Fire-fighting pipeline joint structure

Abstract

The utility model relates to the technical field of pipeline connection, in particular to a fire-fighting pipeline joint structure. The fire-fighting pipeline joint structure comprises a joint pipe and a quick joint pipe head which is used for being quickly butted with the joint pipe. According to the fire-fighting pipeline joint structure, quick connection of the joint pipe and the quick connection pipe head can be achieved by rotating the threaded sleeve, the pipeline body does not need to be rotated for multiple times, the installation time is greatly shortened, and the fire-fighting pipeline joint structure is particularly suitable for emergency repair scenes; when the joint pipe is in threaded connection with the quick-connection pipe head, the abutting pipe on the arc-shaped abutting head abuts against the sealing ball and pushes the sealing ball towards the inner edge part, and therefore the joint pipe and the quick-connection pipe head are communicated with each other, and when the joint pipe and the quick-connection pipe head are in threaded connection and fail to be connected due to vibration, the abutting pipe does not abut against the sealing ball gradually. Therefore, the sealing ball can seal the joint pipe immediately under the action of the elastic force of the spring, and waste of water is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a fire protection pipeline joint structure. Background Art

[0002] Firefighting pipes are used to connect firefighting equipment and devices, and to transport firefighting water, gas, or other media. Firefighting pipe systems play a vital role in buildings, and the reliability and sealing of their connections are directly related to the normal operation of firefighting systems. Currently, common firefighting pipe joints mostly use flange connections, threaded connections, or clamp connections. Threaded connections are prone to loosening under vibration, leading to water leaks. Furthermore, existing joints often fail to quickly self-seal when disconnected, resulting in water waste.

[0003] Therefore, it is necessary to provide a new fire protection pipe joint structure to solve the above-mentioned technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a fire protection pipe joint structure.

[0005] The fire protection pipe joint structure provided by the utility model comprises: a joint pipe and a quick-connect joint head for quickly connecting with the joint pipe;

[0006] An arc-shaped cavity is provided in the joint pipe, and an inner edge portion is provided on the side of the arc-shaped cavity away from the pipe opening. A sealing component is provided in the arc-shaped cavity, and the sealing component includes a sealing ball, which is elastically installed in the arc-shaped cavity and seals the cavity opening of the arc-shaped cavity;

[0007] The joint pipe is provided with a threaded sleeve for rotational connection;

[0008] An arcuate abutting head is provided in the quick-connect joint, and an abutting tube is fixedly installed on the arcuate abutting head. The abutting tube passes through the arcuate abutting head, and a waist-shaped cavity is provided in an annular distribution on the tube body of the abutting tube near the pipe opening.

[0009] Preferably, the blocking component further comprises a spring, one end of the spring is fixedly connected to the inner edge portion, and the other end of the spring is fixedly connected to the spherical surface of the sealing ball facing away from the cavity opening.

[0010] Preferably, an arcuate surface is provided at the butt joint of the joint pipe, and the arcuate surface matches the arcuate abutting head.

[0011] Preferably, the fixing sleeve on the arc-shaped surface is provided with a rubber sleeve.

[0012] Preferably, the outer tube surface of the quick-connect fitting is provided with an external threaded portion that matches the threaded sleeve.

[0013] Preferably, the diameter of the sealing ball is smaller than the inner diameter of the arc-shaped cavity.

[0014] Compared with the related art, the fire protection pipe joint structure provided by the present invention has the following beneficial effects:

[0015] The utility model can realize the quick connection of the two by rotating the threaded sleeve, without rotating the pipe body multiple times, greatly shortening the installation time, and is particularly suitable for emergency repair scenarios. During the docking process of the joint pipe and the quick-connect head, the abutting tube on the arc-shaped abutting head is able to abut the sealing ball and push the sealing ball in the inner direction, so that the joint pipe and the quick-connect head are connected to each other. When the threaded connection between the joint pipe and the quick-connect head fails due to vibration (or the joint pipe and the quick-connect head are disassembled), the abutting tube gradually no longer abuts the sealing ball. Therefore, the sealing ball can immediately seal the joint pipe under the elastic force of the spring, avoiding waste of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a preferred embodiment of the fire protection pipe joint structure provided by the utility model;

[0017] Figure 2 for Figure 1 The cross-sectional structural diagram shown;

[0018] Figure 3 for Figure 3 The schematic diagram of the plane structure shown;

[0019] Figure 4 for Figure 2 A schematic cross-sectional view of the joint pipe shown;

[0020] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure of the quick-connect fitting shown.

[0021] Numbers in the figure: 1. Connecting pipe; 1a. Arc-shaped cavity; 11. Inner edge; 12. Arc-shaped surface; 2. Quick-connect fitting; 21. Arc-shaped abutting head; 22. External threaded portion; 3. Sealing component; 31. Sealing ball; 32. Spring; 4. Threaded sleeve; 5. Abutting pipe; 5a. Waist-shaped cavity; 6. Rubber sleeve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0024] See also Figures 1 to 5 An embodiment of the present invention provides a fire protection pipe joint structure, which includes a joint pipe 1 and a quick-connect joint head 2 for quickly docking with the joint pipe 1.

[0025] In the embodiments of the present invention, please refer to Figures 1 to 5 , an arc-shaped cavity 1a is provided in the joint pipe 1, and an inner edge portion 11 is provided on the side of the arc-shaped cavity 1a away from the pipe opening, and a threaded sleeve 4 is provided on the joint pipe 1 for rotational connection, a sealing component 3 is provided in the arc-shaped cavity 1a, and the sealing component 3 includes a sealing ball 31, the ball diameter of the sealing ball 31 is smaller than the inner diameter of the arc-shaped cavity 1a, the sealing ball 31 is elastically installed in the arc-shaped cavity 1a and seals the cavity opening of the arc-shaped cavity 1a, the sealing component 3 also includes a spring 32, one end of the spring 32 is fixedly connected to the inner edge portion 11, and the other end of the spring 32 is fixedly connected to the spherical surface of the sealing ball 31 away from the cavity opening;

[0026] The outer tube surface of the quick connector 2 is provided with an external threaded portion 22 that matches the threaded sleeve 4, and an arc-shaped abutting head 21 is provided inside the quick connector 2, and an abutting tube 5 is fixedly installed on the arc-shaped abutting head 21. The abutting tube 5 passes through the arc-shaped abutting head 21, and the tube body of the abutting tube 5 near the pipe mouth is provided with a ring-shaped waist cavity 5a.

[0027] It is worth noting that the end of the joint pipe 1 away from the arc cavity 1a is welded to the fire pipe, and the end of the quick connector 2 away from the external threaded portion 22 is welded to another fire pipe (or valve, sprinkler, etc.).

[0028] It should be noted that: in the initial state, due to the elastic force of the spring 32 on the sealing ball 31, the sealing ball 31 is able to abut against the cavity opening of the arc-shaped cavity 1a to seal the cavity opening;

[0029] When the joint pipe 1 and the quick-connect pipe head 2 are connected, the external threaded portion 22 on the quick-connect pipe head 2 is abutted against the threaded sleeve 4, and then the threaded sleeve 4 is rotated (or the threaded sleeve 4 is held with one hand and the quick-connect pipe head 2 is rotated with the other hand) to drive the quick-connect pipe head 2 and the threaded sleeve 4 to be threadedly connected. Rotating the threaded sleeve 4 can achieve a quick connection between the two, without the need to rotate the pipe body multiple times, which greatly shortens the installation time and is particularly suitable for emergency repair scenarios. During the connection between the joint pipe 1 and the quick-connect pipe head 2, the abutting pipe 5 on the arc-shaped abutting head 21 is able to abut against the sealing ball 31 and push the sealing ball 31 toward the inner edge 11 (the spring 32 is compressed at this time), so that the joint pipe 1 and the quick-connect pipe head 2 are connected to each other;

[0030] When the threaded connection between the joint pipe 1 and the quick connector 2 fails due to vibration (or the joint pipe 1 and the quick connector 2 are disassembled), the abutting pipe 5 gradually stops abutting the sealing ball 31. Therefore, the sealing ball 31 can immediately seal the joint pipe 1 under the elastic force of the spring 32, avoiding waste of water.

[0031] Furthermore, an arcuate surface 12 is provided at the butt joint of the joint pipe 1, and the arcuate surface 12 matches the arcuate mating head 21, and a rubber sleeve 6 is fixed on the arcuate surface 12. The provided rubber sleeve 6 can effectively improve the sealing between the arcuate surface 12 and the arcuate mating head 21.

[0032] In addition, the sealing ball 31 and the opening of the arc-shaped cavity 1a are treated with wear-resistant materials (such as surface sprayed ceramic coating) to reduce surface wear of both. The spring 32 is made of stainless steel or titanium alloy spring to improve corrosion resistance. At the same time, a polytetrafluoroethylene (PTFE) coating is applied on the surface of the spring 32 to enhance rust resistance.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fire protection pipe joint structure, comprising: a joint pipe (1), and A quick-connect fitting (2) for quick connection with the joint pipe (1); Its characteristics are: An arc-shaped cavity (1a) is provided in the joint pipe (1), and an inner edge portion (11) is provided on a side of the arc-shaped cavity (1a) facing away from the pipe opening. A sealing component (3) is provided in the arc-shaped cavity (1a), and the sealing component (3) includes a sealing ball (31). The sealing ball (31) is elastically installed in the arc-shaped cavity (1a) and seals the cavity opening of the arc-shaped cavity (1a). The joint pipe (1) is provided with a threaded sleeve (4) for rotational connection; An arc-shaped abutting head (21) is provided in the quick-connect joint (2), and an abutting tube (5) is fixedly mounted on the arc-shaped abutting head (21). The abutting tube (5) passes through the arc-shaped abutting head (21), and a waist-shaped cavity (5a) distributed in an annular manner is provided on the tube body of the abutting tube (5) near the tube opening.

2. The fire protection pipe joint structure according to claim 1, characterized in that: The blocking component (3) further comprises a spring (32), one end of the spring (32) being fixedly connected to the inner edge portion (11), and the other end of the spring (32) being fixedly connected to the spherical surface of the sealing ball (31) facing away from the cavity opening.

3. The fire protection pipe joint structure according to claim 2, characterized in that: An arcuate surface (12) is provided at the butt joint of the joint pipe (1), and the arcuate surface (12) matches the arcuate abutting head (21).

4. The fire protection pipe joint structure according to claim 3, characterized in that: The fixed sleeve on the arc-shaped curved surface (12) is provided with a rubber sleeve (6).

5. The fire protection pipe joint structure according to claim 1, characterized in that: The outer tube surface of the quick-connect fitting (2) is provided with an external threaded portion (22) that matches the threaded sleeve (4).

6. The fire protection pipe joint structure according to claim 1, characterized in that: The diameter of the sealing ball (31) is smaller than the inner diameter of the arc-shaped cavity (1a).

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