Multi-functional fire-fighting lance

Abstract

The utility model discloses a multifunctional fire-fighting spray gun rod relates to fire-fighting equipment technical field. The utility model discloses a fire water gun body, one end of fire water gun body is linked with fixed cylinder, and the fixed cylinder inner chamber is opened with a plurality of placing grooves, and a plurality of placing grooves inner chamber are equipped with the ball bearing, and the fixed cylinder outer wall is fixed with the fixed mounting of the contact ring. The utility model discloses through the rotation spray gun rod with hand, makes a plurality of first water outlet hole and a plurality of first through -hole on the spray gun rod dislocation each other and shelter, and the effective path section area of water flow from first water outlet hole and first through -hole is reduced, at this moment, when the high pressure water flow is through this narrow passage, the originally concentrated water flow is broken into a large number of tiny liquid drops, and finally presents the mist effect, and then to control the fire spread, when makes first water outlet hole and first through -hole completely overlap, and the section area of water flow channel reaches maximum, and water flow forms the jet flow, is suitable for penetrating the flame, and directly hits the scene such as fire source root portion.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection equipment technology, and specifically relates to a multi-functional fire-fighting spray gun boom. Background Technology

[0002] In the complex scenarios of firefighting operations, the situation at the fire scene changes rapidly. In addition to the conventional firefighting needs, it is also crucial to quickly and effectively break through obstacles to rescue trapped personnel and open up rescue channels. In reality, fire-fighting and rescue operations often use fire-breaking water guns. However, in practical applications, the installation method of the spray gun rod and the water gun, as well as the jet adjustment function, have obvious deficiencies, which seriously affect the efficiency of rescue operations.

[0003] From the installation of the spray gun rod and water gun, most spray gun rods adopt the traditional threaded connection method. In emergency fire fighting scenarios, the drawbacks of this connection method are particularly prominent. Threaded connections require firefighters to align the threads and repeatedly rotate and tighten them, which is a cumbersome and time-consuming process. Moreover, the spray gun rod cannot flexibly adjust the water flow according to the specific fire situation. For example, when fighting small fires in the early stages, a fine mist of water is needed to control the spread of the fire and avoid secondary damage to the scene caused by large amounts of water. However, when facing a fiercely burning fire, a strong direct jet is needed to penetrate the flames and hit the root of the fire. However, most existing spray gun rods can only spray a single type of water flow, which cannot meet the diverse fire fighting needs.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a multifunctional fire-fighting spray gun boom to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a multifunctional fire-fighting spray gun rod, including a fire gun body, one end of which is connected to a fixed cylinder. The fixed cylinder has several placement grooves in its inner cavity, and ball bearings are installed in the inner cavity of the several placement grooves. An abutment ring is fixedly installed on the outer wall of the fixed cylinder. A pull cylinder is slidably installed on the outside of the fixed cylinder. An elastic element is fixedly installed between the pull cylinder and the abutment ring. An inclined groove is opened on the inner wall of the pull cylinder. Several slots are opened at one end of the fixed cylinder. The fixed cylinder is equipped with an insert rod, and the insert rod has several insertion slots on its circumferential surface. One side of the insertion slot is inclined. Several insert blocks are fixedly installed on the outer wall of the insert rod. A connecting block is fixedly installed at one end of the insert rod. An inner tube is fixedly installed on the inner wall of the insert rod. Several first through holes and several second through holes are opened on the inner tube. A spray gun rod is rotatably mounted on the inner wall of the connecting block. The spray gun rod has several first water outlet holes. The end of the spray gun rod away from the connecting block is connected to a gun head, and the gun head has several second water outlet holes.

[0007] Furthermore, an inner ring is fixedly installed on the inner wall of the fixed cylinder, and a sealing groove is formed in the inner ring.

[0008] Furthermore, a seal is fixedly installed at one end of the insertion rod.

[0009] Furthermore, the outer wall of the pull tube is provided with several anti-slip grooves.

[0010] Furthermore, the first water outlet and the second water outlet have the same diameter, and a plurality of the first water outlets correspond to a plurality of the first through holes, and a plurality of the second through holes correspond to a plurality of the second water outlets.

[0011] Furthermore, the gun head is made of high-strength alloy steel.

[0012] Furthermore, the number of the inserts is equal to the number of the slots.

[0013] This utility model has the following beneficial effects: This invention involves manually rotating the spray gun rod, causing several first water outlets and several first through holes on the rod to misalign and block each other. This reduces the effective cross-sectional area of ​​the water flow from the first water outlets and first through holes. At this time, when the high-pressure water flows through this narrow channel, the originally concentrated water flow is broken into a large number of fine droplets, ultimately presenting a mist effect, thereby controlling the spread of fire. When the first water outlets and first through holes completely overlap, the cross-sectional area of ​​the water flow channel reaches its maximum, and the water flow forms a jet-like water flow, which is suitable for scenarios such as penetrating flames and directly hitting the root of the fire source.

[0014] This invention releases the elastic potential energy of the elastic element by releasing the pull tube, which pushes the pull tube away from the fire hose body. The inclined surface of the inclined groove pushes several balls to move in the placement groove and enter the slot one by one until the inner wall of the pull tube contacts the balls in the slot. Then the spray gun rod on the insert rod is installed. The entire installation process only requires pulling the pull tube to insert the insert rod into the inner cavity of the fixed tube and releasing the pull tube to complete the installation of the insert rod and the spray gun rod. There is no need to repeatedly rotate and tighten the spray gun rod and the fire hose, which can complete the quick installation and greatly shorten the time required for the operation process.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the first partial structure of the present invention; Figure 3 This is a schematic diagram of the second partial structure of the present invention; Figure 4 This is a partial sectional view of the spray gun rod of this utility model; Figure 5 for Figure 3 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view at point B in the middle; Figure 7 This is a partial sectional view of the pull tube of this utility model; Figure 8 This is a schematic diagram of the third part of the structure of this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 1. Fire nozzle body; 2. Fixing cylinder; 201. Placement groove; 202. Slot; 3. Inner ring; 301. Sealing groove; 4. Ball bearing; 5. Contact ring; 6. Pulling cylinder; 601. Inclined groove; 602. Anti-slip groove; 7. Elastic element; 8. Insert rod; 801. Insert groove; 9. Sealing element; 10. Insert block; 11. Connecting block; 12. Inner tube; 1201. First through hole; 1202. Second through hole; 13. Spray gun rod; 1301. First water outlet; 14. Gun head; 1401. Second water outlet. Detailed Implementation

[0019] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0020] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements 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 utility model.

[0021] Please see Figures 1-8 As shown, this utility model is a multifunctional fire-fighting spray gun rod, including a fire gun body 1. One end of the fire gun body 1 is connected to a fixed cylinder 2. The inner cavity of the fixed cylinder 2 is provided with several placement grooves 201. The inner cavity of the several placement grooves 201 is provided with ball bearings 4. An abutment ring 5 is fixedly installed on the outer wall of the fixed cylinder 2. A pull cylinder 6 is slidably installed on the outside of the fixed cylinder 2. An elastic element 7 is fixedly installed between the pull cylinder 6 and the abutment ring 5. An inclined groove 601 is provided on the inner wall of the pull cylinder 6. A several slots 202 are provided at one end of the fixed cylinder 2. The inner cavity of the fixed cylinder 2 is equipped with a plug rod 8. The plug rod 8 has several insertion grooves 801 on its circumferential surface. One side of the insertion groove 801 is inclined. Several plug blocks 10 are fixedly installed on the outer wall of the plug rod 8. A connecting block 11 is fixedly installed at one end of the plug rod 8. An inner tube 12 is fixedly installed on the inner wall of the plug rod 8. Several first through holes 1201 and several second through holes 1202 are opened on the inner tube 12. A spray gun rod 13 is rotatably mounted on the inner wall of the connecting block 11. The spray gun rod 13 has a plurality of first water outlet holes 1301. The end of the spray gun rod 13 away from the connecting block 11 is connected to a gun head 14. The gun head 14 has a plurality of second water outlet holes 1401. The first water outlet 1301 and the second water outlet 1401 have the same diameter. A number of the first water outlets 1301 correspond to a number of the first through holes 1201, and a number of the second through holes 1202 correspond to a number of the second water outlets 1401. The gun head 14 is made of high-strength alloy steel.

[0022] When the spray gun rod 13 needs to be installed, the firefighter pulls the pull tube 6 towards the fire gun body 1. Since the pull tube 6 and the contact ring 5 are fixedly installed with an elastic element 7, the moved pull tube 6 will compress the elastic element 7 (the elastic element 7 is preferably a spring) and store elastic potential energy. During the movement, the inclined groove 601 on the pull tube 6 gradually slides to the position of the ball 4, and the inner wall of the pull tube 6 no longer contacts the ball 4, so that the ball 4 can move freely in its respective placement groove 201. It should be noted that the placement groove 201 is tapered, that is, the diameter of the placement groove 201 at the inner wall of the fixed cylinder 2 is smaller than the diameter at the outer wall of the fixed cylinder 2, and the diameter of the placement groove 201 at the inner wall of the fixed cylinder 2 is smaller than the diameter of the ball 4, so as to ensure that the ball 4 cannot fall through the placement groove 201 at the inner wall of the fixed cylinder 2. Firefighters then insert the insertion rod 8 into the inner cavity of the fixed cylinder 2, ensuring that each insertion block 10 on the insertion rod 8 is inserted into one of the corresponding slots 202 on the fixed cylinder 2. During insertion, the outer wall of the insertion rod 8 simultaneously pushes several ball bearings 4 to move, allowing them to enter the inclined groove 601, thus providing space for the insertion rod 8 to enter. Then, the pull tube 6 is released, releasing the elastic potential energy of the elastic element 7, pushing the pull tube 6 away from the fire hose body 1. The inclined surface of the inclined groove 601 on the pull tube 6 will then... The rollers 4 are pushed to move in the placement groove 201 and enter the slot 202 of the insert rod 8 one by one until the inner wall of the pull tube 6 presses the rollers 4 against the slot 202, thus completing the installation. Then the spray gun rod 13 on the insert rod 8 is also installed. The entire installation process only requires pulling the pull tube 6 to insert the insert rod 8 into the inner cavity of the fixing tube 2 and releasing the pull tube 6 to complete the installation of the insert rod 8 and the spray gun rod 13. There is no need to repeatedly rotate and tighten the spray gun rod 13 and the water gun to complete the quick installation, which greatly shortens the time required for the operation process. When it is necessary to quickly break down an obstacle, pick up the spray gun handle 13 by hand to transfer the force to the gun head 14, so that the tip of the gun head 14 concentrates the force on the surface of the obstacle. Due to the small tip area, the force can be highly concentrated to form a powerful piercing effect, thereby quickly breaking through the structural strength of the obstacle and achieving efficient demolition of obstacles such as doors, windows and walls. The gun head 14 is made of high-strength alloy steel, which has extremely high hardness and strength and can withstand the huge impact and friction generated during the demolition process. The fire hose reel body 1 is connected to a fire hose pipe. Water flows into the fire hose reel body 1, then into the nozzle 8, and finally into the inner pipe 12. The water then exits through several first through holes 1201 and several second through holes 1202. The water exiting through the first through holes 1201 then exits through several first outlet holes 1301, and the water exiting through the second through holes 1202 then exits through several second outlet holes 1401. The water exiting through the first outlet holes 1301 and the second outlet holes 1401 impacts the fire-fighting area to achieve fire-fighting operations. When the water flow needs to be adjusted according to different fire conditions, simply rotate the spray gun rod 13 by hand. The rotation of the spray gun rod 13 causes the several first water outlet holes 1301 and several first through holes 1201 on the spray gun rod 13 to be misaligned and mutually block each other, reducing the effective cross-sectional area of ​​the water flow from the first water outlet holes 1301 and the first through holes 1201. At this time, the high-pressure water flow velocity increases sharply when passing through this narrow channel, generating a strong shearing effect. The originally concentrated water flow is broken into a large number of fine droplets, ultimately presenting a mist effect, thereby controlling the spread of fire. When the first water outlet holes 1301 and the first through holes 1201 completely overlap, the cross-sectional area of ​​the water flow channel reaches its maximum. At this time, the water flow experiences the least resistance and can be sprayed out with high pressure and concentrated form, forming a jet-like water flow, which is suitable for scenarios such as penetrating flames and directly hitting the root of the fire source. In addition, the spray gun rod 13 can be rotated back and forth continuously, so that the shape of the water flow can be continuously switched between mist and jet.

[0023] In one embodiment, for the aforementioned fixed cylinder 2, an inner ring 3 is fixedly installed on the inner wall of the fixed cylinder 2, a sealing groove 301 is provided in the inner ring 3, and a sealing element 9 is fixedly installed at one end of the insertion rod 8.

[0024] During the insertion of the insert rod 8 into the fixing cylinder 2, the sealing element 9 (preferably a sealing ring) comes into contact with the sealing groove 301. As the insert rod 8 continues to enter, the insert rod 8 squeezes the sealing element 9, causing it to deform within the sealing groove 301, thereby preventing water from being discharged from the gap between the fixing cylinder 2 and the insert rod 8.

[0025] In one embodiment, the outer wall of the pull tube 6 is provided with a plurality of anti-slip grooves 602.

[0026] When the pull cylinder 6 is pulled, the anti-slip grooves 602 on it increase the friction between the hand and the pull cylinder 6.

[0027] In one embodiment, the number of the aforementioned insert blocks 10 is equal to the number of the slots 202.

[0028] To ensure that each insert 10 can be inserted into the corresponding slot 202 when the insert rod 8 is installed, the slot 202 here provides a guiding function for the insert 10, so as to avoid the position of the several insert grooves 801 and the several balls 4 being deviated after the insert rod 8 is inserted into the fixing cylinder 2, so that the several balls 4 can enter the several insert grooves 801.

[0029] Working principle: When it is necessary to install the spray gun rod 13, pull the pull cylinder 6 by hand. The pull cylinder 6 compresses the elastic element 7, and the inner wall of the pull cylinder 6 no longer contacts the ball bearings 4, allowing the ball bearings 4 to move freely in their respective placement slots 201. Then, pick up the insertion rod 8 and insert it into the inner cavity of the fixed cylinder 2, ensuring that each insertion block 10 is inserted into several slots 202 respectively. At the same time, the insertion rod 8 squeezes the sealing element 9, causing it to deform in the sealing groove 301. During the insertion process, the outer wall of the insertion rod 8 pushes several ball bearings 4 to move, so that several ball bearings 4 enter the inclined groove 601. Then, release the pull cylinder 6, and the elastic potential energy of the elastic element 7 is released, pushing the pull cylinder 6 to move away from the fire gun body 1. The inclined surface of the inclined groove 601 pushes several ball bearings 4 to move in the placement groove 201 and enter the slots 202 one by one, thus completing the installation. In this way, the spray gun rod 13 on the insertion rod 8 is also installed. When it is necessary to quickly break through an obstacle, pick up the spray gun handle 13 by hand to transfer the force to the gun head 14, so that the tip of the gun head 14 concentrates the force on the surface of the obstacle, forming a powerful piercing effect, thereby quickly breaking through the structural strength of the obstacle. The gun head 14 is made of high-strength alloy steel, which has extremely high hardness and strength. Water from the fire hose enters the fire nozzle body 1, then flows through the fire nozzle body 1 into the insertion rod 8 and inner tube 12, and is discharged from several first through holes 1201 and several second through holes 1202. The water discharged from the several first through holes 1201 is discharged through several first water outlet holes 1301, and the water discharged from the several second through holes 1202 is discharged through several second water outlet holes 1401 respectively. The water discharged from the several first water outlet holes 1301 and several second water outlet holes 1401 impacts the fire-fighting area to achieve fire-fighting operation. When the state of the water jet needs to be adjusted according to different fire conditions, the spray gun rod 13 is rotated by hand, so that the first water outlet holes 1301 and the first through holes 1201 on the spray gun rod 13 are misaligned and block each other. The effective cross-sectional area of ​​the water jet exiting from the first water outlet holes 1301 and the first through holes 1201 is reduced. At this time, when the high-pressure water jet passes through this narrow channel, the originally concentrated water jet is broken into a large number of fine droplets, and finally presents a mist effect. When the first water outlet holes 1301 and the first through holes 1201 are completely overlapped, the cross-sectional area of ​​the water jet channel reaches the maximum, and the water jet forms a jet-like water jet.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-functional fire-fighting spray gun boom, comprising a fire nozzle body (1), characterized in that: One end of the fire hose body (1) is connected to a fixed cylinder (2). The inner cavity of the fixed cylinder (2) is provided with several placement grooves (201). The inner cavity of the several placement grooves (201) is provided with ball bearings (4). The outer wall of the fixed cylinder (2) is fixedly installed with a contact ring (5). The outside of the fixed cylinder (2) is slidably installed with a pull cylinder (6). An elastic element (7) is fixedly installed between the pull cylinder (6) and the contact ring (5). The inner wall of the pull cylinder (6) is provided with an inclined groove (601). One end of the fixed cylinder (2) is provided with several slots (202). The inner cavity of the fixed cylinder (2) is equipped with a plug rod (8). The plug rod (8) has several insertion grooves (801) on its circumferential surface. One side of the insertion groove (801) is inclined. Several plug blocks (10) are fixedly installed on the outer wall of the plug rod (8). A connecting block (11) is fixedly installed at one end of the plug rod (8). An inner tube (12) is fixedly installed on the inner wall of the plug rod (8). Several first through holes (1201) and several second through holes (1202) are opened on the inner tube (12). A spray gun rod (13) is rotatably mounted on the inner wall of the connecting block (11). The spray gun rod (13) has several first water outlet holes (1301). The end of the spray gun rod (13) away from the connecting block (11) is connected to a gun head (14). The gun head (14) has several second water outlet holes (1401).

2. The multifunctional fire-fighting spray gun boom according to claim 1, characterized in that, An inner ring (3) is fixedly installed on the inner wall of the fixed cylinder (2), and a sealing groove (301) is provided in the inner ring (3).

3. The multifunctional fire-fighting spray gun boom according to claim 1, characterized in that, A sealing element (9) is fixedly installed at one end of the insertion rod (8).

4. A multi-functional fire-fighting spray gun boom according to claim 1, characterized in that, The outer wall of the pull tube (6) is provided with several anti-slip grooves (602).

5. A multi-functional fire-fighting spray gun boom according to claim 1, characterized in that, The first water outlet (1301) and the second water outlet (1401) have the same diameter. A plurality of the first water outlets (1301) correspond to a plurality of the first through holes (1201), and a plurality of the second through holes (1202) correspond to a plurality of the second water outlets (1401).

6. A multi-functional fire-fighting spray gun boom according to claim 1, characterized in that, The gun head (14) is made of high-strength alloy steel.

7. A multi-functional fire-fighting spray gun boom according to claim 1, characterized in that, The number of the inserts (10) is equal to the number of the slots (202).

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