Quick coupling and anti-falling device of fire hose

Abstract

The invention discloses a quick connector and an anti-falling device of a fire hose, and belongs to the field of fire fighting appliances. A quick coupling and anti-falling device of a fire hose comprises a water pipe connector and a spray head, a first perforated block is slidably connected to the interior of the water pipe connector, a first spring is fixedly connected between the rear surface of the first perforated block and the right side of the interior of the water pipe connector, and a first wedge-shaped sealing head is fixedly connected to the front end of the first perforated block; according to the device, the emergency response efficiency of fire-fighting operation can be greatly improved, meanwhile, the hidden danger of water leakage is effectively avoided, and smooth implementation of fire-fighting operation is guaranteed. In a fire-fighting emergency scene, time is life, traditional connector connection often needs tedious operation, and precious emergency time is consumed, however, quick alignment and clamping of the connector and the spray head are achieved by optimizing the structural design of the device.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting equipment, and more particularly to a quick connector and anti-detachment device for fire hoses. Background Technology

[0002] Firefighting operations, as a core component of emergency response, directly impact the safety of life and property through their response efficiency and operational safety. Fire hose couplings, as crucial components connecting hoses and nozzles, are a vital foundation for ensuring the smooth execution of firefighting operations. Currently, most fire hose couplings widely used in the firefighting field employ traditional threaded connections and clamp connections. While these achieve basic connection functions, they suffer from numerous unresolved technical defects in actual emergency scenarios, failing to meet the high demands of firefighting operations.

[0003] Traditional threaded connections require screwing and tightening for installation, a cumbersome process that necessitates the use of auxiliary tools to ensure a secure connection. In emergency firefighting scenarios, this time-consuming connection process can severely delay emergency response, causing the missed window of opportunity for fire suppression. Furthermore, these sealing structures are often single-seal designs, making them prone to leakage during high-pressure firefighting water delivery due to wear on the sealing surface or installation misalignment. This can lead to insufficient water pressure, significantly reducing firefighting efficiency and even causing secondary safety hazards due to leakage.

[0004] Furthermore, the existing connectors have poor anti-detachment performance. Under complex working conditions such as water flow impact and external force collision, the connectors and nozzles are prone to detachment, interrupting the continuity of fire fighting operations. Moreover, some connectors are complicated to disassemble, and the components are not easy to reposition. After long-term use, they are prone to structural loosening and damage, which not only increases the maintenance cost of fire fighting equipment, but also reduces the ease of operation and safety for operators.

[0005] To address the industry pain points of existing fire hose connectors, such as cumbersome connection, sealing failure, easy detachment, and inconvenient disassembly, it is urgent to develop a fire hose connector device that is highly efficient in connection, reliable in sealing, stable in preventing detachment, and adaptable to complex scenarios, in order to improve the emergency response capability of fire operations. Summary of the Invention

[0006] Purpose of the invention: The purpose of this invention is to provide a device that is convenient and efficient to connect, has excellent sealing performance and reliable anti-detachment effect, solving the problems of cumbersome connection, easy leakage and easy detachment of traditional fire hose connectors, and improving the emergency response efficiency and fire fighting safety of fire operations. Another purpose of this invention is to provide a device that is easy and labor-saving to disassemble, has strong structural stability, smooth reset of each component and can be reused, reducing the maintenance cost of fire equipment, improving the convenience of operation, and adapting to complex and emergency fire fighting scenarios.

[0007] Technical Solution: A quick connector and anti-detachment device for fire hoses, comprising a hose connector and a nozzle. The hose connector has a perforated block slidably connected inside. A spring is fixedly connected between the rear surface of the perforated block and the right side of the hose connector's interior. A wedge-shaped sealing head is fixedly connected to the front end of the perforated block. The nozzle's inner sidewall is symmetrically provided with roller grooves, each groove containing a rolling ball. A flexible retaining ring is fixedly connected to the outer sidewall of the hose connector. The nozzle has a perforated block slidably connected inside. A spring is fixedly connected between the front end of the perforated block and the front surface of the nozzle's interior. A wedge-shaped sealing head is fixedly connected to the rear end of the perforated block.

[0008] Furthermore, the water pipe connector can be snapped into the nozzle, and the flexible retaining ring can be snapped into the ball bearing.

[0009] Furthermore, the outer wall of the nozzle is provided with a sliding groove, and a limiting slide shell is slidably connected to the outer wall of the sliding groove. A limiting ring is fixedly connected to the inner wall of the limiting slide shell. The limiting ring is in contact with the outer wall of the ball. A spring is wound around the outer wall of the nozzle inside the limiting slide shell.

[0010] Furthermore, a support ring is fixedly connected to the outer wall of the water pipe connector, and a perforated retaining ring is fixedly connected inside the support ring. The perforated retaining ring can contact the right side of the outer wall of the water pipe connector. A sliding hole is provided on the inner wall of the support ring, and a sliding column is slidably connected to the sliding hole and the interior of the adjacent perforated retaining ring. An arc-shaped groove is provided at the front end of the sliding column.

[0011] Furthermore, the end of the sliding column, away from the arc-shaped groove, extends to the outer wall of the support ring and is fixedly connected to a stop ring. The outer wall of the sliding column is wound with four springs on both the stop ring and the outer wall of the support ring.

[0012] Furthermore, the outer side wall of the sliding column is provided with inclined grooves, and the right side of the support ring is provided with an extension groove. Each extension groove is slidably connected with a pressing rod, and the pressing rods extend into the interior of the adjacent inclined grooves. The right ends of multiple pressing rods are fixedly connected with an unlocking ring.

[0013] Furthermore, the inner sidewall of the limiting slide shell is provided with multiple fixing holes, and the slide pins can be engaged with the interior of the fixing holes.

[0014] Furthermore, both the first wedge-shaped sealing head and the second wedge-shaped sealing head have sealing rings fixedly connected to their outer side walls.

[0015] Furthermore, the outer side wall of the limiting sliding shell is provided with anti-slip texture.

[0016] Beneficial Effects: This device significantly improves the emergency response efficiency of firefighting operations while effectively preventing water leakage hazards and ensuring the smooth conduct of firefighting operations. In fire emergency scenarios, time is of the essence. Traditional connector connections often require cumbersome operations, wasting precious emergency time. However, this device, through optimized structural design, achieves rapid alignment and engagement between the connector and the nozzle. During connection, simply align the water pipe connector with the nozzle, and the soft retaining ring on the outer wall of the water pipe connector will automatically engage with the rolling ball in the groove on the inner wall of the nozzle, instantly completing the initial fixation without the need for additional tools. This greatly shortens the connection time, allowing firefighters to quickly engage in firefighting operations. Meanwhile, the device employs a double-sealing structure. Inside the water pipe joint, the perforated block one, under the elastic force of spring one, moves the wedge-shaped sealing head one towards the nozzle. Inside the nozzle, the perforated block two, under the elastic force of spring two, moves the wedge-shaped sealing head two to tightly fit with the wedge-shaped sealing head one, forming the first sealing barrier. Furthermore, sealing rings are fixedly connected to the outer walls of both wedge-shaped sealing heads one and two, further enhancing the sealing performance at the connection and effectively preventing leakage of fire water during high-pressure transmission, avoiding problems such as insufficient water pressure and reduced fire extinguishing efficiency due to leakage. Moreover, after connection, spring three pushes the limiting sliding shell to maintain its initial position. The limiting ring on its inner wall is in close contact with the rolling ball, effectively limiting the rolling ball and preventing it from detaching from the groove, further reinforcing connection stability and preventing the joint from falling off the nozzle due to water flow impact, external force collisions, etc., ensuring the continuity and safety of fire extinguishing operations.

[0017] This device is easy and labor-saving to disassemble, has strong structural stability, and all components reset smoothly. It is reusable, reducing the maintenance cost of fire-fighting equipment while improving operational safety and convenience. The ease of disassembly directly affects the efficiency of work completion when firefighting operations are completed or when hoses and nozzles need to be replaced. This device achieves rapid unlocking and disassembly through the cooperation design of the unlocking ring and sliding column. The operation process is simple and easy to understand, requiring no professional skills. During disassembly, simply press the unlocking ring to move the squeezing rod within the extension groove of the support ring. The squeezing rod presses against the inclined groove of the sliding column, causing the sliding column to slide outward and compress spring four, thus disengaging from the fixing hole on the inner wall of the limiting sliding shell, releasing the limiting sliding shell's restriction. Then, push the limiting sliding shell along the sliding groove, compressing spring three, causing the limiting ring and the ball to separate, easily pulling the water pipe connector away from the nozzle. The entire disassembly process is fast and efficient, significantly saving work completion time. In addition, the support ring and the perforated retaining ring enhance the structural strength of the water pipe joint, the cooperation between the sliding column and the sliding hole improves the stability of the component sliding, and the anti-slip texture on the outer wall of the limiting sliding shell increases the friction during operation, avoiding slippage caused by wet hands or excessive force, further improving the safety and convenience of operation, making it suitable for complex and emergency use scenarios in fire fighting operations, and providing strong support for firefighters' operations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the overall structure of the perforated block of the present invention; Figure 4 This is a schematic diagram of the overall structure of the support ring of the present invention; Figure 5 This is a schematic diagram of the overall structure of the sliding column of the present invention; Figure 6 This is a schematic diagram of the combination of the present invention.

[0019] In the diagram: 1. Water pipe connector; 2. Sprayer head; 3. Perforated block one; 4. Spring one; 5. Wedge-shaped sealing head one; 6. Groove; 7. Ball bearing; 8. Soft retaining ring; 9. Perforated block two; 10. Spring two; 11. Wedge-shaped sealing head two; 12. Sliding groove; 13. Limiting sliding shell; 14. Limiting ring; 15. Spring three; 16. Support ring; 17. Perforated retaining ring; 18. Sliding hole; 19. Sliding column; 20. Arc groove; 21. Abutment ring; 22. Spring four; 23. Inclined groove; 24. Extension groove; 25. Extrusion rod; 26. Unlocking ring; 27. Fixing hole; 28. Sealing ring; 29. ​​Anti-slip texture. Detailed Implementation

[0020] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example like Figure 1-6 As shown, a quick connector and anti-detachment device for a fire hose is provided, including a hose connector 1 and a nozzle 2. A perforated block 3 is slidably connected inside the hose connector 1. A spring 4 is fixedly connected between the rear surface of the perforated block 3 and the right side of the hose connector 1. A wedge-shaped sealing head 5 is fixedly connected to the front end of the perforated block 3. The inner sidewall of the nozzle 2 has symmetrically formed grooves 6, each groove 6 containing a rolling ball 7. A flexible retaining ring 8 is fixedly connected to the outer sidewall of the hose connector 1. A second perforated block 9 is slidably connected inside the nozzle 2. A spring 10 is fixedly connected between the front end of the nozzle 9 and the inner front surface of the nozzle 2. A wedge-shaped sealing head 11 is fixedly connected to the rear end of the perforated block 9. The water pipe connector 1 can be engaged with the nozzle 2. The soft retaining ring 8 can be engaged with the ball 7. A groove 12 is provided on the outer side wall of the nozzle 2. A limiting sliding shell 13 is slidably connected to the outer side wall of the groove 12. A limiting ring 14 is fixedly connected to the inner side wall of the limiting sliding shell 13. The limiting ring 14 is in contact with the outer side wall of the ball 7. A spring 15 is wound around the outer side wall of the nozzle 2 inside the limiting sliding shell 13. Before connection, the wedge-shaped sealing head 5 and wedge-shaped sealing head 11 inside the water pipe connector 1 and the nozzle 2 can block the two components, preventing water from flowing out. During connection, the water pipe connector 1 and the nozzle 2 are aligned and engaged. The soft retaining ring 8 on the outer wall of the water pipe connector 1 engages with the ball 7 inside the roller groove 6 on the inner wall of the nozzle 2, achieving initial fixation between the two. At the same time, the perforated block 3 inside the water pipe connector 1 slides forward under the elastic force of the spring 4, causing the wedge-shaped sealing head 5 at the front end of the perforated block 3 to move into the nozzle 2. The perforated block 9 inside the nozzle 2 slides backward under the elastic force of the spring 10, causing the wedge-shaped sealing head 11 at the rear end of the perforated block 9 to fit against the wedge-shaped sealing head 5, achieving a seal at the connection. At this time, the spring 15 wrapped around the outer wall of the nozzle 2 is in its natural state, pushing the limiting sliding shell 13 along the sliding groove 12. Maintaining its initial position, the limiting ring 14 on the inner wall of the limiting sliding shell 13 is in close contact with the outer wall of the rolling ball 7, limiting the rolling ball 7 and preventing it from coming out of the groove 6, further reinforcing the connection between the water pipe connector 1 and the nozzle 2 and preventing it from falling off. When disassembly is required, push the limiting sliding shell 13 to slide along the groove 12, compress the spring 3 15, and drive the limiting ring 14 to separate from the rolling ball 7, releasing the limitation on the rolling ball 7. Then pull the water pipe connector 1 to separate from the nozzle 2, the soft retaining ring 8 disengages from the rolling ball 7, the perforated block 3 compresses the spring 4 and slides backward under the pulling force, the wedge-shaped sealing head 1 5 separates from the wedge-shaped sealing head 2 11, the perforated block 2 9 slides forward and resets under the elastic force of the spring 2 10, and the limiting sliding shell 13 resets under the elastic force of the spring 3 15, completing the entire disassembly process, and all parts return to their initial state.

[0022] In this embodiment, a support ring 16 is fixedly connected to the outer wall of the water pipe connector 1. A perforated retaining ring 17 is fixedly connected inside the support ring 16. The perforated retaining ring 17 can contact the right side of the outer wall of the water pipe connector 1. A sliding hole 18 is provided on the inner wall of the support ring 16. A sliding column 19 is slidably connected inside both the sliding hole 18 and the adjacent perforated retaining ring 17. An arc-shaped groove 20 is provided at the front end of the sliding column 19. The end of the sliding column 19, away from the arc-shaped groove 20, extends to the outer wall of the support ring 16 and is fixedly connected to a stop ring 21. The outer wall of the sliding column 19 is surrounded by a... There is a spring 22, and the outer side wall of the sliding column 19 is provided with inclined grooves 23. The right side of the support ring 16 is provided with an extension groove 24. The inside of the extension groove 24 is slidably connected with a pressing rod 25. The pressing rod 25 extends into the inside of the adjacent inclined groove 23. The right ends of multiple pressing rods 25 are fixedly connected with an unlocking ring 26. The front of the inner side wall of the limiting sliding shell 13 is provided with multiple fixing holes 27. The sliding column 19 can be engaged with the inside of the fixing holes 27. The outer side walls of the wedge-shaped sealing head 15 and the wedge-shaped sealing head 21 are fixedly connected with sealing rings 28. The outer side wall of the limiting sliding shell 13 is provided with anti-slip textures 29. A support ring 16 is fixedly connected to the outer wall of the water pipe connector 1. A perforated retaining ring 17 is fixedly connected inside the support ring 16. The perforated retaining ring 17 can contact the right side of the outer wall of the water pipe connector 1. A sliding hole 18 is provided on the inner wall of the support ring 16. A sliding column 19 is slidably connected inside both the sliding hole 18 and the adjacent perforated retaining ring 17. An arc-shaped groove 20 is provided at the front end of the sliding column 19. The end of the sliding column 19, away from the arc-shaped groove 20, extends to the outer wall of the support ring 16 and is fixedly connected to a stop ring 21. A spring 22 is wound around the outer wall of the sliding column 19, located between the stop ring 21 and the outer wall of the support ring 16. An inclined groove 23 is provided on the outer wall of the sliding column 19. An extension groove 24 is formed on the right side of the support ring 16. Each extension groove 24 has a slidingly connected compression rod 25, which extends into the interior of an adjacent inclined groove 23. The right ends of multiple compression rods 25 are jointly fixedly connected to an unlocking ring 26. Multiple fixing holes 27 are formed on the front of the inner wall of the limiting sliding shell 13. Each sliding column 19 can be engaged with the interior of a fixing hole 27. Sealing rings 28 are fixedly connected to the outer walls of both the first wedge-shaped sealing head 5 and the second wedge-shaped sealing head 11. Anti-slip textures 29 are provided on the outer walls of the limiting sliding shell 13. When connected, the water pipe connector 1 and the nozzle 2 are aligned and engaged. The soft retaining ring 8 on the outer wall of the water pipe connector 1 engages with the groove 6 on the inner wall of the nozzle 2. The internal ball 7 engages, achieving initial fixation; the support ring 16 fixed to the outer wall of the water pipe connector 1 moves synchronously with the water pipe connector 1, and the perforated retaining ring 17 inside the support ring 16 contacts the right side of the outer wall of the water pipe connector 1. The sliding column 19 slides within the sliding hole 18 of the support ring 16 and the perforated retaining ring 17. The spring 4 22 is wrapped around the outside of the sliding column 19 and located between the abutment ring 21 and the support ring 16, in a natural state; at the same time, the perforated block 1 3 slides forward under the action of the spring 1 4, driving the wedge-shaped sealing head 1 5 to move, and the perforated block 2 9 slides backward under the action of the spring 2 10, driving the wedge-shaped sealing head 2 11 to fit with the wedge-shaped sealing head 1 5, and the sealing rings 28 on the outer walls of both... Enhanced sealing effect; Spring 3 15 pushes the limiting slide shell 13 to maintain its initial position along the slide groove 12, and its inner side wall fixing hole 27 engages with the slide column 19. The limiting ring 14 contacts the rolling ball 7 for limiting, and the anti-slip texture 29 on the outer side wall of the limiting slide shell 13 facilitates operation; During disassembly, press the unlocking ring 26 to drive the squeezing rod 25 to slide in the extension groove 24 of the support ring 16. The squeezing rod 25 squeezes the inclined groove 23 of the slide column 19, causing the slide column 19 to slide outward and compress the spring 4 22, disengaging from the fixing hole 27; then push the limiting slide shell 13 to compress the spring 3 15, and the limiting ring 14 disengages from the rolling ball 7. Pull the water pipe connector 1 to separate from the nozzle 2, and each component resets in sequence to complete the disassembly.

[0023] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A quick connector and anti-detachment device for a fire hose, comprising a hose connector (1) and a nozzle (2), characterized in that: The water pipe connector (1) is slidably connected to a perforated block (3). A spring (4) is fixedly connected between the rear surface of the perforated block (3) and the right side of the inside of the water pipe connector (1). A wedge-shaped sealing head (5) is fixedly connected to the front end of the perforated block (3). The inner sidewall of the nozzle (2) is symmetrically provided with roller grooves (6). Roller balls (7) are slidably connected inside the roller grooves (6). A soft retaining ring (8) is fixedly connected to the outer sidewall of the water pipe connector (1). A perforated block (9) is slidably connected inside the nozzle (2). A spring (10) is fixedly connected between the front end of the perforated block (9) and the front surface of the inside of the nozzle (2). A wedge-shaped sealing head (11) is fixedly connected to the rear end of the perforated block (9).

2. The quick connector and anti-detachment device for a fire hose according to claim 1, characterized in that: The water pipe connector (1) can be engaged with the nozzle (2), and the soft retaining ring (8) can be engaged with the ball (7).

3. The quick connector and anti-detachment device for a fire hose according to claim 1, characterized in that: The outer side wall of the nozzle (2) is provided with a sliding groove (12), and the outer side wall of the sliding groove (12) is slidably connected to a limiting sliding shell (13). The inner side wall of the limiting sliding shell (13) is fixedly connected to a limiting ring (14). The limiting ring (14) is in contact with the outer side wall of the ball (7). The outer side wall of the nozzle (2) is provided with a spring three (15) inside the limiting sliding shell (13).

4. The quick connector and anti-detachment device for a fire hose according to claim 1, characterized in that: A support ring (16) is fixedly connected to the outer wall of the water pipe connector (1). A perforated retaining ring (17) is fixedly connected inside the support ring (16). The perforated retaining ring (17) can contact the right side of the outer wall of the water pipe connector (1). A sliding hole (18) is provided on the inner wall of the support ring (16). A sliding column (19) is slidably connected to the sliding hole (18) and the adjacent perforated retaining ring (17). An arc groove (20) is provided at the front end of the sliding column (19).

5. A quick connector and anti-detachment device for a fire hose according to claim 4, characterized in that: The end of the sliding column (19) away from the arc groove (20) extends to the outer wall of the support ring (16) and is fixedly connected to the abutment ring (21). The outer wall of the sliding column (19) is provided with spring four (22) on both the abutment ring (21) and the outer wall of the support ring (16).

6. A quick connector and anti-detachment device for a fire hose according to claim 5, characterized in that: The outer side wall of the sliding column (19) is provided with inclined grooves (23), and the right side of the support ring (16) is provided with an extension groove (24). The inside of the extension groove (24) is slidably connected with a pressing rod (25). The pressing rod (25) extends into the inside of the adjacent inclined groove (23). The right ends of multiple pressing rods (25) are fixedly connected with an unlocking ring (26).

7. A quick connector and anti-detachment device for a fire hose according to claim 3, characterized in that: The inner sidewall of the limiting sliding shell (13) is provided with multiple fixing holes (27), and the sliding column (19) can be engaged with the inside of the fixing hole (27).

8. The quick connector and anti-detachment device for a fire hose according to claim 1, characterized in that: Both the outer walls of the first wedge-shaped sealing head (5) and the second wedge-shaped sealing head (11) are fixedly connected with sealing rings (28).

9. A quick connector and anti-detachment device for a fire hose according to claim 3, characterized in that: The outer side wall of the limiting sliding shell (13) is provided with anti-slip texture (29).

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