A low temperature resistant extendable lance nozzle

Abstract

This utility model discloses a low-temperature resistant extendable flamethrower nozzle, including a main pipe with a tee pipe connected to one end and a closed end. Two branch pipes are connected to the main pipe, each with a connecting pipe rotatably connected via a rotary sealing joint. A telescopic pipe is threaded onto the connecting pipe. The telescopic pipe includes an outer pipe, a corrugated pipe connected to one end of the outer pipe, a nozzle connected to the corrugated pipe, and an extension mechanism for extending the corrugated pipe. The telescopic pipe also includes a pulling mechanism for deflecting the nozzle. The extension mechanism extends the length of the corrugated pipe, thereby increasing the distance reached by the nozzle and improving the spray distance. The pulling mechanism deflects the nozzle, adjusting the spray angle and increasing the spray range.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically to a low-temperature resistant extendable flamethrower nozzle. Background Technology

[0002] Fire extinguishers are connected to a nozzle at the output end for spraying extinguishing agents onto the fire. Existing fire extinguisher nozzles are generally made of rubber or plastic, which has the following main problems: (1) Only one type of extinguishing agent can be sprayed at a time, and there is no need to control the operation of the nozzle according to the needs, making it difficult to select the appropriate extinguishing agent according to the fire source; (2) The angle of the nozzle is generally fixed and difficult to adjust. Even if adjustment is needed, it is done by setting a motor, electric telescopic rod or cylinder on the nozzle, which not only increases the size but also increases the cost. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a low-temperature resistant extendable flamethrower nozzle to solve the problems mentioned in the background art, such as the inability to select the appropriate nozzle to work according to the fire source and the difficulty in adjusting the nozzle angle.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A cryogenic extendable flamethrower nozzle includes a main pipe, one end of which is connected to a tee pipe and the other end is closed. Two branch pipes are connected to the main pipe, and each branch pipe is rotatably connected to a connecting pipe via a rotary sealing joint. A telescopic pipe is threaded onto the connecting pipe. The telescopic pipe includes an outer pipe, a corrugated pipe connected to one end of the outer pipe, a nozzle connected to the corrugated pipe, and an extension mechanism for pushing the corrugated pipe to extend. The telescopic pipe also includes a pulling mechanism for pulling the nozzle to deflect.

[0005] Preferably, the extension mechanism includes a slip ring slidably connected to the outer tube, a first connecting plate fixedly connected to the outer tube and near the end of the corrugated pipe, and a second connecting plate fixedly connected to the outer wall of the nozzle. A shaft is fixedly connected to the second connecting plate, a sleeve is fixedly connected to the slip ring, the sleeve is slidably connected to the first connecting plate, a U-shaped block is fixedly connected to the end of the sleeve away from the slip ring, and the shaft is rotatably connected to the U-shaped block through a rotary bearing.

[0006] The above technical solution pushes the slip ring, causing it to slide on the outer tube. When the slip ring slides, it drives the sleeve to slide on the first connecting plate, thereby pushing the U-shaped block through the sleeve. The U-shaped block then pushes the nozzle through the shaft and the second connecting plate. The nozzle pulls the bellows, thereby extending the bellows and increasing the spray distance.

[0007] Preferably, the pulling mechanism includes a steel rope disposed inside the sleeve, a bushing fixedly connected to the shaft, and a lever fixedly connected to the bushing. The lever has a round hole, and the bottom of the sleeve near the U-shaped block has a through hole. One end of the steel rope is connected to a spherical handle, and the other end passes through the through hole and is fixedly connected to the round hole on the lever.

[0008] With the above technical solution, when it is necessary to rotate the nozzle, the handle is pulled by hand, which moves the steel rope inside the sleeve. The steel rope then pulls the lever, which drives the bushing, which drives the shaft, which in turn drives the second connecting plate to rotate, thereby rotating the nozzle and ultimately adjusting the nozzle angle to increase the spray range.

[0009] Preferably, a ball valve is installed on the branch pipe.

[0010] The above technical solution allows for the control of the opening and closing of the corresponding branch pipes via ball valves.

[0011] Preferably, a handle is connected to the outer wall of the outer tube near the end of the rotary sealing joint.

[0012] The above technical solution allows users to easily hold the outer tube by means of a handle.

[0013] Preferably, the outer tube comprises, from the outside to the inside, an antifreeze and weather-resistant layer, a flexible insulation layer, and a corrosion-resistant flow guiding layer.

[0014] Through the above technical solutions, the antifreeze and weather-resistant layer adopts modified polyurethane with the addition of nano-silica to enhance the antifreeze properties; the flexible insulation layer is composed of closed-cell foamed silicone to reduce the conduction of external low temperature; the anti-corrosion and flow-guiding layer uses fluororubber composite material with an ice-repellent coating, such as polytetrafluoroethylene derivatives, sprayed on the surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The three-way pipe is connected to two sets of fire extinguishers respectively. The two sets of fire extinguishers are filled with different fire extinguishing substances. When a fire occurs, the user opens the corresponding fire extinguisher according to the fire source on site, thereby spraying the corresponding fire extinguishing substance and improving the fire extinguishing efficiency.

[0016] (2) The length of the bellows can be extended by the extension mechanism, thereby increasing the distance reached by the nozzle and improving the spraying distance. The spraying angle can be adjusted by pulling the nozzle to deflect it through the pulling mechanism, thereby improving the spraying range. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of a telescopic tube; Figure 3 for Figure 1 A magnified view of a portion of the image; Figure 4 A schematic diagram of the U-shaped block, the first connecting plate, the shaft, the bushing, and the lever; In the diagram: 1-Main pipe, 2-Tee pipe, 3-Branch pipe, 4-Rotary sealing joint, 5-Connecting pipe, 6-Telescopic pipe, 601-Outer pipe, 602-Bellwall pipe, 603-Nozzle, 604-Slip ring, 605-First connecting plate, 606-Second connecting plate, 607-Shaft, 608-Sleeve, 609-U-block, 610-Steel rope, 611-Shaft sleeve, 612-Pulley, 613-Through hole, 614-Handle, 615-Handle handle, 7-Ball valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1 Please see Figures 1-4 A low-temperature resistant extendable flamethrower nozzle includes a main pipe 1, one end of which is connected to a tee pipe 2, and the other end is closed. Two branch pipes 3 are connected to the main pipe 1, and each branch pipe 3 is rotatably connected to a connecting pipe 5 via a rotary sealing joint 4. Ball valves 7 are installed on the branch pipes 3 to control the opening and closing of the respective branch pipes. The tee pipe 2 is connected to two sets of fire extinguishers, each containing different extinguishing agents, and each fire extinguisher also has a valve at its outlet. This embodiment will not describe this in detail.

[0020] The connecting pipe 5 is threadedly connected to a telescopic pipe 6. The telescopic pipe 6 includes an outer pipe 601, a corrugated pipe 602 connected to one end of the outer pipe, a nozzle 603 connected to the corrugated pipe, and an extension mechanism for extending the corrugated pipe 602. A handle 615 is connected to the outer wall of the outer pipe 601 near the rotary sealing joint 4 for easy handling by the user. The telescopic pipe 6 also includes a pulling mechanism for deflecting the nozzle 603. The extension mechanism includes a slip ring 604 slidably connected to the outer pipe, a first connecting plate 605 fixedly connected to the outer pipe near the corrugated pipe, and a second connecting plate 606 fixedly connected to the outer wall of the nozzle. A shaft 607 is fixedly connected to the second connecting plate 606. A sleeve 608 is fixedly connected to the slip ring 604. The sleeve 608 is slidably connected to the first connecting plate 605. A U-shaped block 609 is fixedly connected to the end of the sleeve 608 away from the slip ring. The shaft 607 is rotatably connected to the U-shaped block 609 through a rotary bearing. Pushing the slip ring 604 causes it to slide on the outer tube 601. When the slip ring 604 slides, it drives the sleeve 608 to slide on the first connecting plate 605, thereby pushing the U-shaped block 609 through the sleeve 608. The U-shaped block 609 then pushes the nozzle 603 through the shaft 607 and the second connecting plate 609. The nozzle 603 pulls the bellows 602, thereby extending the bellows 602 and increasing the spray distance.

[0021] The pulling mechanism includes a steel rope 610 disposed inside the sleeve, a bushing 611 fixedly connected to the shaft, and a lever 612 fixedly connected to the bushing. The lever 612 has a round hole. The bottom of the sleeve 608 near the U-shaped block has a through hole 613. One end of the steel rope 610 is connected to a spherical handle 614, and the other end passes through the through hole 613 and is fixedly connected to the round hole on the lever 612. The diameter of the handle 614 is larger than the inner diameter of the sleeve 608, thus preventing the steel rope 610 from slipping out of the sleeve. When it is necessary to rotate the nozzle 603, the handle 614 is pulled by hand, causing the steel rope 610 to move within the sleeve 608. The steel rope 610 then pulls the lever 612, which in turn drives the bushing 611. The bushing 611 drives the shaft 607, which in turn drives the second connecting plate 609 to rotate, thereby rotating the nozzle 603. This ultimately achieves the adjustment of the nozzle angle and increases the spray range. After the nozzle angle is adjusted, the handle 615 is held by hand and rotated. Through the action of the rotating sealing joint 4, the outer tube 601 can also be rotated, thereby rotating the nozzle and further increasing the spray range.

[0022] The rotary sealing joint 4 described in this embodiment is used to maintain a seal and prevent leakage while transferring fluid (liquid or gas) between a rotating component and a stationary system. The rotary sealing joint 4 is prior art and can also be purchased on the market, and will not be described in detail in this embodiment.

[0023] Example 2 Based on Example 1, the outer tube 601 comprises, from the outside to the inside, an antifreeze and weather-resistant layer, a flexible insulation layer, and a corrosion-resistant flow-guiding layer. The antifreeze and weather-resistant layer is made of modified polyurethane with added nano-silica, extruded into the outer layer to enhance its antifreeze properties. The flexible insulation layer is composed of closed-cell foamed silicone, which is compounded through a molding process to reduce external low-temperature conduction. The corrosion-resistant flow-guiding layer uses fluororubber composite material, co-extruded, and coated with a 0.1mm ice-repellent coating, such as a polytetrafluoroethylene derivative. Through this design, the outer tube can operate stably in environments ranging from -50℃ to 50℃; its bending life is increased by 3 times; and no external heating device is required, reducing maintenance costs.

[0024] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cryogenically resistant, extendable flamethrower nozzle, characterized in that: It includes a main pipe (1), one end of which is connected to a tee pipe (2) and the other end is closed. Two branch pipes (3) are connected to the main pipe (1). Each branch pipe (3) is rotatably connected to a connecting pipe (5) through a rotary sealing joint (4). A telescopic pipe (6) is threaded onto the connecting pipe (5). The telescopic pipe (6) includes an outer pipe (601), a corrugated pipe (602) connected to one end of the outer pipe, a nozzle (603) connected to the corrugated pipe, and an extension mechanism for pushing the corrugated pipe (602) to extend. The telescopic pipe (6) also includes a pulling mechanism for pulling the nozzle (603) to deflect.

2. The cryogenically resistant extendable flamethrower nozzle according to claim 1, characterized in that: The extension mechanism includes a slip ring (604) slidably connected to the outer tube, a first connecting plate (605) fixedly connected to the outer tube and near the end of the bellows, and a second connecting plate (606) fixedly connected to the outer wall of the nozzle. A shaft (607) is fixedly connected to the second connecting plate (606). A sleeve (608) is fixedly connected to the slip ring (604). The sleeve (608) is slidably connected to the first connecting plate (605). A U-shaped block (609) is fixedly connected to the end of the sleeve (608) away from the slip ring. The shaft (607) is rotatably connected to the U-shaped block (609) through a rotary bearing.

3. The cryogenically resistant extendable flamethrower nozzle according to claim 2, characterized in that: The pulling mechanism includes a steel rope (610) installed in the sleeve, a bushing (611) fixedly connected to the shaft, and a lever (612) fixedly connected to the bushing. The lever (612) has a round hole. The bottom of the sleeve (608) near the U-shaped block has a through hole (613). One end of the steel rope (610) is connected to a spherical handle (614), and the other end passes through the through hole (613) and is fixedly connected to the round hole on the lever (612).

4. The cryogenically resistant extendable flamethrower nozzle according to claim 3, characterized in that: A ball valve (7) is installed on the branch pipe (3).

5. The cryogenically resistant extendable flamethrower nozzle according to claim 4, characterized in that: A handle (615) is connected to the outer wall of the outer tube (601) near the rotary sealing joint (4).

6. The cryogenically resistant extendable flamethrower nozzle according to claim 5, characterized in that: The outer tube (601) comprises, from the outside to the inside, an antifreeze and weather-resistant layer, a flexible insulation layer, and an anti-corrosion flow guiding layer.

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