Fire hose

Abstract

The utility model relates to the field of fire engineering discloses a fire fighting bellows, including inside snap ring, the outer wall sliding connection of inside snap ring has middle snap ring, the outer wall sliding connection of middle snap ring has outside snap ring, the inner wall sliding connection of middle snap ring has a plurality of movable ball, the outer wall of middle snap ring is equipped with spring, one side fixed connection of inside snap ring has the connecting cover, the outer wall fixed connection of connecting cover has pressure relief assembly. In the utility model, the limit nut is far and near in the long rod threaded section, controls the limit distance of pressure relief ring expansion, makes it when pressurizing, expansion is in the limit range, ensures the structural safety, through the depth of supporting screw rod, makes it limit the contraction limit of pressure relief ring, thereby control its contraction in its range, thereby protects the safety of structure, the use of double structure makes its location effect remarkable.

Description

Technical Field

[0001] This utility model relates to the field of fire protection engineering, and in particular to a fire-fighting corrugated pipe. Background Technology

[0002] With the current vigorous development of construction projects, fire-fighting corrugated pipes are widely used in building, construction, and fire protection scenarios. The internal corrugated design gives it a certain range of deformation redundancy, while the external limiting and shock-absorbing devices can effectively control the damage between the corrugated structure and the main pipe body when suddenly pressurized or depressurized. Quick-disassembly joints can quickly replace the damaged area of ​​the pipe when it is damaged, making it more usable. Thus, a fire-fighting corrugated pipe has emerged.

[0003] Modern fire-fighting corrugated pipes use rubber connections and metal wire connections for buffering between their dual connection ports. They utilize the extensibility of rubber as the basis for deformation and are fixed by surrounding threads, giving them stretchable and buffering characteristics. The metal wire connections give them bendable characteristics and provide a buffering effect during pressure increase and depressurization.

[0004] The widespread use of fire-fighting corrugated pipes in engineering construction and fire protection infrastructure has made them an indispensable component in fire protection construction. However, their extensive use has led to a significant increase in wear and tear. Therefore, the development of a fire-fighting corrugated pipe that can effectively buffer pressure and has a long service life has been put on the agenda. With the overall acceleration of construction, there is a great demand for a fire-fighting corrugated pipe that integrates long service life, buffer protection, and pressure relief and pressurization protection. To address these issues, a fire-fighting corrugated pipe is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a fire-fighting corrugated pipe, which aims to improve the problem that the pressure relief in the prior art cannot be effectively buffered.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fire-fighting corrugated pipe includes an internal retaining ring, a middle retaining ring slidably connected to the outer wall of the internal retaining ring, an outer retaining ring slidably connected to the outer wall of the middle retaining ring, a plurality of movable retaining balls slidably connected to the inner wall of the middle retaining ring, a spring sleeved on the outer wall of the middle retaining ring, a connecting cover fixedly connected to one side of the internal retaining ring, and a pressure relief component fixedly connected to the outer wall of the connecting cover.

[0008] As a further description of the above technical solution:

[0009] The pressure relief assembly includes multiple support blocks. The outer wall of the connecting cover is fixedly connected to one end of the multiple support blocks. A limit ring is fixedly connected to one side of each of the multiple support blocks. A shock-absorbing base is fixedly connected to one end of each of the multiple support blocks. A shock-absorbing plate is fixedly connected to one end of the shock-absorbing base. A knob post is fixedly connected to one end of the shock-absorbing plate. A threaded hole is opened on the inner wall of the knob post. A support screw is threadedly connected to the inner wall of the knob post. A top block is fixedly connected to one end of the support screw. A long threaded section is slidably connected to the other end of the top block. A limit nut is threadedly connected to the outer wall of the long threaded section.

[0010] As a further description of the above technical solution:

[0011] A pressure relief ring is fixedly connected to one side of the connecting cover, and the outer walls of the multiple movable retaining balls are slidably connected to the outer wall of the inner retaining ring.

[0012] As a further description of the above technical solution:

[0013] The outer walls of the plurality of movable retaining balls are slidably connected to the inner wall of the outer retaining ring, and one end of the outer retaining ring is in contact with one side of the inner retaining ring;

[0014] As a further description of the above technical solution:

[0015] A long rod connecting section is fixedly connected to one side of the threaded section of the long rod, and multiple limiting blocks are fixedly connected to the outer wall of the connecting cover;

[0016] As a further description of the above technical solution:

[0017] One end of the spring contacts one side of the external retaining ring, and the outer wall of the long rod connecting section is slidably connected to the inner wall of the limiting block;

[0018] As a further description of the above technical solution:

[0019] The outer wall of the damping pad is slidably connected to the inner wall of the limiting ring, and one end of the limiting nut is in contact with one end of the limiting block;

[0020] As a further description of the above technical solution:

[0021] The top block has a hexagonal cross-sectional shape, and the support block has a trapezoidal cross-sectional shape.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the distance of the limiting nut from the threaded section of the long rod controls the limit distance of the pressure relief ring's expansion, ensuring that the expansion is within the limited range when pressurized, thus ensuring structural safety. By adjusting the depth of the supporting screw, the contraction limit of the pressure relief ring is limited, thereby controlling its contraction within the range and protecting the structural safety. The use of the dual structure makes its limiting effect significant, increasing its lifespan while protecting the internal structure.

[0024] 2. In this utility model, the movable ball becomes the key component for limiting unlocking through the cooperation of the internal retaining ring and its outer double retaining groove. The position of the movable ball determines whether the internal retaining ring is locked. When the outer retaining ring is removed, the movable ball, which is no longer obstructed, can move freely within its interior. When the internal retaining ring moves, the ball moves outward, thereby unlocking. The movable ball, through the structural cooperation of the internal and outer retaining rings, enables the locking mechanism to work, thus solving the problem of disassembly. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a fire-fighting corrugated pipe proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the movable retaining ball of a fire-fighting corrugated pipe proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a shock-absorbing sheet for a fire-fighting corrugated pipe according to the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Legend:

[0030] 1. Internal retaining ring; 2. Middle retaining ring; 3. Movable retaining ball; 4. External retaining ring; 5. Spring; 6. Connecting cover; 7. Support block; 8. Limiting ring; 9. Knob post; 10. Support screw; 11. Top block; 12. Long rod threaded section; 13. Limiting nut; 14. Limiting block; 15. Long rod connecting section; 16. Vibration damping base; 17. Vibration damping pad; 18. Pressure relief ring. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1and Figure 2 The present invention provides an embodiment of a fire-fighting corrugated pipe, comprising an inner retaining ring 1, which serves as the inner basic structure of the corrugated pipe. A middle retaining ring 2 is slidably connected to the outer wall of the inner retaining ring 1. The middle retaining ring 2 is an intermediate transition component for locking and unlocking the inner retaining ring 1. An outer retaining ring 4 is slidably connected to the outer wall of the middle retaining ring 2. The outer retaining ring 4 can slide along the middle retaining ring 2 and is a key component for locking and unlocking. A plurality of movable retaining balls 3 are slidably connected to the inner wall of the middle retaining ring 2. When the movable retaining balls 3 slide within the middle retaining ring 2 and are restricted by the outer retaining ring 4, they can clamp the outer wall protrusion of the inner retaining ring 1 to achieve fixation of the three. When the restriction is released, they can move with the inner retaining ring 1 to achieve separation.

[0033] A spring 5 is fitted on the outer wall of the middle retaining ring 2. The spring 5 provides elastic thrust to the outer retaining ring 4, keeping it locked in the non-operating state and preventing unlocking due to vibration or external force. A connecting cover 6 is fixedly connected to one side of the inner retaining ring 1. The connecting cover 6 is used to connect the two ends of the bellows and provides an installation carrier for the pressure relief assembly, ensuring the coordinated work of the pressure relief structure and the bellows body. A pressure relief assembly is fixedly connected to the outer wall of the connecting cover 6. The pressure relief assembly can automatically adjust the expansion and contraction amplitude according to the pressure inside the pipe to alleviate instantaneous pressure shock and reduce pipe vibration. A pressure relief ring 18 is fixedly connected to one side of the connecting cover 6. The pressure relief ring 18 can expand and contract with the pressure inside the pipe, absorbing pressure fluctuations through deformation and achieving pressure buffering in conjunction with the pressure relief assembly.

[0034] The outer walls of multiple movable locking balls 3 are slidably connected to the outer wall of the inner locking ring 1, allowing the movable locking balls 3 to slide against the protrusions and grooves on the outer wall of the inner locking ring 1, ensuring tightness when locking and smoothness when unlocking. The outer walls of multiple movable locking balls 3 are also slidably connected to the inner wall of the outer locking ring 4. The contour of the inner wall of the outer locking ring 4 controls the extension and retraction range of the movable locking balls 3, realizing the locking and releasing of the inner locking ring 1. One end of the outer locking ring 4 is in contact with one side of the inner locking ring 1. In the locked state, the outer locking ring 4 and the inner locking ring 1 are in contact to form a limit, enhancing the stability of the overall structure.

[0035] Reference Figure 3 and Figure 4The pressure relief assembly includes multiple support blocks 7. The outer wall of the connecting cover 6 is fixedly connected to one end of the multiple support blocks 7. The support blocks 7 provide stable support for other components of the pressure relief assembly. Their trapezoidal structure can disperse the force and enhance the stability of the connection with the connecting cover 6. Each side of the multiple support blocks 7 is fixedly connected to a limit ring 8. The limit ring 8 ensures that it only extends and retracts in the horizontal direction to avoid displacement affecting the pressure relief effect. Each side of the multiple support blocks 7 is fixedly connected to a shock-absorbing base 16. The shock-absorbing base 16 is the intermediate node for pressure transmission connected to the support blocks 7, dispersing the vibration to the support blocks 7. One end of the shock-absorbing base 16 is fixedly connected to a shock-absorbing plate 17. The shock-absorbing plate 17 absorbs the vibration generated by the pressure impact through its own deformation, and works with other components to achieve shock absorption and buffering.

[0036] One end of the damping pad 17 is fixedly connected to a knob post 9. The inner wall of the knob post 9 has a threaded hole. The inner wall of the knob post 9 is threadedly connected to a support screw 10. The support screw 10 can adjust its relative position with the knob post 9 through the thread to change the pressure transmission stroke and adapt to different pressure scenarios. One end of the support screw 10 is fixedly connected to a top block 11. The other end of the top block 11 is slidably connected to a long rod threaded section 12. The long rod threaded section 12 is a key component for pressure transmission, transmitting the extension force of the pressure relief ring 18 to the top block 11. The outer wall of the long rod threaded section 12 is threadedly connected to a limit nut 13. The limit nut 13 can slide along the long rod threaded section 12. One side of the long rod threaded section 12 is fixedly connected to a long rod connecting section 15. The long rod connecting section 15 connects the long rod threaded section 12 and the pressure relief ring 18, transmitting the deformation force of the pressure relief ring 18 to the long rod threaded section 12 to achieve pressure transmission.

[0037] Multiple limiting blocks 14 are fixedly connected to the outer wall of the connecting cover 6. The limiting blocks 14 provide a sliding track for the long rod connecting section 15, ensuring its horizontal extension and contraction and preventing displacement that could cause the pressure relief assembly to jam. One end of the spring 5 contacts one side of the external retaining ring 4, allowing the elastic force of the spring 5 to directly act on the external retaining ring 4, pushing it to maintain the locked position and enhancing the reliability of the locking. The outer wall of the long rod connecting section 15 is slidably connected to the inner wall of the limiting blocks 14, ensuring that the long rod connecting section 15 moves in a straight line, ensuring stable pressure transmission direction, improving the working accuracy of the pressure relief assembly, and damping pad 17. The outer wall of the limiting ring 18 is slidably connected to the inner wall of the limiting ring 8. The sliding fit between the limiting ring 8 and the damping plate 17 not only provides guidance for the damping plate 17, but also limits its maximum deformation range, protecting the damping plate 17 from excessive stretching or compression. One end of the limiting nut 13 contacts one end of the limiting block 14. Through the contact between the limiting nut 13 and the limiting block 14, the maximum extension of the threaded section 12 of the long rod is determined, and the extension and contraction limit of the pressure relief ring 18 is precisely controlled. The cross-sectional shape of the top block 11 is hexagonal, and the cross-sectional shape of the support block 7 is trapezoidal. Its trapezoidal design can make the support more solid.

[0038] Working principle: When the fire-fighting corrugated pipe is installed and pressurized, the liquid will vibrate as it passes through the pipe at the moment of opening. At this time, the limit nut 13 is adjusted according to the flow rate to control the expansion and contraction of the pressure relief ring 18. When the pressure increases, the pressure relief ring 18 will expand outward, and the long rod connecting section 15 and the limit block 14 will cause it to expand and contract horizontally. When the pressure decreases, the pressure relief ring 18 will contract inward, and the connecting covers 6 at both ends will move inward. The pressure is transmitted through the threaded section 12 of the long rod, squeezing the support screw 10. The pressure is then transmitted from the support screw 10 to the damping plate 17 to achieve its damping purpose.

[0039] When disassembly is required, pull the outer retaining ring 4 to one end. At this time, the inner movable retaining ball 3 is no longer restricted and can move outward slightly. Then, pull the inner retaining ring 1 inward, and the movable retaining ball 3 will move outward. At this time, it can be disassembled. After installation, under the push of the spring 5, the outer retaining ring 4 will move inward. At this time, the inner protrusion will lock the movable retaining ball 3. Since there are also two protrusions on the outer wall of the inner retaining ring 1, the movable retaining ball 3 will be firmly locked between the inner retaining ring 1 and the middle retaining ring 2, thus achieving a locking effect.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire-fighting corrugated pipe, comprising an internal retaining ring (1), characterized in that: The outer wall of the inner retaining ring (1) is slidably connected to a middle retaining ring (2), the outer wall of the middle retaining ring (2) is slidably connected to an outer retaining ring (4), the inner wall of the middle retaining ring (2) is slidably connected to multiple movable retaining balls (3), the outer wall of the middle retaining ring (2) is sleeved with a spring (5), one side of the inner retaining ring (1) is fixedly connected to a connecting cover (6), and the outer wall of the connecting cover (6) is fixedly connected to a pressure relief assembly.

2. A fire-fighting corrugated pipe according to claim 1, characterized in that: The pressure relief assembly includes multiple support blocks (7). The outer wall of the connecting cover (6) is fixedly connected to one end of the multiple support blocks (7). A limit ring (8) is fixedly connected to one side of each of the multiple support blocks (7). A shock-absorbing base (16) is fixedly connected to one side of each of the multiple support blocks (7). A shock-absorbing plate (17) is fixedly connected to one end of the shock-absorbing base (16). A knob post (9) is fixedly connected to one end of the shock-absorbing plate (17). A threaded hole is opened on the inner wall of the knob post (9). A support screw (10) is threadedly connected to the inner wall of the knob post (9). A top block (11) is fixedly connected to one end of the support screw (10). A long rod threaded section (12) is slidably connected to the other end of the top block (11). A limit nut (13) is threadedly connected to the outer wall of the long rod threaded section (12).

3. A fire-fighting corrugated pipe according to claim 1, characterized in that: A pressure relief ring (18) is fixedly connected to one side of the connecting cover (6), and the outer walls of the plurality of movable retaining balls (3) are slidably connected to the outer wall of the inner retaining ring (1).

4. A fire-fighting corrugated pipe according to claim 1, characterized in that: The outer walls of the multiple movable ball (3) are slidably connected to the inner wall of the outer retaining ring (4), and one end of the outer retaining ring (4) is in contact with one side of the inner retaining ring (1).

5. A fire-fighting corrugated pipe according to claim 2, characterized in that: A long rod connecting section (15) is fixedly connected to one side of the long rod threaded section (12), and a plurality of limiting blocks (14) are fixedly connected to the outer wall of the connecting cover (6).

6. A fire-fighting corrugated pipe according to claim 5, characterized in that: One end of the spring (5) is in contact with one side of the external retaining ring (4), and the outer wall of the long rod connecting section (15) is slidably connected to the inner wall of the limiting block (14).

7. A fire-fighting corrugated pipe according to claim 6, characterized in that: The outer wall of the damping pad (17) is slidably connected to the inner wall of the limiting ring (8), and one end of the limiting nut (13) is in contact with one end of the limiting block (14).

8. A fire-fighting corrugated pipe according to claim 2, characterized in that: The top block (11) has a hexagonal cross-sectional shape, and the support block (7) has a trapezoidal cross-sectional shape.

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