Fire-fighting lance with bidirectional water curtain function
By installing bidirectional nozzles and a rotating ring mechanism on the fire hose, bidirectional water curtain spraying is achieved, solving the problem of poor fire extinguishing performance of existing fire hoses and improving fire extinguishing efficiency and personnel protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-22
- Publication Date
- 2026-04-03
AI Technical Summary
The existing fire hoses have an unreasonable structure, can only spray a single water curtain, have poor fire extinguishing performance, and firefighters are prone to injury during firefighting.
Design a fire hose with a two-way water curtain function. The nozzle has front and rear spray holes set at the nozzle through a connecting component. The opening and closing of the spray holes are controlled by a ring body and a rotating ring mechanism to achieve bidirectional spraying in both directions, forming multiple water curtains to enhance the fire extinguishing effect and protect firefighters.
It improves fire extinguishing efficiency, increases the fire extinguishing coverage area and density, protects firefighters from heat radiation damage from fire sources, simplifies operating procedures, and improves the efficiency of responding to emergencies.
Smart Images
Figure CN121775384A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of fire-fighting equipment technology, specifically relating to a fire hose with a two-way water curtain function. Background Technology
[0002] A fire hose is a type of firefighting equipment, usually used in conjunction with other firefighting devices, to spray water or foam for fire suppression. For example, a fire hose, when used with a water pump, can spray a water curtain for fire extinguishing.
[0003] Existing fire hoses have an unreasonable structure, only able to spray extinguishing material from the nozzle to form a water curtain, resulting in poor fire extinguishing performance. Furthermore, firefighters typically need to approach the fire source during firefighting, where they are exposed to high temperatures and are susceptible to burns from heat radiation. Current fire hoses cannot spray water directly onto firefighters, further increasing their risk of injury during firefighting. Summary of the Invention
[0004] This invention provides a fire hose with a two-way water curtain function, aiming to solve the problem that existing fire hoses have unreasonable structures and can only spray a single water curtain.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:
[0006] A fire hose with a two-way water curtain function includes a hose body, a handle on the hose body, a control valve on the hose body, an operating part on the control valve for easy operation, and a nozzle on the hose body for spraying fire extinguishing material forward.
[0007] The nozzle is mounted on the gun body via a connecting assembly. The extinguishing material flows sequentially through the control valve, the connecting assembly, and the nozzle. The connecting assembly is provided with a front nozzle that sprays the extinguishing material forward and a rear nozzle that sprays the extinguishing material backward. The extinguishing material sprayed forward by the nozzle forms a first water curtain, the extinguishing material sprayed forward by the front nozzle forms a second water curtain, and the extinguishing material sprayed backward by the rear nozzle forms a third water curtain.
[0008] The connecting component is also provided with a control mechanism for opening or closing the front spray hole and the rear spray hole.
[0009] A further improved solution: The connecting assembly includes a tube body, one end of which is fixed to the gun body by a thread, and the other end of which is fixed to the nozzle by a thread. Both the gun body and the nozzle are connected to the tube body. The front spray hole is located on the tube body near the nozzle, and the rear spray hole is located on the tube body near the gun body.
[0010] Based on the above technical solution: one end of the tube is fixed to the gun body by threads, and the other end is fixed to the nozzle by threads. Threaded connection is a common and reliable connection method. It has self-locking properties and can ensure a stable connection between the tube body, gun body, and nozzle under normal use and under certain external forces, making it difficult to loosen or fall off.
[0011] A further improved solution: The control mechanism includes a front ring body disposed on the pipe body and a rear ring body disposed on the pipe body. When the front ring body blocks the front spray hole, the front spray hole is closed; when the front ring body is misaligned with the front spray hole, the front spray hole is opened. When the rear ring body blocks the rear spray hole, the rear spray hole is closed; when the rear ring body is misaligned with the rear spray hole, the rear spray hole is opened.
[0012] Based on the above technical solution, the operation is controlled by using front and rear annular bodies to obstruct or offset the front and rear nozzles, respectively. This method is very intuitive. In actual firefighting operations, firefighters can quickly open or close the front and rear nozzles by simply rotating or moving the front and rear annular bodies to obstruct or offset them from the corresponding nozzles. In emergencies, firefighters do not need complex operating procedures; they can quickly determine the nozzle's on / off status by visual observation and make timely adjustments, greatly saving operation time and improving firefighting efficiency.
[0013] A further improved solution: the front ring body is threaded onto the tube body, the rear ring body is threaded onto the tube body, the tube body is provided with external threads, and the front ring body and the rear ring body are respectively provided with internal threads that mate with the external threads on the tube body.
[0014] Based on the above technical solution: Since the front and rear annular bodies are connected to the pipe body via threads, firefighters can precisely adjust their positions on the pipe body by rotating the annular bodies. This adjustment method is very precise and can meet the accurate requirements for the opening and closing of the front and rear nozzles and the adjustment of the flow rate in different firefighting scenarios. When fighting fires that require high firefighting power, firefighters can fine-tune the positions of the front and rear annular bodies to achieve the optimal ratio of water output from the front and rear nozzles, thereby improving the firefighting effect.
[0015] A further improved solution: Both the front ring and the rear ring are slidably connected to the pipe body. The control mechanism further includes a front rotating ring that controls the sliding of the front ring to open or close the front spray hole. The control mechanism also includes a rear rotating ring that controls the sliding of the rear ring to open or close the rear spray hole. The pipe body is provided with a guide ridge. Both the front and rear rings are provided with guide grooves that cooperate with the guide ridge. The front rotating ring is provided with an internal thread that pushes the front ring to move. The front ring is provided with an external thread that cooperates with the internal thread on the front rotating ring. The rear rotating ring is provided with an internal thread that pushes the rear ring to move. The rear ring is provided with an external thread that cooperates with the internal thread on the rear rotating ring.
[0016] Based on the above technical solution: the front and rear rings are slidably connected to the pipe body, and their sliding is controlled by the front and rear rotating rings respectively. This design allows firefighters to precisely control the sliding distance of the front and rear rings by rotating the front and rear rotating rings. Due to the precise transmission ratio of the threaded engagement, each rotation of a certain angle will cause the front and rear rings to move a specific distance along the pipe body, thereby enabling precise opening or closing of the front and rear nozzles, as well as adjustment of the nozzle opening degree.
[0017] A further improved solution: the external thread of the front ring body is opposite to the external thread of the rear ring body, the front rotating ring and the rear rotating ring are an integral structure, and by operating the front rotating ring or the rear rotating ring, the front ring body and the rear ring body move in opposite directions at the same time, so as to open or close the front spray hole and the rear spray hole simultaneously.
[0018] Based on the above technical solution: Since the front and rear rotating rings are an integrated structure, firefighters only need to operate this single rotating ring to simultaneously control the movement of both the front and rear rings. Furthermore, the external threads of the front and rear rings rotate in opposite directions, ensuring that rotating the integrated rotating ring causes both rings to move in opposite directions simultaneously. This means firefighters can easily open or close the front and rear nozzles simultaneously with one hand. In emergency firefighting scenarios, firefighters can quickly rotate the integrated rotating ring with the same finger while holding the fire hose, rapidly adjusting the spray pattern and significantly saving operation time, thus improving efficiency in responding to emergencies.
[0019] A further improved solution: An operating ring is also provided on the pipe body, rotatably connected to the pipe body. A control ring is fitted over the operating ring, rotatably connected to the operating ring. The control ring is slidably connected to the operating ring along the axial direction. When the control ring slides to a first position, a portion of the front rotating ring extends into the control ring, and the rear rotating ring disengages from the control ring. Rotating the control ring drives the front ring body to move via the front rotating ring to open or close the front spray hole. When the control ring slides to a second position, a portion of the rear rotating ring extends into the control ring, and the front rotating ring disengages from the control ring. Rotating the control ring drives the rear ring body to move via the rear rotating ring to open or close the rear spray hole.
[0020] Based on the above technical solution, firefighters can independently control the front and rear nozzles by sliding the control ring to different positions. When the control ring slides to the first position, a portion of the front rotating ring extends into the control ring. Rotating the control ring at this time transmits power to the front ring body via the front rotating ring, driving the front ring body to move and open or close the front nozzle. The rear rotating ring disengages from the control ring and is unaffected by this operation. Similarly, when the control ring slides to the second position, the rear rotating ring cooperates with the control ring, allowing independent control of the rear ring body to operate the rear nozzle.
[0021] A further improved solution: An elastic element is provided between the control ring and the rotating ring, and the elastic element pushes the control ring so that the control ring is located between the front rotating ring and the rear rotating ring.
[0022] Based on the above technical solution: the elastic element pushes the control ring to position it between the front and rear rotating rings, providing the control ring with an automatic reset function. After firefighters complete the operation of the front or rear spray nozzles, there is no need to manually slide the control ring back to a specific position; the elastic element will automatically push the control ring back to the middle position between the front and rear rotating rings.
[0023] A further improved solution: the elastic element is sleeved on the operating ring, and the control ring is provided with an annular groove to accommodate the elastic element. One end of the elastic element is disposed on the operating ring, and the other end of the elastic element is disposed on the control ring.
[0024] Based on the above technical solution: the elastic element is sleeved on the operating ring, and a groove is provided inside the control ring to accommodate the elastic element. This design precisely defines the position of the elastic element. During the operation of the fire hose, regardless of how the control ring rotates or slides, the elastic element remains stably positioned between the operating ring and the groove, without shifting or falling off. When firefighters quickly rotate the control ring to open or close the nozzle, the elastic element still accurately performs its elastic function, ensuring the normal reset function of the control ring, thereby improving the reliability of the entire control mechanism.
[0025] A further improved solution: The operating ring is provided with a protruding ridge, the elastic element is a spring, one end of the spring contacts the protruding ridge, and the other end of the spring contacts the side wall of the ring groove.
[0026] Based on the above technical solution, the spring is positioned using the protruding ridges on the operating ring, eliminating the need for additional space to install the spring fixing device, thus saving space in the control mechanism. In space-constrained equipment like fire hoses, a compact structural design is crucial. This space-saving design allows the control mechanism to be smaller and lighter, making it easier for firefighters to carry and operate.
[0027] The beneficial effects of this invention are as follows:
[0028] This invention utilizes nozzles to spray extinguishing material forward, forming a first water curtain, and connecting components to use front nozzles to spray extinguishing material forward, forming a second water curtain. These two forward-spraying water curtains work together to significantly increase the coverage area and density of the sprayed extinguishing material. When extinguishing large-area fires, the two water curtains can strike the fire source from different angles and ranges, more effectively controlling the spread of the fire and improving extinguishing efficiency.
[0029] The rear nozzles on the connecting assembly spray extinguishing material backward, forming a third water curtain. This jet of water directly impacts the area around firefighters. As firefighters approach the fire source to extinguish it, the third water curtain acts as a water barrier, absorbing and blocking the heat emitted by the fire, reducing the harm of heat radiation to firefighters.
[0030] The easy-to-operate control unit on the control valve allows firefighters to quickly and accurately adjust the valve to control the flow and pressure of extinguishing materials. Attached Figure Description
[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For users of ordinary skills in the art, other related drawings can be obtained from these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of a fire hose with a two-way water curtain function according to the present invention.
[0033] Figure 2 This is a schematic diagram of the internal structure of a fire hose with a two-way water curtain function according to the present invention.
[0034] Figure 3 This is a schematic diagram of the internal structure of the connecting component in a fire hose with a two-way water curtain function according to the present invention.
[0035] Figure 4 This is a schematic diagram of the connecting components in a fire hose with a two-way water curtain function according to the present invention.
[0036] Explanation of the labels in the diagram:
[0037] 1-Gun body; 2-Handle; 3-Control valve; 4-Operating unit; 5-Front spray port; 6-Rear spray port; 7-Tube body; 8-Front ring body; 9-Rear ring body; 10-Front rotating ring; 11-Rear rotating ring; 12-Operating ring; 13-Control ring; 14-Nozzle. Detailed Implementation
[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. All other embodiments obtained by users of the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.
[0039] refer to Figures 1 to 4 A fire hose with a two-way water curtain function includes a gun body 1, a handle 2 on the gun body 1, a control valve 3 on the gun body 1, an operating part 4 on the control valve 3 for easy operation, and a nozzle 14 on the gun body 1 for spraying fire extinguishing material forward.
[0040] The nozzle is mounted on the gun body 1 via a connecting assembly. The extinguishing material flows sequentially through the control valve 3, the connecting assembly, and the nozzle. The connecting assembly is provided with a front nozzle 5 that sprays extinguishing material forward and a rear nozzle 6 that sprays extinguishing material backward. The extinguishing material sprayed forward by the nozzle forms a first water curtain, the extinguishing material sprayed forward by the front nozzle 5 forms a second water curtain, and the extinguishing material sprayed backward by the rear nozzle 6 forms a third water curtain.
[0041] The connecting assembly is also provided with a control mechanism for opening or closing the front spray hole 5 and the rear spray hole 6.
[0042] Wherein: the connecting assembly includes a tube body 7, one end of the tube body 7 is fixed to the gun body 1 by a thread, the other end of the tube body 7 is fixed to the nozzle by a thread, the gun body 1 and the nozzle are both connected to the tube body 7, the front spray hole 5 is provided on the tube body 7 near the nozzle, and the rear spray hole 6 is provided on the tube body 7 near the gun body 1.
[0043] Specifically: The control mechanism includes a front ring 8 disposed on the pipe body 7 and a rear ring 9 disposed on the pipe body 7. When the front ring 8 blocks the front spray hole 5, the front spray hole 5 is closed; when the front ring 8 is misaligned with the front spray hole 5, the front spray hole 5 is opened. When the rear ring 9 blocks the rear spray hole 6, the rear spray hole 6 is closed; when the rear ring 9 is misaligned with the rear spray hole 6, the rear spray hole 6 is opened.
[0044] The control mechanism may also be: the front ring 8 is threaded onto the tube 7, the rear ring 9 is threaded onto the tube 7, the tube 7 is provided with an external thread, and the front ring 8 and the rear ring 9 are respectively provided with internal threads that mate with the external threads on the tube 7. Both the front ring 8 and the rear ring 9 are slidably connected to the tube body 7. The control mechanism further includes a front rotating ring 10 that controls the sliding of the front ring 8 to open or close the front spray hole 5. The control mechanism also includes a rear rotating ring 11 that controls the sliding of the rear ring 9 to open or close the rear spray hole 6. The tube body 7 is provided with a guide ridge. Both the front ring 8 and the rear ring 9 are provided with guide grooves that cooperate with the guide ridge. The front rotating ring 10 is provided with an internal thread that pushes the front ring 8 to move. The front ring 8 is provided with an external thread that cooperates with the internal thread on the front rotating ring 10. The rear rotating ring 11 is provided with an internal thread that pushes the rear ring 9 to move. The rear ring 9 is provided with an external thread that cooperates with the internal thread on the rear rotating ring 11. The external threads of the front ring 8 and the rear ring 9 rotate in opposite directions. The front rotating ring 10 and the rear rotating ring 11 are an integral structure. By operating the front rotating ring 10 or the rear rotating ring 11, the front ring 8 and the rear ring 9 can be moved simultaneously in opposite directions to open or close the front spray nozzle 5 and the rear spray nozzle 6 at the same time. This control mechanism design allows firefighters to operate the system with one hand. Since both the front ring 8 and the rear ring 9 are mounted on the pipe body 7 and the operation is relatively simple, firefighters can easily rotate or move the rings with their other hand to control the opening and closing of the spray nozzles while holding the fire hose. This is very useful in special situations, such as when firefighters need to operate other firefighting equipment or perform climbing actions. The one-handed operation of the fire hose control mechanism allows them to respond more flexibly to various situations.
[0045] The control mechanism can also be as follows: an operating ring 12 is provided on the pipe body 7, the operating ring 12 is rotatably connected to the pipe body 7, a control ring 13 is sleeved on the operating ring 12, the control ring 13 is rotatably connected to the operating ring 12, and the control ring 13 is slidably connected to the operating ring 12 along the axial direction. When the control ring 13 slides to the first position, a part of the front rotating ring 10 extends into the control ring 13, and the rear rotating ring 11 disengages from the control ring 13. Rotating the control ring 13 drives the front ring body 8 to move through the front rotating ring 10 to open or close the front spray hole 5. When the control ring 13 slides to the second position, a part of the rear rotating ring 11 extends into the control ring 13, the front rotating ring 10 disengages from the control ring 13, and rotating the control ring 13 drives the rear ring body 9 to move through the rear rotating ring 11 to open or close the rear spray hole 6. The control ring 13 can transmit power to the forward rotating ring 10 or the backward rotating ring 11 via its polygonal inner wall. An elastic element is provided between the rotating rings of the control ring 13, pushing the control ring 13 so that it is positioned between the forward rotating ring 10 and the backward rotating ring 11. The elastic element is sleeved on the operating ring 12, and the control ring 13 has an annular groove to accommodate the elastic element. One end of the elastic element is located on the operating ring 12, and the other end is located on the control ring 13. The operating ring 12 has a protruding rib, and the elastic element is a spring. One end of the spring contacts the protruding rib, and the other end contacts the side wall of the annular groove. The operating ring 12 is rotatably connected to the tube body 7, and the control ring 13 is rotatably and slidably connected to the operating ring 12. This multi-layered nested integrated design fully utilizes the space around the tube body 7, making the entire control mechanism structure compact. In space-constrained equipment like fire hoses, a compact structure can reduce the overall size and weight of the equipment, making it easier for firefighters to carry and operate.
[0046] The working principle of this embodiment:
[0047] When fire hoses are used in conjunction with fire-fighting equipment such as water pumps, the water pump pressurizes and delivers water and other extinguishing agents to the nozzle body 1 of the fire hose. The extinguishing agent first enters the control valve 3, which regulates and controls the extinguishing agent. By operating the operating part 4 on the control valve 3, the flow rate and pressure of the extinguishing agent can be changed. When it is necessary to increase the extinguishing power, the operating part 4 can be operated to open the control valve 3 wider, allowing more extinguishing agent to pass through; when it is necessary to reduce the extinguishing power or to achieve precise spraying, the control valve 3 can be closed.
[0048] After being regulated by control valve 3, the extinguishing material enters the connecting assembly, which connects the gun body 1 and the nozzle, and is equipped with front spray holes 5 and rear spray holes 6. After entering the nozzle from the connecting assembly, the extinguishing material is sprayed forward at a certain pressure and angle, forming a first water curtain. The front spray holes 5 on the connecting assembly also spray extinguishing material forward, forming a second water curtain. The number and distribution of the front spray holes 5 can be designed according to actual needs. The extinguishing material sprayed simultaneously from multiple front spray holes 5 overlaps, further enhancing the force and range of forward fire suppression. For example, in some large fire scenes, multiple front spray holes 5 can simultaneously spray fire sources at different locations, improving fire suppression efficiency.
[0049] The rear spray nozzle 6 on the connecting assembly sprays a portion of the extinguishing material backward, forming a third water curtain. This allows the water jet to accurately cover the area around firefighters. When firefighters approach the fire source, the third water curtain effectively blocks the heat radiation from the fire, providing protection for the firefighters.
[0050] This invention is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this invention. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this invention are within the protection scope of this invention.
Claims
1. A fire hose with a two-way water curtain function, characterized in that: The gun includes a gun body, a handle is provided on the gun body, a control valve is also provided on the gun body, an operating part is provided on the control valve for easy operation, and a nozzle is also provided on the gun body to spray fire extinguishing material forward. The nozzle is mounted on the gun body via a connecting assembly. The extinguishing material flows sequentially through the control valve, the connecting assembly, and the nozzle. The connecting assembly is provided with a front nozzle that sprays the extinguishing material forward and a rear nozzle that sprays the extinguishing material backward. The extinguishing material sprayed forward by the nozzle forms a first water curtain, the extinguishing material sprayed forward by the front nozzle forms a second water curtain, and the extinguishing material sprayed backward by the rear nozzle forms a third water curtain. The connecting component is also provided with a control mechanism for opening or closing the front spray hole and the rear spray hole.
2. A fire hose with a two-way water curtain function according to claim 1, characterized in that: The connecting assembly includes a tube body, one end of which is threaded to the gun body, and the other end of which is threaded to the nozzle. Both the gun body and the nozzle are connected to the tube body. The front spray hole is located on the tube body near the nozzle, and the rear spray hole is located on the tube body near the gun body.
3. A fire hose with a two-way water curtain function according to claim 2, characterized in that: The control mechanism includes a front ring body and a rear ring body disposed on the pipe body. When the front ring body blocks the front spray hole, the front spray hole is closed; when the front ring body is misaligned with the front spray hole, the front spray hole is opened. When the rear ring body blocks the rear spray hole, the rear spray hole is closed; when the rear ring body is misaligned with the rear spray hole, the rear spray hole is opened.
4. A fire hose with a two-way water curtain function according to claim 3, characterized in that: The front ring is threaded onto the tube body, and the rear ring is threaded onto the tube body. The tube body has an external thread, and the front and rear rings each have an internal thread that mates with the external thread on the tube body.
5. A fire hose with a two-way water curtain function according to claim 3, characterized in that: Both the front ring and the rear ring are slidably connected to the tube body. The control mechanism further includes a front rotating ring that controls the sliding of the front ring to open or close the front spray hole. The control mechanism also includes a rear rotating ring that controls the sliding of the rear ring to open or close the rear spray hole. The tube body is provided with a guide rib. Both the front and rear rings are provided with guide grooves that cooperate with the guide rib. The front rotating ring is provided with an internal thread that pushes the front ring to move. The front ring is provided with an external thread that cooperates with the internal thread on the front rotating ring. The rear rotating ring is provided with an internal thread that pushes the rear ring to move. The rear ring is provided with an external thread that cooperates with the internal thread on the rear rotating ring.
6. A fire hose with a two-way water curtain function according to claim 5, characterized in that: The external thread of the front ring body is opposite to the external thread of the rear ring body. The front rotating ring and the rear rotating ring are integral structures. By operating the front rotating ring or the rear rotating ring, the front ring body and the rear ring body can be moved in opposite directions at the same time to open or close the front spray hole and the rear spray hole simultaneously.
7. A fire hose with a two-way water curtain function according to claim 5, characterized in that: An operating ring is also provided on the pipe body, which is rotatably connected to the pipe body. A control ring is sleeved on the operating ring and is rotatably connected to the operating ring. The control ring is slidably connected to the operating ring along the axial direction. When the control ring slides to the first position, a portion of the front rotating ring extends into the control ring, and the rear rotating ring disengages from the control ring. Rotating the control ring drives the front ring body to move through the front rotating ring to open or close the front spray hole. When the control ring slides to the second position, a portion of the rear rotating ring extends into the control ring, and the front rotating ring disengages from the control ring. Rotating the control ring drives the rear ring body to move through the rear rotating ring to open or close the rear spray hole.
8. A fire hose with a two-way water curtain function according to claim 7, characterized in that: An elastic element is provided between the control ring and the rotating ring, and the elastic element pushes the control ring so that the control ring is located between the front rotating ring and the rear rotating ring.
9. A fire hose with a two-way water curtain function according to claim 8, characterized in that: The elastic element is sleeved on the operating ring, and the control ring is provided with an annular groove to accommodate the elastic element. One end of the elastic element is disposed on the operating ring, and the other end of the elastic element is disposed on the control ring.
10. A fire hose with a two-way water curtain function according to claim 9, characterized in that: The operating ring is provided with a protruding ridge, and the elastic element is a spring. One end of the spring contacts the protruding ridge, and the other end of the spring contacts the side wall of the ring groove.