column, a one-way slot is provided on one side of the connecting seat, the eighth pipe is connected with a connecting piece through a pipe clamp, and sockets are provided on the connecting piece and the connecting seat, and a locking pin is inserted in the socket.

6. A three-in-one fire monitor based on compressed air foam according to claim 1, characterized in that: The end of the adjustment plate away from the cylinder is provided with a serrated edge.

7. A three-in-one fire monitor based on compressed air foam according to claim 1, characterized in that: The first pipeline and the second pipeline are respectively provided with a first valve and a second valve, the third pipeline and the fourth pipeline are both provided with a third valve, the fifth pipeline is provided with a pump body, and the input end and the output end of the pump body are respectively provided with a fourth valve and a fifth valve.

8. A three-in-one fire monitor based on compressed air foam according to claim 1, characterized in that: The storage tank is provided with an inspection port on the top, and a cover body is provided on the inspection port. The cover body includes a connecting rod and a screw rod hinged on the edge of the inspection port. The middle section of the connecting rod is hinged with a cover plate, the free end of the connecting rod is connected to a C-shaped head, the screw rod can slide into the C-shaped head, and the end of the screw rod is threadedly connected to a pressure cap.

9. A three-in-one fire monitor based on compressed air foam according to claim 1, characterized in that: The top of the storage tank is also provided with a safety valve and a pressure gauge. The storage tank is connected to the fifth pipeline through a ninth pipeline, and a sixth valve body is provided on the ninth pipeline.

10. A three-in-one fire monitor based on compressed air foam according to claim 1, characterized in that: The storage tank is connected to the fifth pipeline through a ninth pipeline, and a sixth valve body is arranged on the ninth pipeline.

Images