Fire hose with self-stopping function

Abstract

The application belongs to the technical field of fire hose, and specifically discloses a fire hose with a self-water-stopping function, which comprises a water pipe and a water-stopping shell, one end of the water pipe is connected with the water-stopping shell through a flange connecting pipe connected with a port, an extension pipe is installed in communication at one end of the water-stopping shell away from the flange connecting pipe, an inner shell is installed in communication at one end inside the water-stopping shell, an extension hose is fixedly connected to one side of the inner shell, the extension hose is in communication with the inside of the water pipe, an elastic pipe fixing part is arranged at one end of the extension hose away from the water pipe, tracks are symmetrically and obliquely arranged on the inner walls of the water-stopping shell, the tracks on the same side are closer to each other at one end facing the inner shell, sliding blocks are slidingly installed in the tracks, and trapezoidal rods are jointly installed on the sides of the two groups of sliding blocks on the same side through the setting of turning parts. The application solves the problem that the conventional water hose cannot stop water and emergently cut off water in the middle, and does not need external power, and is reliable in operation and easy to maintain.

Description

Technical Field

[0001] This invention belongs to the technical field of fire hoses, and specifically discloses a fire hose with a self-sealing function. Background Technology

[0002] A standard fire hose is not a simple flexible hose, but a precision product made of multiple layers of materials, including an inner layer, a braided layer, and an outer layer.

[0003] The inner layer primarily serves a sealing and corrosion-preventing function; the braided layer mainly withstands internal water pressure; and the outer layer primarily protects the braided layer from scratches and abrasions. Traditional fire hoses rely on "end-of-line nozzle valves" or "joint shut-off valves" to stop water flow, which has significant drawbacks.

[0004] Firstly, the water hose itself has no water-stopping structure. If it is necessary to stop the water supply in the middle (such as to replace the water gun or adjust the water hose laying path), the remote fire pump or the end valve must be closed. The residual water in the water hose cannot be drained quickly, and the firefighters will be burdened by the excessive weight of the water when dragging it.

[0005] Secondly, the fire hoses lack an emergency water shut-off function when damaged, and can only be dealt with by shutting down the main pump, leading to the interruption of firefighting efforts.

[0006] Therefore, a fire hose with self-stopping function is proposed to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to solve the problems existing in the background art, and to propose a fire hose with a self-sealing function, including a water pipe and a water-stop shell. One end of the water pipe is connected to the water-stop shell through a flange connecting pipe. An extension pipe is connected to the end of the water-stop shell away from the flange connecting pipe. An inner shell is connected to the inside of the water-stop shell. An extension hose is fixedly connected to one side of the inner shell. The extension hose is connected to the inside of the water pipe. An elastic fixing pipe is provided at the end of the extension hose away from the water pipe. Tracks are symmetrically inclined on both sides of the inner wall of the water-stop shell. The two sets of tracks on the same side are close to each other at the end facing the inner shell. A slider is slidably installed inside each track. The two sets of sliders on the same side are connected to each other by a deflector and a trapezoidal rod is installed on the side where they are close to each other. A push-back component is provided on the outside of one end of the slide rod. A water-pushing component is provided between the two sets of sliders on the same end.

[0008] In the above technical solution, the elastic fixed pipe fitting further includes an elastic ring fixedly installed at the end of the extension hose away from the water pipe, and rebound columns are fixedly installed on the upper and lower sides of the outer side of the elastic ring, and the ends of the two rebound columns that are far apart from each other are fixedly connected to the inner wall of the water-stop shell.

[0009] In the above technical solution, the steering component further includes a U-shaped rod that rotatably passes through one side of the slider. The end of the U-shaped rod away from the slider is rotatably sleeved with a rotating shaft. A movable column is fixedly sleeved on the outside of the rotating shaft. The movable column is snapped into the inside of one end of the trapezoidal rod.

[0010] In the above technical solution, furthermore, sealing shells are installed on both sides of the inner side of the water-stop shell corresponding to the sliding rod, and one end of the sliding rod slides through the inside of the sealing shell.

[0011] In the above technical solution, the push-back component further includes a clamping plate fixedly installed on the outside of the end of the slide bar away from the trapezoidal rod, one end of the clamping plate extending to the outside of the sealing shell and having a positioning cylinder fixedly installed on its surface.

[0012] In the above technical solution, a screw is rotatably installed inside the positioning cylinder, a locking block is fixedly installed on one edge of the sealing shell, the end of the screw away from the positioning cylinder is threaded through the outside of the locking block, and a handwheel is installed on the end of the screw away from the locking block.

[0013] In the above technical solution, the water-pushing component further includes a cylindrical shell that is fixedly installed on the outside of the side of two sets of sliders at the same end that are close to each other. A water-stopping cylinder is rotatably clamped inside the two cylindrical shells. Arc-shaped water-pushing strips are installed at equal intervals along the circumferential direction on the outside of the water-stopping cylinder.

[0014] In the above technical solution, a fixing seat is fixedly installed on the upper end face of the water-stop shell, a retaining shaft is rotatably installed inside the fixing seat, and a handle is fitted on the outside of the retaining shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By operating the handwheel to drive the screw to rotate, the sliding rod and trapezoidal rod move laterally, and the inclined rail guides the slider to slide synchronously towards each other, forcing the water-stopping cylinders on both sides and their arc-shaped push strips to radially squeeze the extension hose, thereby achieving fast and reliable mechanical interception and water stop, solving the problem that traditional water hoses cannot actively stop water. By setting up elastic fixed pipe fittings composed of elastic rings and rebound columns, the extension hose can automatically restore its original shape and diameter after the water stop state is released, ensuring smooth water supply, while also playing a buffering and protective role.

[0017] 2. By providing a convenient installation method with a flange connection on one side of the waterstop shell, the versatility and maintenance convenience of the fire hose are enhanced. The water pipe is quickly connected to the waterstop shell through the flange connection pipe without the need for major modifications to the main structure of the hose. It can be adapted to existing fire hoses of different specifications, reducing equipment replacement costs. The core components inside the waterstop shell, such as the track, slider, and waterstop cylinder, are all modularly designed. When a component is worn or malfunctions, it can be disassembled and replaced individually without replacing the entire hose, reducing maintenance time and costs. At the same time, the handle on the upper surface of the waterstop shell makes it easy for firefighters to grip and position during operation, improving ease of use.

[0018] 3. The water-stopping function is achieved through a fully mechanical transmission and actuator, requiring no electricity or external power source. It has a simple structure, reliable operation, and is suitable for harsh working conditions such as high temperature, humidity, and impact at fire sites. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure connecting the water pipe, the water-stop shell, and the extension pipe of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure connecting the water pipe, waterstop shell, and extension pipe of the present invention from another angle.

[0021] Figure 3 This is a schematic diagram of the inner part of the sealing shell of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the track and the elastic fixed pipe component of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the push-back component and the push-water component of the present invention;

[0024] Figure 6 This is a schematic diagram of the structural connection of the water-pushing component of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the sealing shell, slide bar, clamping plate, and trapezoidal rod of the present invention.

[0026] In the diagram: 1. Water pipe; 2. Water-stop shell; 3. Handle; 4. Sealing shell; 5. Extension pipe; 6. Flange connection pipe; 7. Fixing seat; 8. Inner shell; 9. Elastic ring; 10. Water-stop cylinder; 11. Extension hose; 12. Track; 13. Rebound column; 14. Handwheel; 15. Screw; 16. Clamping plate; 17. Trapezoidal rod; 18. Clamping block; 19. Positioning cylinder; 20. Arc-shaped push bar; 21. Slider; 22. Movable column; 23. Slide rod; 24. U-shaped rod; 25. Rotating shaft; 26. Cylinder shell. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0029] like Figures 1-7 A fire hose with self-sealing function is shown, including a water pipe 1 and a water-stop shell 2. One end of the water pipe 1 is connected to the water-stop shell 2 through a flange connecting pipe 6. An extension pipe 5 is connected to the end of the water-stop shell 2 away from the flange connecting pipe 6. An inner shell 8 is connected to the inside of the water-stop shell 2. An extension hose 11 is fixedly connected to one side of the inner shell 8. The extension hose 11 is connected to the inside of the water pipe 1. An elastic fixed pipe fitting is provided at the end of the extension hose 11 away from the water pipe 1. Tracks 12 are symmetrically inclined on both sides of the inner wall of the water-stop shell 2. The two sets of tracks 12 on the same side are close to each other at the end facing the inner shell 8. A slider 21 is slidably installed inside each track 12. A trapezoidal rod 17 is installed on the side of the two sets of sliders 21 on the same side that are close to each other through a deflector. A sliding rod 23 is connected through the trapezoidal rod 17. A push-back component is provided on the outside of one end of the sliding rod 23. A water-pushing component is provided between the two sets of sliders 21 on the same end.

[0030] In this embodiment, the push-back component manually moves the slide bar 23 and trapezoidal bar 17 laterally. The trapezoidal bar 17, through the steering component, drives the sliders 21 on both sides to slide towards each other along the inclined track 12, thereby pushing the water-stopping cylinder 10 and the arc-shaped water-pushing strip 20 in the water-pushing component to radially compress the extension hose 11, achieving mechanical water stoppage. This structure enables the fire hose to actively interrupt water flow without relying on the end valve and fire pump control, effectively solving the problem of the hose being unable to stop water in emergencies. When the water stoppage is released, the push-back component moves the slide bar 23 back, the sliders 21 reset along the track 12, and the extension hose 11 resumes expansion under the action of the elastic fixed pipe component, allowing the water flow to resume.

[0031] The flexible fixed pipe fitting includes an elastic ring 9 fixedly installed at the end of the extension hose 11 away from the water pipe 1. Rebound columns 13 are fixedly installed on the upper and lower sides of the elastic ring 9, and the ends of the two rebound columns 13 that are far apart from each other are fixedly connected to the inner wall of the water stop shell 2.

[0032] In this embodiment, the elastic ring 9 and the rebound post 13 mainly provide stable support for the extension hose 11, maintain the stability of the internal flow channel when water is flowing, and avoid the extension hose 11 from shifting due to water flow impact.

[0033] Specifically, in the flexible pipe fitting, the elastic ring 9 is fixed to the end of the extension hose 11, and two rebound columns 13 are connected at one end to the elastic ring 9 and at the other end to the inner wall of the water-stop shell 2. When water is supplied, the rebound columns 13 are in a slightly stretched state, providing support for the extension hose 11 through the elastic ring 9 to prevent it from being excessively deformed due to water flow impact; when the water is stopped, the extension hose 11 is squeezed and contracted by the water-pushing component, and the elastic ring 9 moves down accordingly, the rebound columns 13 are compressed and store elastic potential energy; after the water is stopped, the rebound columns 13 release elastic potential energy, push the elastic ring 9 to reset, and then pull the extension hose 11 to restore its initial relaxed shape.

[0034] The steering component includes a U-shaped rod 24 that is rotatably inserted inside one side of the slider 21. The end of the U-shaped rod 24 away from the slider 21 is rotatably sleeved with a rotating shaft 25. A movable column 22 is fixedly sleeved on the outside of the rotating shaft 25. The movable column 22 is snapped into the inside of one end of the trapezoidal rod 17.

[0035] In this embodiment, by setting a movable column 22, a rotating shaft 25, and a U-shaped rod 24 at one end of the trapezoidal rod 17, the purpose is to solve the problem of the difference in direction between the linear motion of the trapezoidal rod 17 and the inclined sliding of the slider 21, so as to achieve smooth power transmission, avoid component jamming or damage due to conflict of force direction, ensure the smoothness of water-stopping operation, and disperse the instantaneous impact force in the transmission process through the rotational cooperation of the U-shaped rod 24 and the movable column 22, reduce the wear of the slider 21 and the trapezoidal rod 17, and extend the service life of the core transmission components.

[0036] Specifically, when the trapezoidal rod 17 moves laterally driven by the slide rod 23, it will generate a pushing force and a corresponding pulling force on the movable column 22. The movable column 22 rotates around the rotating shaft 25, while the U-shaped rod 24 rotates around the intersection point between it and the slider 21. This flexibly transforms the linear motion of the trapezoidal rod 17 into the sliding motion of the slider 21 along the inclined track 12. Furthermore, during the transmission process, the angle can be finely adjusted by rotating the components to counteract the deviation in the force direction caused by the inclination of the track 12, thus avoiding component jamming and damage due to conflict in the force direction and ensuring smooth operation during water-stopping.

[0037] Both sides of the inside of the water-stop shell 2 are fitted with sealing shells 4 corresponding to the sliding rods 23, and one end of the sliding rod 23 slides through the inside of the sealing shell 4.

[0038] In this embodiment, during the water supply and water stop process, the inside of the water stop shell 2 is always filled with water. The sealing shell 4 forms a sealing barrier on the sliding path of the sliding rod 23 by sealing the inner wall of the water stop shell 2 and tightly fitting the outer surface of the sliding rod 23, preventing the water inside the water stop shell 2 from seeping out from the gap between the sliding rod 23 and the water stop shell 2, while not affecting the lateral sliding of the sliding rod 23.

[0039] The push-back component includes a clamping plate 16 fixedly installed on the outside of the end of the slide bar 23 away from the trapezoidal bar 17. One end of the clamping plate 16 extends to the outside of the sealing shell 4 and a positioning cylinder 19 is fixedly installed on its surface. A screw 15 is rotatably installed inside the positioning cylinder 19. A locking block 18 is fixedly installed on the edge of one end of the sealing shell 4. The screw 15 is threaded through the outside of the locking block 18 at the end away from the positioning cylinder 19. A handwheel 14 is installed at the end of the screw 15 away from the locking block 18.

[0040] In this embodiment, when it is necessary to release the water stop, the operator turns the handwheel 14 to drive the screw 15 to rotate, which drives the clamping plate 16 to move away from the inner shell 8. The clamping plate 16 simultaneously pulls the slide rod 23 back inside the sealing shell 4. The slide rod 23 then drives the trapezoidal rod 17 and the slider 21 to reset, so that the water pusher is freed from the pressure on the extension hose 11. When the water is stopped, the clamping plate 16 and the slide rod 23 are driven to move towards one end of the inner shell 8, so that the water pusher can squeeze the extension hose 11.

[0041] The water-pushing component includes a cylindrical shell 26 that is fixedly installed on the outside of the side of two sets of sliders 21 at the same end that are close to each other. The two cylindrical shells 26 are rotatably fitted with a water-stopping cylinder 10 inside. The outside of the water-stopping cylinder 10 is equipped with arc-shaped water-pushing strips 20 at equal intervals along the circumferential direction.

[0042] In this embodiment, when the water is stopped, the slider 21 converges along the track 12, causing the cylinder shell 26 and the water-stopping cylinder 10 to move closer to the extension hose 11. The arc-shaped pusher strip 20 first contacts the outer surface of the extension hose 11. As the slider 21 continues to move, the squeezing force of the arc-shaped pusher strip 20 on the extension hose 11 gradually increases. Because the arc-shaped structure fits tightly with the surface of the hose, and multiple sets of pusher strips squeeze synchronously, the wall of the extension hose 11 can be uniformly contracted until the water flow channel is closed. When water is supplied, the slider 21 separates, the arc-shaped pusher strip 20 disengages from the extension hose 11, and the water-stopping cylinder 10 can rotate slightly with the water flow to reduce the resistance to the water flow.

[0043] A fixing seat 7 is fixedly installed on the upper end face of the waterstop shell 2. A retaining shaft is rotatably installed inside the fixing seat 7, and a handle 3 is fitted on the outside of the retaining shaft.

[0044] In this embodiment, the handle 3 is installed on the upper end of the waterstop shell 2 through the fixing seat 7, providing a gripping fulcrum for the operator, facilitating the application of torque during operation and stabilizing the entire waterstop shell 2, preventing slippage and deflection when the water hose pressure is high and the operating environment is complex, thus improving the convenience and safety of on-site use.

[0045] Working principle: When no water-stopping operation is performed, the fire hose is in normal water flow state. The water flows from the water pipe 1 through the flange connection pipe 6 into the water-stop shell 2, and then through the inner shell 8 and the extension hose 11 to the extension pipe 5, and finally to the fire extinguishing equipment. At this time, the extension hose 11 is in a naturally extended state, its diameter is complete, and the water flows smoothly without obstruction. The elastic ring 9 and the rebound column 13 in the elastic fixed pipe fitting maintain the stable position of the extension hose 11, preventing it from shifting or vibrating under the impact of water flow.

[0046] When water supply needs to be suspended (e.g., to replace a water gun, address a damaged hose, or adjust the laying path), firefighters can rotate handwheel 14 to rotate screw 15. Since screw 15 is threaded into locking block 18, during rotation, screw 15 pushes locking plate 16 and sliding rod 23 towards one end of the water-stop shell 2. Sliding rod 23 passes through trapezoidal rod 17 and moves it inwards. Trapezoidal rod 17 is connected to sliders 21 on both sides via a steering component including U-shaped rod 24, rotating shaft 25, and movable column 22. When trapezoidal rod 17 pushes slider 21 towards one end of the inner shell 8, the U-shaped rod... Rod 24 can rotate around the intersection point of slider 21, and movable column 22 can also adjust its angle around pivot 25. Because track 12 is inclined and narrows near the inner shell 8, the inward movement of trapezoidal rod 17 forces sliders 21 on both sides to slide along track 12 towards the center (i.e., towards the extension hose 11), causing the cylinder shell 26 and the water-stopping cylinder 10 installed therein to approach the extension hose 11 together. The water-stopping cylinder 10 and the outer arc-shaped pusher strip 20 gradually apply radial pressure to the extension hose 11, causing it to gradually flatten and eventually achieve complete closure, blocking the water flow and achieving active water stoppage of the fire hose. At this time, the operator can stop rotating handwheel 14. The thread self-locking characteristic of screw 15 (i.e., the static friction between the threads is greater than the pressure of the water flow on the extension hose 11) will keep slider 23, trapezoidal rod 17, slider 21, and pusher in their current positions, ensuring a stable water stoppage state. Even if there are fluctuations in the residual water pressure inside the hose, there will be no leakage.

[0047] When water supply needs to be restored, turn the handwheel 14 counterclockwise, and the screw 15 rotates in the opposite direction, causing the clamping plate 16 and slide bar 23 to retract outwards, and the trapezoidal rod 17 moves outwards accordingly. Under the elastic restoring force of the rebound column 13, the elastic ring 9 pushes the extension hose 11 back to its original shape, and at the same time, the slider 21 slides outwards along the track 12, the water stop cylinder 10 and the arc-shaped pusher strip 20 disengage from squeezing the extension hose 11, the water flow channel reopens, and normal water supply is restored.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A fire hose with self-sealing function, comprising a water pipe (1) and a water-stop shell (2), characterized in that: One end of the water pipe (1) is connected to the waterstop shell (2) via a flange connection pipe (6). An extension pipe (5) is installed at the end of the waterstop shell (2) away from the flange connection pipe (6). An inner shell (8) is installed inside the waterstop shell (2). An extension hose (11) is fixedly connected to one side of the inner shell (8). The extension hose (11) is connected to the inside of the water pipe (1). An elastic fixing fitting is provided at the end of the extension hose (11) away from the water pipe (1). The inner wall of the waterstop shell (2) The two sides are symmetrically inclined with rails (12). The two sets of rails (12) on the same side are close to each other at the end facing the inner shell (8). The rails (12) are slidably installed with sliders (21) inside each rail. The two sets of sliders (21) on the same side are connected to each other by a set of deflecting parts with trapezoidal rods (17). The trapezoidal rods (17) are connected to a sliding rod (23) through the inside. A push-back part is set on the outside of one end of the sliding rod (23). A water-pushing part is set between the two sets of sliders (21) on the same end. The elastic fixed pipe fitting includes an elastic ring (9) fixedly installed on the end of the extension hose (11) away from the water pipe (1). The elastic ring (9) is fixedly installed with rebound columns (13) on the upper and lower sides respectively, and the two rebound columns (13) are fixedly connected to the inner wall of the water stop shell (2) on the upper and lower sides respectively. The water-pushing component includes a cylindrical shell (26) that is fixedly installed on the outside of the two sets of sliders (21) at the same end, which are close to each other. The two cylindrical shells (26) are fitted with a water-stopping cylinder (10) that rotates together inside. The water-stopping cylinder (10) is equipped with arc-shaped water-pushing strips (20) at equal intervals along the circumferential direction on the outside of the circumferential direction.

2. A fire hose with self-sealing function according to claim 1, characterized in that: The steering component includes a U-shaped rod (24) that is rotatably inserted inside one side of the slider (21). The end of the U-shaped rod (24) away from the slider (21) is rotatably sleeved with a rotating shaft (25). A movable column (22) is fixedly sleeved on the outside of the rotating shaft (25). The movable column (22) is clamped inside one end of the trapezoidal rod (17).

3. A fire hose with self-sealing function according to claim 1, characterized in that: The sealing shell (2) has a sealing shell (4) installed on both sides of the inner side corresponding to the sliding rod (23), and one end of the sliding rod (23) slides through the inside of the sealing shell (4).

4. A fire hose with self-sealing function according to claim 3, characterized in that: The push-back component includes a clamping plate (16) fixedly installed on the outside of the end of the slide bar (23) away from the trapezoidal rod (17), one end of the clamping plate (16) extends to the outside of the sealing shell (4) and a positioning cylinder (19) is fixedly installed on its surface.

5. A fire hose with self-sealing function according to claim 4, characterized in that: A screw (15) is rotatably installed inside the positioning cylinder (19). A locking block (18) is fixedly installed on one edge of the sealing shell (4). The screw (15) is threaded through the outside of the locking block (18) at the end away from the positioning cylinder (19). A handwheel (14) is installed at the end of the screw (15) away from the locking block (18).

6. A fire hose with self-sealing function according to claim 1, characterized in that: A fixing seat (7) is fixedly installed on the upper end face of the water-stop shell (2). A retaining shaft is rotatably installed inside the fixing seat (7), and a handle (3) is fitted on the outside of the retaining shaft.

Images