A fire-fighting pipe connector with a quick-connect structure

Abstract

This utility model discloses a fire-fighting pipe connector with a quick-connect structure, belonging to the technical field of fire-fighting pipe connectors. It includes a first connecting sleeve and a second connecting sleeve. The first connecting sleeve has multiple mounting holes extending radially through it, with ball bearings slidably embedded in each hole. A spring connecting seat is fixedly connected to the outer wall of the first connecting sleeve, and a compression spring is fixedly connected to the spring connecting seat. A sliding sleeve is fixedly connected to the end of the compression spring away from the spring connecting seat, and the compression spring and sliding sleeve are sleeved on the outside of the first connecting sleeve. This utility model utilizes a ball bearing engagement + sliding sleeve linkage structure. When the second connecting sleeve is inserted into the first connecting sleeve, the ball bearings automatically embed into the slots for initial fixation. Combined with the quick-locking action of the deformation buckle and the positioning protrusion of the sliding sleeve, the entire process requires no tools. Separation only requires pressing the deformation buckle and sliding the sliding sleeve; these two steps allow the second connecting sleeve to be removed, significantly shortening operation time in emergency situations where pipe layout adjustments are necessary.

Description

Technical Field

[0001] This utility model belongs to the technical field of fire protection pipe connectors, specifically a fire protection pipe connector with a quick-connect structure. Background Technology

[0002] Fire pipe connectors are used to quickly connect the inlet and outlet pipes in a fire protection system. Through a mechanical structure, they enable rapid connection and disconnection of pipes, ensuring a leak-proof seal at the connection point and preventing detachment under high-pressure water flow. They are suitable for rapid deployment in emergency fire situations, improving the efficiency of fire pipe installation and adjustment, and ensuring uninterrupted water supply.

[0003] However, existing fire pipe connectors have many shortcomings: they require tools to tighten during connection, which is cumbersome and makes it difficult to quickly connect in emergencies, delaying the opportunity to extinguish fires; their simple sealing structure often leads to leakage due to vibration or pressure fluctuations, reducing water supply efficiency; and they lack anti-detachment design, making them prone to accidental separation due to external forces or pipe shaking, posing safety hazards. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a fire pipe connector with a quick-connect structure, which solves the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fire-fighting pipe connector with a quick-connect structure, comprising a first connecting sleeve and a second connecting sleeve; the first connecting sleeve has multiple mounting holes extending radially through it, and ball bearings are slidably embedded in the mounting holes; a spring connecting seat is fixedly connected to the outer wall of the first connecting sleeve, a compression spring is fixedly connected to the spring connecting seat, and a sliding sleeve is fixedly connected to the end of the compression spring away from the spring connecting seat, the compression spring and the sliding sleeve being sleeved on the outside of the first connecting sleeve; multiple limiting protrusions are fixedly connected circumferentially at intervals to the outer wall of the first connecting sleeve, and an annular limiting platform is fixedly connected to the inner wall of the first connecting sleeve, with a sealing groove formed on the side of the annular limiting platform facing the second connecting sleeve; a first connecting pipe is connected to the input end of the first connecting sleeve; The second connecting sleeve has a groove circumferentially formed on its outer wall. An annular sealing gasket is fixedly connected to the input end face of the second connecting sleeve. A buckle seat is fixedly connected to the outer wall of the second connecting sleeve. Two symmetrically distributed deformation buckles are elastically connected to the bottom of the buckle seat. The output end of the second connecting sleeve is integrally connected to a second connecting pipe.

[0006] As a further embodiment of this utility model: the diameter of the mounting hole on the side near the axis of the first connecting sleeve is smaller than the diameter of the ball.

[0007] As a further embodiment of this utility model: the inner wall of the sliding sleeve is provided with an annular flange.

[0008] As a further embodiment of this utility model: the outer wall of the sliding sleeve is provided with anti-slip ridges in the circumferential direction.

[0009] As a further embodiment of this utility model: the upper end of the inner wall of the sliding sleeve is provided with a positioning protrusion that is adapted to the deformation buckle.

[0010] As a further embodiment of this utility model: the cross-sectional dimensions of the slot are adapted to the curvature of the ball extending into the first connecting sleeve, and the depth of the slot matches the extension length of the ball.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: With the "ball engagement + sliding sleeve linkage" structure, when the second connecting sleeve is inserted into the first connecting sleeve, the ball automatically embeds into the slot to complete the initial fixation. Combined with the quick locking of the deformation buckle and the positioning protrusion of the sliding sleeve, no tools are required throughout the process. When separating, only pressing the deformation buckle and sliding the sliding sleeve are required. The second connecting sleeve can be pulled out in two steps, which significantly shortens the operation time when the pipeline layout needs to be adjusted in case of fire.

[0012] The rigid engagement of the ball bearings and the slot, along with the secondary locking mechanism of the inverted triangular buckle, allows it to withstand the impact of high-pressure water flow. Even if the pipe is dragged or vibrated by external forces, it will not loosen or fall off. The annular sealing gasket and sealing groove can adapt to changes in pressure, completely filling the gap and preventing water waste and water pressure loss. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the first connecting sleeve of this utility model; Figure 3 This is a three-dimensional internal structural diagram of the connecting chamber of this utility model.

[0014] In the figure: 1. First connecting sleeve; 2. Mounting hole; 3. Ball bearing; 4. Spring connecting seat; 5. Compression spring; 6. Sliding sleeve; 7. Limiting protrusion; 8. Annular limiting platform; 9. Sealing groove; 10. First connecting pipe; 11. Second connecting sleeve; 12. Slot; 13. Snap fastener; 14. Deformation snap fastener; 15. Second connecting pipe; 16. Annular flange; 17. Annular sealing gasket. Detailed Implementation

[0015] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0016] like Figures 1-3 As shown, this utility model provides a technical solution: A fire-fighting pipe connector with a quick-connect structure includes a first connecting sleeve 1 and a second connecting sleeve 11. The first connecting sleeve 1 has multiple mounting holes 2 extending radially through it, and ball bearings 3 are slidably embedded within the mounting holes 2. A spring connecting seat 4 is fixedly connected to the outer wall of the first connecting sleeve 1, and a compression spring 5 is fixedly connected to the spring connecting seat 4. A sliding sleeve 6 is fixedly connected to the end of the compression spring 5 away from the spring connecting seat 4, and the compression spring 5 and the sliding sleeve 6 are sleeved on the outside of the first connecting sleeve 1. Multiple limiting protrusions 7 are fixedly connected circumferentially at intervals on the outer wall of the first connecting sleeve 1, and an annular limiting platform 8 is fixedly connected to the inner wall of the first connecting sleeve 1. A sealing groove 9 is formed on the side of the annular limiting platform 8 facing the second connecting sleeve 11. A first connecting pipe 10 is connected to the input end of the first connecting sleeve 1. The second connecting sleeve 11 has a slot 12 circumferentially formed on its outer wall. An annular sealing gasket 17 is fixedly connected to the input end face of the second connecting sleeve 11. A buckle seat 13 is fixedly connected to the outer wall of the second connecting sleeve 11. Two symmetrically distributed deformable buckles 14 are elastically connected to the bottom of the buckle seat 13. The output end of the second connecting sleeve 11 is integrally connected to a second connecting pipe 15. Specifically, the first connecting pipe 10 and the second connecting pipe 15 are connected to the inlet pipe and the outlet pipe, respectively. Then, by manually pulling down the sliding sleeve 6, the annular flange 16 on the inner wall of the sliding sleeve 6 moves down and disengages from the radial clamping of the ball 3 in the mounting hole 2 of the first connecting sleeve 1. At this time, the ball 3 loses its outer constraint and can roll freely in the mounting hole 2. The input end of the second connecting sleeve 11 is inserted axially into the first connecting sleeve 1 until its end face is in contact with the annular limiting platform 8 of the first connecting sleeve 1. At this time, the groove 12 on the outer wall of the second connecting sleeve 11 is radially aligned with the mounting hole 2 of the first connecting sleeve 1. The annular sealing gasket 17 at the input end of the second connecting sleeve 11 is embedded in the sealing groove 9 of the first connecting sleeve 1. The diameter of the mounting hole 2 on the side closest to the axis of the first connecting sleeve 1 is smaller than the diameter of the ball 3; Specifically, ensure that only a portion of the ball bearing 3 passes through the inside of the mounting hole 2 to prevent the ball bearing 3 from completely disengaging from the mounting hole 2, which would cause the engagement between the first connecting sleeve 1 and the second connecting sleeve 11 to fail. The inner wall of the sliding sleeve 6 is provided with an annular flange 16; the outer wall of the sliding sleeve 6 is provided with anti-slip ribs in the circumferential direction; the upper end of the inner wall of the sliding sleeve 6 is provided with a positioning protrusion that is adapted to the deformation buckle 14; Specifically, the annular flange 16 on the inner wall of the sliding sleeve 6 restricts the radial displacement of the ball 3 within the mounting hole 2. During firefighting operations, operators' hands may be wet or oily. The anti-slip texture increases the friction between the hand and the sliding sleeve 6 through its uneven surface structure, ensuring that the sliding sleeve 6 does not slip when pulled down, thus improving operational stability. When the compression spring 5 is fully reset, the upper end face of the annular flange 16 fits against the limiting protrusion 7, and the deformation buckle 14 rebounds under its own elasticity. Its inverted triangular bottom edge forms a rigid engagement with the protrusion of the sliding sleeve 6, restricting the downward movement of the sliding sleeve 6 and indirectly ensuring that the ball 3 is always within the slot 12, completing the anti-disengagement closed loop. The cross-sectional dimensions of the slot 12 are adapted to the curvature of the ball 3 extending into the first connecting sleeve 1, and the depth of the slot 12 matches the extension length of the ball 3. Specifically, the ball bearing 3 and the slot 12 are matched in size to form a rigid engagement, preventing the first connecting sleeve 1 and the second connecting sleeve 11 from separating axially; The working principle of this utility model is as follows: First, connect the first connecting pipe 10 and the second connecting pipe 15 to the inlet pipe and the outlet pipe, respectively. Then, manually pull down the sliding sleeve 6 to move the annular flange 16 on the inner wall of the sliding sleeve 6 downward, disengaging it from the radial clamping of the ball 3 in the mounting hole 2 of the first connecting sleeve 1. At this time, the ball 3 loses its external constraint and can roll freely in the mounting hole 2, clearing the obstruction for the insertion of the second connecting sleeve 11. Next, the input end of the second connecting sleeve 11 is inserted axially into the first connecting sleeve 1 until its end face is in contact with the annular limiting platform 8 of the first connecting sleeve 1. At the same time, the slot 12 on the outer wall of the second connecting sleeve 11 is radially aligned with the mounting hole 2 of the first connecting sleeve 1; the annular sealing gasket 17 at the input end of the second connecting sleeve 11 is embedded in the sealing groove 9 of the first connecting sleeve 1 to form a preliminary sealing surface; Finally, the sliding sleeve 6 is released, and the compression spring 5 releases its elastic force to push the sliding sleeve 6 upward and reset. The annular flange 16 of the sliding sleeve 6 moves upward accordingly, applying a radial thrust to the ball 3 and pushing the ball 3 inward into the slot 12 of the second connecting sleeve 11. The ball 3 and the slot 12 are matched in size to form a rigid engagement, preventing the two connecting sleeves from separating axially. At the same time, the protrusion at the upper end of the sliding sleeve 6 contacts the deformation buckle 14 of the second connecting sleeve 11. The axial force is converted into a radial force through the inclined side of the deformation buckle 14, forcing the deformation buckle 14 to bend and deform inward. When the compression spring 5 is fully reset, the upper end face of the annular flange 16 is in contact with the limiting protrusion 7. The deformation buckle 14 rebounds under its own elasticity, and its inverted triangular bottom edge forms a rigid engagement with the protrusion of the sliding sleeve 6, restricting the sliding sleeve 6 from moving downward and indirectly ensuring that the ball 3 is always in the slot 12, completing the anti-disengagement closed loop.

[0017] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A fire-fighting pipe connector with a quick-connect structure, characterized in that, The first connecting sleeve (1) includes a first connecting sleeve (1) and a second connecting sleeve (11). The first connecting sleeve (1) has multiple mounting holes (2) extending radially through it, and ball bearings (3) are slidably embedded in the mounting holes (2). A spring connecting seat (4) is fixedly connected to the outer wall of the first connecting sleeve (1), and a compression spring (5) is fixedly connected to the spring connecting seat (4). A sliding sleeve (6) is fixedly connected to the end of the compression spring (5) away from the spring connecting seat (4). The compression spring (5) and the sliding sleeve (6) are sleeved on the outside of the first connecting sleeve (1). Multiple limiting protrusions (7) are fixedly connected to the outer wall of the first connecting sleeve (1) at intervals around it. An annular limiting platform (8) is fixedly connected to the inner wall of the first connecting sleeve (1). A sealing groove (9) is opened on the side of the annular limiting platform (8) facing the second connecting sleeve (11). A first connecting pipe (10) is connected to the input end of the first connecting sleeve (1). The second connecting sleeve (11) has a slot (12) circumferentially opened on the outer wall. An annular sealing gasket (17) is fixedly connected to the input end face of the second connecting sleeve (11). A buckle seat (13) is fixedly connected to the outer wall of the second connecting sleeve (11). Two symmetrically distributed deformation buckles (14) are elastically connected to the bottom of the buckle seat (13). The output end of the second connecting sleeve (11) is integrally connected to a second pipe (15).

2. A fire-fighting pipe connector with a quick-connect structure according to claim 1, characterized in that: The diameter of the mounting hole (2) on the side near the axis of the first connecting sleeve (1) is smaller than the diameter of the ball (3).

3. A fire-fighting pipe connector with a quick-connect structure according to claim 2, characterized in that: The inner wall of the sliding sleeve (6) is provided with an annular flange (16).

4. A fire-fighting pipe connector with a quick-connect structure according to claim 3, characterized in that: The outer wall of the sliding sleeve (6) is provided with anti-slip ribs.

5. A fire-fighting pipe connector with a quick-connect structure according to claim 4, characterized in that: The upper end of the inner wall of the sliding sleeve (6) is provided with a positioning protrusion that is compatible with the deformation buckle (14).

6. A fire-fighting pipe connector with a quick-connect structure according to claim 5, characterized in that: The cross-sectional dimensions of the slot (12) are adapted to the curvature of the ball (3) extending into the first connecting sleeve (1), and the depth of the slot (12) matches the extension length of the ball (3).

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