A coupling for fire hose

Abstract

The application relates to the technical field of firefighting, in particular to a connector for a firefighting pipeline, which comprises a sleeve pipe and a connecting pipe section, a rubber ring is embedded on the inner side of the top end of the sleeve pipe, the inner side of the sleeve pipe is threadedly connected with the connecting pipe section, and the top end of the connecting pipe section supports the position of the rubber ring; the top end of the sleeve pipe is provided with a pushing ring, and one end of the pushing ring is provided with a hanging ear matched with the pushing ring. The connecting pipe section is threadedly connected with the inner side of the sleeve ring, the vertical position of the rubber ring is adjusted by the thread of the connecting pipe section, so that better sealing effect can be obtained when the two connectors are docked, and the slight aging of the rubber ring can be well adapted.

Description

Technical Field

[0001] This application relates to the technical field of fire protection, and in particular to a connector for fire protection pipes. Background Technology

[0002] In modern fire protection systems, the reliable connection between fire pipes and fire hoses is a crucial element in ensuring the smooth operation of fire fighting and rescue work. According to data from a fire equipment maintenance survey, thousands of water leakage accidents occur annually nationwide due to the failure of seals at fire pipe joints. This not only wastes a large amount of water resources but also seriously affects the water supply stability and fire fighting efficiency of the fire protection system during emergencies.

[0003] Currently, fire hoses and pipes are generally connected using detachable joints, relying primarily on rubber rings for sealing. While rubber rings possess a certain degree of elastic sealing performance, they are significantly affected by environmental factors and usage frequency. In high-temperature, humid, or corrosive environments, rubber rings age rapidly, and even when idle, their physical properties gradually deteriorate over time. Related experiments show that ordinary rubber sealing rings exposed to outdoor environments for 1-2 years experience an aging rate of 40%-60%, resulting in a significant decrease in sealing performance. Once leakage occurs at the joint, it may initially manifest as slow, undetectable seepage, but over time it can lead to insufficient fire water pressure. This is particularly problematic in high-rise or large building fire protection systems, where the water pressure cannot meet the needs of end-point fire suppression equipment, directly threatening the safety of people and property. Furthermore, frequent replacement of aging rubber rings not only increases maintenance costs and manpower but also means that in emergencies, the aging sealing rings may completely fail, rendering the fire protection system ineffective. Therefore, to address these issues, this application provides a connector for fire hoses. Utility Model Content

[0004] To address the aforementioned problems, this application provides a connector for fire protection pipelines.

[0005] This application provides a connector for fire protection pipelines, including a sleeve and a connecting pipe section. A rubber ring is embedded on the inner side of the top end of the sleeve, and the inner side of the sleeve and the connecting pipe section are threaded together. The top end of the connecting pipe section supports the position of the rubber ring.

[0006] The top end of the sleeve is provided with a push ring, and one end of the push ring is provided with a lug that cooperates with it.

[0007] By connecting the pipe section to the inner thread of the collar, the vertical position of the rubber ring can be adjusted by using the threaded advancement of the pipe section. This allows for a better sealing effect when the two joints are mated, and also helps to adapt well to the slight aging of the rubber ring.

[0008] Preferably, the inner side of the sleeve is provided with an internal thread.

[0009] Preferably, the top end of the connecting pipe section is provided with an external thread, and the external thread and internal thread are provided in conjunction, forming a platform between the top end of the connecting pipe section and the sleeve for placing a rubber ring.

[0010] Preferably, a sealing ring that fits against the inner wall of the sleeve is provided below the external thread position of the connecting pipe section.

[0011] Preferably, the bottom end of the sleeve is provided with two bolts perpendicular to its axis, and the ends of the bolts abut against the outer wall of the sealing ring.

[0012] Preferably, the connecting pipe section is further provided with a hexagonal segment.

[0013] Preferably, the front view of the push ring is inclined, the end near the ear is higher than the other end, and the end with the smaller thickness of the push ring is fitted with the ear with a gap, the gap being larger than the width of the ear.

[0014] Preferably, the inner side of the loop has a groove that cooperates with the push ring.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] By connecting the pipe section to the inner thread of the collar, the vertical position of the rubber ring can be adjusted by using the threaded advancement of the pipe section. This allows for a better sealing effect when the two joints are mated, and also helps to adapt well to the slight aging of the rubber ring. Attached Figure Description

[0017] Figure 1 It is the isometric drawing in Embodiment 1 of this application;

[0018] Figure 2 This is the bottom-view isometric drawing from Embodiment 1 of this application;

[0019] Figure 3 This is an exploded view of Embodiment 1 of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Sleeve; 11. Internal thread; 2. Connecting pipe section; 21. Hexagonal section; 22. External thread; 23. Sealing ring; 3. Push ring; 4. Lug; 41. Thread groove; 5. Bolt; 6. Rubber ring. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 - Figure 3 This application will be described in further detail.

[0022] Example 1:

[0023] A connector for fire protection pipes, see reference Figure 1 - Figure 3A rubber ring 6 is embedded on the inner side of the top end of the sleeve 1. The inner side of the sleeve 1 and the connecting pipe section 2 are threaded together. The top end of the connecting pipe section 2 supports the position of the rubber ring 6. An internal thread 11 is provided on the inner side of the sleeve 1. An external thread 22 is provided on the top end of the connecting pipe section 2. The external thread 22 and the internal thread 11 are matched and configured to form a platform for placing the rubber ring 6 between the top end of the connecting pipe section 2 and the sleeve 1.

[0024] A sealing ring 23 is installed below the external thread 22 of the connecting pipe section 2, which fits against the inner wall of the sleeve 1. The overall pitch of the external thread 22 is greater than the pitch of the internal thread 11. The purpose is to avoid contact between the sealing ring 23 and the internal thread 11 during the adjustment process, which would lead to dynamic seal failure and thus ensure that the device has good sealing performance.

[0025] Two bolts 5 are installed at the bottom end of the sleeve 1 perpendicular to its axis. The ends of the bolts 5 abut against the outer wall of the sealing ring 23. The function of the bolts 5 is to ensure the stability of the connection between the sleeve 1 and the connecting pipe section 2 by using the friction between their ends and the connecting pipe section 2 after the position adjustment between the sleeve 1 and the connecting pipe section 2 is completed, thereby ensuring that the position of the rubber ring 6 is also relatively stable.

[0026] The connecting pipe section 2 is also provided with a hexagonal section 21, which is used for the operation of the external wrench and at the same time limits the upward movement range of the connecting pipe section 2 to avoid over-adjustment.

[0027] A push ring 3 is provided at the top of the sleeve 1, and a lug 4 is provided at one end of the push ring 3 to cooperate with it.

[0028] The front view of the push ring 3 is inclined, and the end near the lug 4 is higher than the other end. The end of the push ring 3 with less thickness is fitted with the lug 4 with a gap greater than the width of the lug 4. The inner side of the lug 4 is provided with a groove 41 that mates with the push ring 3.

[0029] The attached diagram shows one half of the connector. The other half adopts the same structure as in this application. When the two are connected: the lug 4 of the other connector is inserted through the gap between the push ring 3 and the lug 4. Then, keeping the lower connector in place, the upper connector rotates counterclockwise. The groove 41 of the lug 4 continuously changes its contact position with the push ring 3, thereby increasing the pressure on the rubber ring 6 between the two connectors. When it can no longer rotate, it stops. If the position does not reach the side of the lug 4, the position is ideal. If it is close to the lug 4, the ideal position may not have been reached. At this time, the bolt 5 of one of the connectors is loosened, and the hexagonal segment 21 is rotated by a wrench to achieve axial displacement of the connecting pipe segment 2, further changing the position of the rubber ring 6, increasing the contact tightness of the rubber ring 6 between the two connectors, thereby improving the sealing effect.

[0030] The foregoing description, with reference to preferred embodiments, illustrates an exemplary implementation of a connector for fire-fighting pipelines provided by this disclosure. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, the protection scope of which is determined by the appended claims.

Claims

1. A connector for fire-fighting pipelines, comprising a sleeve (1) and a connecting pipe section (2), wherein a rubber ring (6) is embedded on the inner side of the top end of the sleeve (1), characterized in that: The inner side of the sleeve (1) and the connecting pipe section (2) are threaded together, and the top end of the connecting pipe section (2) supports the position of the rubber ring (6). The top end of the sleeve (1) is provided with a push ring (3), and one end of the push ring (3) is provided with a lug (4) that cooperates with it.

2. The connector according to claim 1, characterized in that: The inner side of the sleeve (1) is provided with an internal thread (11).

3. The connector according to claim 2, characterized in that: The top end of the connecting pipe section (2) is provided with an external thread (22), and the external thread (22) and the internal thread (11) are provided in conjunction, forming a platform between the top end of the connecting pipe section (2) and the sleeve (1) for placing the rubber ring (6).

4. The connector according to claim 3, characterized in that: A sealing ring (23) that fits against the inner wall of the sleeve (1) is provided below the external thread (22) of the connecting pipe section (2).

5. The connector according to claim 4, characterized in that: The bottom end of the sleeve (1) is provided with two bolts (5) perpendicular to its axis, and the ends of the bolts (5) abut against the outer wall of the sealing ring (23).

6. The connector according to claim 5, characterized in that: The connecting section (2) is also provided with a hexagonal section (21).

7. The connector according to claim 1, characterized in that: The front view of the push ring (3) is inclined, and the height of the end near the ear (4) is greater than that of the other end. The end of the push ring (3) with less thickness and the ear (4) are fitted with a gap, and the gap is greater than the width of the ear (4).

8. The connector according to claim 7, characterized in that: The inner side of the hanging ear (4) is provided with a buckle groove (41) that cooperates with the push ring (3).

Images