Novel fire-fighting pipe connecting device

Abstract

The utility model relates to the related field of connecting devices, in particular to a novel fire-fighting pipe connecting device which comprises a first fire-fighting pipe, a second fire-fighting pipe, a flange, a connecting ring, a threaded rod, an arc-shaped hole, an expansion groove, a clamping groove, a fixing ring, a round nut, a supporting pipe and the like. The fixing ring abuts against the inner wall of the expansion groove to provide preliminary fixation for the two flanges, the threaded rod is matched with the round nut to further improve the stability of flange connection, the stability of flange connection is improved, and then the stability of fire-fighting pipe connection is improved; the two ends of the supporting pipe are inserted into the first fire-fighting pipe and the second fire-fighting pipe correspondingly, a tighter contact face can be formed, the connecting sealing performance of the two fire-fighting pipes is improved, fire-fighting water leakage is reduced, meanwhile, the supporting pipe can provide additional mechanical support, the overall rigidity and stability of the connecting position of the fire-fighting pipes are improved, and the service life of the fire-fighting pipes is prolonged. Fracture of the joint of the fire-fighting pipe due to external acting force is reduced, and the stability of fire-fighting water conveying is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of connecting device related, especially a novel fire pipe connecting device. BACKGROUND

[0002] As a key component of the fire fighting system, the core function of the fire pipe is to quickly, stably and reliably deliver fire water or other corresponding extinguishing medium to the area where the fire extinguishing equipment needs to work normally, so as to achieve effective fire extinguishing and protect life and property safety. When long-distance water delivery is required, if the length of a single fire pipe is not enough to cover the entire distance, two or more fire pipes need to be connected by a connecting device to ensure long-distance delivery of fire water.

[0003] The existing fire pipe and fire pipe are usually flanged and connected, and then two flanges are fixed by bolts to realize the connection of two fire pipes. However, during the long-term operation of the fire pipe, especially in a vibrating environment, the bolts are prone to gradual loosening, which affects the tightness and safety of the connection, and further affects the stability of the fire pipe connection. Moreover, the direct flange connection method has poor sealing at the connection, which may cause fire water leakage. Although the flange connection method can provide sufficient strength, it has low connection point strength under certain extreme conditions, such as high pressure, which may cause connection point fracture and affect the stability of fire water delivery. SUMMARY

[0004] Therefore, in order to solve the above problems, the utility model provides a novel fire pipe connecting device to solve the above technical problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel fire pipe connecting device, comprising a first fire pipe, a second fire pipe connected to the first fire pipe, a flange arranged at one end of each of the first fire pipe and the second fire pipe, a connecting ring arranged between the two flanges, a plurality of sliding holes formed in the connecting ring, a sliding block slidably installed in the sliding hole, and a threaded rod fixed to both ends of the sliding block.

[0006] A support pipe is fixedly installed in the inner ring of the connecting ring, and both ends of the support pipe are movably inserted into the inner side of the first fire pipe and the second fire pipe.

[0007] The threaded rod movably passes through the inner side of the arc-shaped hole formed in the flange, the arc-shaped hole is in communication with the inner side of the expansion groove formed on the outer surface of the flange, the end of the arc-shaped hole extends outward to form a clamping groove, the arc-shaped hole and the clamping groove form an L-shaped structure, and the threaded rod slides along the inner side of the arc-shaped hole to the end of the arc-shaped hole and then moves outward into the clamping groove.

[0008] The fixed ring is arranged on the threaded rod and is attached to the inner side wall of the expansion groove, a round nut is threadedly mounted on the threaded rod and is attached to the outer side end face of the fixed ring, and the circumferential outer surface of the round nut is attached to the inner side end face of the expansion groove.

[0009] The outer diameter of the fixed ring is smaller than the inner side width of the arc-shaped hole and larger than the inner side width of the clamping groove.

[0010] Preferably, the thickness of the sliding block is smaller than the inner side length of the sliding hole, and the sliding block is connected to the inner side of the sliding hole through a spring.

[0011] Preferably, one sealing rubber sheet is attached to each of the left and right end faces of the flange, and the sealing rubber sheet is attached to the inner side end face of the flange.

[0012] Preferably, a plurality of grooves are arranged on the circumferential side surface of the connecting ring.

[0013] Preferably, a support frame is arranged in the support pipe, and the vertical section of the support frame is a cross structure.

[0014] The beneficial effects of the present application are as follows:

[0015] The inner wall of the expansion groove is supported by the fixed ring to provide preliminary fixation for the two flanges, the round nut is rotatably mounted on the threaded rod, the stability of the flange connection is further improved through cooperation of the threaded rod and the round nut, double fixation of the two flanges is realized, the stability of the flange connection is improved, the stability of the fire pipe connection is further improved, the support pipe is inserted into the first fire pipe and the second fire pipe respectively, a more compact contact surface is formed, the sealing property of the connection of the two fire pipes is improved, fire water leakage is reduced, the support pipe can also provide additional mechanical support, the overall rigidity and stability of the connection of the fire pipes are increased, the connection of the fire pipes is prevented from being broken due to external force, and the stability of fire water delivery is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is an explosion structure schematic view of the fire pipe connecting device of the present application;

[0017] Figure 2 is a connecting state structure schematic view of the fire pipe connecting device of the present application;

[0018] Figure 3 is a flange structure schematic view of the present application;

[0019] Figure 4 is a front view cross-sectional structure schematic view of the connecting device of the present application;

[0020] Figure 5 is a connecting ring structure schematic view of the present application;

[0021] Figure 6 is the sliding block connection structure schematic diagram of the utility model;

[0022] Figure 7 is the flange side view connection structure schematic diagram of the utility model.

[0023] Among them: first fire pipe-1, second fire pipe-2, flange-3, connecting ring-4, sliding hole-5, sliding block-6, spring-7, threaded rod-8, arc hole-9, expansion groove-10, clamping groove-11, fixed ring-12, round nut-13, support pipe-14, sealing rubber sheet-15, support frame-16, groove-17. Specific implementation

[0024] In order to further explain the technical scheme of the utility model, the following through specific embodiment is elaborated in detail.

[0025] As Figure 1 Indicated, the utility model provides a kind of novel fire pipe connecting device, including first fire pipe 1, first fire pipe 1 is provided with second fire pipe 2 with it intercommunication outside, first fire pipe 1 and second fire pipe 2 are each provided with one flange 3 in the end of each other close to;

[0026] Specifically, the end of first fire pipe 1 and second fire pipe 2 away from each other is connected with external fire-fighting equipment or other fire pipe, so that first fire pipe 1 and second fire pipe 2 can transport fire water.

[0027] As Figures 1 to 7 Indicated, the left and right opposite sides between the two flanges 3 in the embodiment are provided with connecting ring 4, and four sliding holes 5 are formed on connecting ring 4, each sliding hole 5 is slidably installed with a sliding block 6, and a threaded rod 8 is vertically welded to the left and right ends of sliding block 6.

[0028] The inner ring of connecting ring 4 is fixedly installed with support pipe 14, and the two ends of support pipe 14 are movably inserted into the inner side of first fire pipe 1 and second fire pipe 2, respectively, so that support pipe 14 provides additional mechanical support for first fire pipe 1 and second fire pipe 2, improves the stability of the connection between first fire pipe 1 and second fire pipe 2, and improves the sealing performance of the connection between first fire pipe 1 and second fire pipe 2 through support pipe 14, reduces the leakage of fire water.

[0029] Threaded rod 8 movably passes through the inner side of arc hole 9 formed on the plane of flange 3, arc hole 9 penetrates the inner side of expansion groove 10 formed on the outer surface of flange 3, and the end of arc hole 9 extends outward to form clamping groove 11, arc hole 9 and clamping groove 11 form L-shaped structure, threaded rod 8 slides along the inner side of arc hole 9 to the end of arc hole 9, and then moves outward into clamping groove 11, so that threaded rod 8 is limited and fixed in clamping groove 11 to prevent connecting ring 4 from shifting and sliding.

[0030] The threaded rod 8 is provided with a fixed ring 12 which is attached to the inner wall of the expansion groove 10, and a round nut 13 is threadedly installed on the threaded rod 8 and attached to the outer end surface of the fixed ring 12, and the outer circumferential surface of the round nut 13 is attached to the outer inner wall of the expansion groove 10, and the round nut 13 is used to prevent the threaded rod 8 from falling out of the clamping groove 11 by abutting against the outer inner wall of the expansion groove 2;

[0031] The outer diameter of the fixed ring 12 is smaller than the inner width of the arc-shaped hole 9 and larger than the inner width of the clamping groove 11, and the fixed ring 12 is used to cover the clamping groove 11 and abut against the inner side of the expansion groove 10, thereby preventing the threaded rod 8 from falling out and preventing the two flanges 3 from being separated;

[0032] In the embodiment, the thickness of the sliding block 6 is smaller than the inner length of the sliding hole 5, and the sliding block 6 is connected to the inner side of the sliding hole 5 by the spring 7, so that the sliding block 6 can quickly enter the inner side of the clamping groove 11 under the elastic force of the spring 7;

[0033] In the embodiment, a sealing rubber sheet 15 is attached to each of the left and right end surfaces of the flange 3, and the sealing rubber sheet 15 is attached to the inner end surface of the flange 3, so that the sealing rubber sheet 15 is used to improve the sealing performance of the connection ring 4 and the flange 3, thereby reducing the leakage of the fire-fighting water;

[0034] In the embodiment, a plurality of grooves 17 are formed in the circumferential side surface of the connection ring 4, so that the connection ring 4 can be rotated by pulling the grooves 17;

[0035] In the embodiment, a support frame 16 is installed in the support pipe 14, and the vertical cross section of the support frame 16 is a cross structure, so that the support frame 16 is used to improve the strength of the support pipe 14, thereby enabling the support pipe 14 to provide stronger additional support for the fire-fighting pipe;

[0036] Specifically, the extruded threaded rod 8 drives the sliding block 6 to slide in the sliding hole 5, the spring 7 is elastically stretched under the pulling force of the sliding block 6, the left end of the support pipe 14 is inserted into the first fire-fighting pipe 1, the support pipe 14 is moved, the left end surface of the connection ring 4 is attached to the left flange 3, the left threaded rod 8 drives the fixed ring 12 to pass through the inner side of the left arc-shaped hole 9, and the left fixed ring 12 enters the left expansion groove 10;

[0037] Then, the inner side of the second fire-fighting pipe 2 is aligned with the right end of the support pipe 14, the right end of the support pipe 14 enters the second fire-fighting pipe 2, the right end surface of the connection ring 4 contacts the right flange 3, the right threaded rod 8 drives the right fixed ring 12 to pass through the inner side of the right arc-shaped hole 9, and the right fixed ring 12 enters the right expansion groove 10;

[0038] Then the connecting ring 4 is rotated to drive the threaded rod 8 to slide along the arc-shaped hole 9, and the fixed ring 12 slides along the inner wall of the expansion groove 10, when the threaded rod 8 moves to the end of the arc-shaped hole 9, the sliding block 6 and the threaded rod 8 are moved outward by the elastic force of the spring 7, the threaded rod 8 enters the clamping groove 11, at this time the fixed ring 12 synchronously moves to cover the clamping groove 11, the two flanges 3 are fixed in position by the fixed ring 12 against the inner wall of the expansion groove 10, so as to prevent the two flanges 3 from falling off, then the round nut 13 is used to be fixed on the threaded rod 8, so as to further fix the position of the flanges 3, and since the round nut 13 is against the inner side end surface of the expansion groove 10, the threaded rod 8 cannot fall off from the clamping groove 11, the stability of the flanges 3 connection is improved, so as to improve the stability of the connection between the first fire-fighting pipe 1 and the second fire-fighting pipe 2, and more fire-fighting pipes can be connected in the same way, so as to realize long-distance conveying of fire-fighting water.

[0039] The above only provides preferred examples of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A novel fire-fighting pipe connecting device, comprising a first fire-fighting pipe, a second fire-fighting pipe arranged outside the first fire-fighting pipe and communicated with the first fire-fighting pipe, a flange arranged at each end of the first fire-fighting pipe and the second fire-fighting pipe close to each other, a connecting ring arranged between the two flanges, a plurality of sliding holes arranged on the connecting ring, a sliding block slidably arranged in each sliding hole, a threaded rod fixed at each end of the sliding block, a support tube fixedly arranged on the inner circle of the connecting ring, the two ends of the support tube inserted into the inner side of the first fire-fighting pipe and the second fire-fighting pipe respectively, the threaded rod movably arranged through the inner side of an arc-shaped hole arranged on the flange, the arc-shaped hole communicated with the inner side of an expansion groove arranged on the outer surface of the flange, the end of the arc-shaped hole extended outward to form a clamping groove, the arc-shaped hole and the clamping groove combined into an L-shaped structure, the threaded rod slid along the inner side of the arc-shaped hole to the end of the arc-shaped hole and then moved outward into the clamping groove, a fixing ring arranged on the threaded rod and matched with the inner side wall of the expansion groove, a circular nut threadedly arranged on the threaded rod and matched with the outer side end surface of the fixing ring, the circumferential outer surface of the circular nut matched with the inner side end surface of the expansion groove, the outer diameter of the fixing ring smaller than the inner side width of the arc-shaped hole and larger than the inner side width of the clamping groove. characterized in that The thickness of the sliding block is smaller than the inner side length of the sliding hole, and the sliding block is connected to the inner side of the sliding hole through a spring. The left and right end surfaces of the flange are each pasted with a sealing rubber sheet matched with the inner side end surface of the flange. A plurality of grooves are arranged on the circumferential side surface of the connecting ring. A support frame is arranged in the support tube, and the vertical section of the support frame is a cross structure. ​ 2. A novel fire hose coupling device as claimed in claim 1, wherein: ​ 3. A new fire hose coupling device as claimed in claim 1, wherein: ​ 4. The new fire hose coupling device as claimed in claim 1, wherein: ​ 5. The new fire hose coupling device as claimed in claim 1, wherein: ​

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