Safety valve of fire extinguisher

Abstract

The utility model relates to the technical field of fire extinguisher safety valves, in particular to a fire-fighting fire extinguisher safety valve which comprises a fire extinguisher safety valve body, the outer wall of the fire extinguisher safety valve body is fixedly connected with an injection pipeline, and the injection pipeline is communicated with the interior of the fire extinguisher safety valve body. And the injection pipeline is movably connected with an external pipe through a connecting piece. According to the safety valve of the fire extinguisher, good fastening force is achieved between the first butt flange and the second butt flange, the sealing ring made of the silicone rubber material in the external pipe can also be inserted into the inner wall of the injection pipeline at the moment, and due to the fact that the sealing ring is made of the silicone rubber material and the outer contour is matched with the inner contour of the injection pipeline, better sealing performance can be achieved; at the moment, the injection pipeline and the external pipe can be in complete butt joint, repeated screwing is not needed in the butt joint process, only the guide rods of the multiple fixing frames need to be pressed in sequence and then rotate by a small angle, and the installation process is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguisher safety valves, in particular to a fire extinguisher safety valve. Background Art

[0002] When the existing fire extinguisher safety valves on the market are put into use, an extension tube is usually connected to the output end of the safety valve, which can extend the spray distance of the fire extinguisher and increase the safety distance of the user;

[0003] However, the installation of extension pipes currently usually adopts direct interference sleeves between pipe fittings or butt joints using flanges and bolts. Although the interference sleeve is convenient, it is easy for the extension pipe to fall off when the filling in the high-pressure fire extinguisher is sprayed outward. The butt connection of flanges and bolts requires continuous screwing during installation and dismantling, which is inconvenient. Utility Model Content

[0004] The utility model provides a fire extinguisher safety valve, which has the beneficial effect of convenient and quick installation and removal of the extension tube, and solves the problem mentioned in the above background technology that the extension tube is easy to fall off when the filling in the high-pressure fire extinguisher is sprayed outward, and the docking connection between the flange and the bolt requires continuous screwing and installation during installation, and also requires continuous screwing and removal during removal, which is inconvenient. In order to achieve the above purpose, the utility model provides the following technical solutions: a fire extinguisher safety valve, including a fire extinguisher safety valve body, the outer wall of the fire extinguisher safety valve body is fixedly connected to an injection pipe, the injection pipe is connected to the interior of the fire extinguisher safety valve body, the injection pipe is movably connected to an external pipe through a connecting piece, the connecting piece includes a first docking flange and a second docking flange, the second docking flange and the first docking flange are respectively fixedly connected to the ends of the injection pipe and the external pipe.

[0005] As an optional solution for a safety valve of a fire extinguisher described in the utility model, wherein: the outer wall of the first docking flange is fixedly connected to a fixing frame, and the inner wall of the fixing frame is movably connected to the second docking flange through a clamping piece.

[0006] As an optional solution for a fire extinguisher safety valve described in the utility model, the clamping part includes a guide rod, which is slidably embedded in the interior of a fixed frame, and the outer wall of the guide rod is sleeved with a reset spring, one end of the reset spring is fixedly connected to the inner wall of the fixed frame, and the other end of the reset spring is fixedly linked to a pressing plate, and the pressing plate is fixedly connected to the outer wall of the guide rod.

[0007] As an optional solution for a fire extinguisher safety valve described in the utility model, one end of the guide rod is fixedly connected to a second limit block, the outer wall of the second docking flange is provided with a limit groove, and the inner contour of the limit groove matches the outer contour of the second limit block.

[0008] As an optional solution for a safety valve of a fire extinguisher described in the utility model, wherein: a groove is provided on the inner wall of the limit groove, and the inner contour of the groove is larger than the outer contour of the groove.

[0009] As an optional solution for a fire extinguisher safety valve described in the utility model, wherein: a sealing ring is fixedly connected to the inner wall of the external pipe, the sealing ring is set to be a silicone rubber material, and the outer contour of the sealing ring matches the inner contour of the injection pipe.

[0010] As an optional solution for a fire extinguisher safety valve described in the utility model, wherein: a fire extinguisher handle is fixedly connected to the outer wall of the fire extinguisher safety valve body, and a trigger wrench is hinged on the outer wall of the fire extinguisher handle.

[0011] As an optional solution of a fire extinguisher safety valve described in the utility model, wherein: the outer wall of the trigger wrench is provided with a second limit hole, the outer wall of the fire extinguisher safety valve body is provided with a first limit hole, and the inner walls of the second limit hole and the first limit hole are slidably provided with limit pins;

[0012] The outer wall of the limit pin is fixedly connected with a first limit block for limiting the rotation of the trigger wrench, and the first limit block conflicts with the trigger wrench and the outer wall of the fire extinguisher handle.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, when the external pipe is butt-jointed with the injection pipe, the guide rod is pressed and then rotated, and at this time, the second limit block is continuously forced in the groove and stuck at the notch of the limit groove but cannot be disengaged;

[0015] There is a good fastening force between the first docking flange and the second docking flange, and at this time the silicone rubber sealing ring in the external tube will also be inserted into the inner wall of the injection pipe. Because it is made of silicone rubber and the outer contour matches the inner contour of the injection pipe, it can have better sealing. At this time, the injection pipe and the external tube can be completely docked. There is no need to repeatedly twist during the docking process. You only need to press the guide rods of multiple fixed frames in turn and then turn them at a small angle. The installation process is relatively simple.

[0016] In the utility model, when the fire extinguisher is idle, the end of the limit pin is inserted into the second limit hole and the first limit hole. As the limit pin is inserted to the maximum extent, the first limit block on the outer wall of the limit pin will be located between the trigger wrench and the fire extinguisher safety valve body, hindering the tendency of the trigger wrench to rotate along the hinge, thereby preventing the fire extinguisher safety valve body from being accidentally opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 It is a front view structural cross-sectional view of the utility model;

[0020] Figure 4 For the utility model Figure 3 Schematic diagram of the local structure;

[0021] Figure 5 For the utility model Figure 4 A magnified view of the structure at center;

[0022] Figure 6 For the utility model Figure 5 Enlarged view of the structure at point B in the middle.

[0023] In the figure: 1. fire extinguisher safety valve body; 2. fire extinguisher handle; 3. first limit socket; 4. second limit socket; 5. limit pin; 6. trigger wrench; 7. first limit block; 8. injection pipe; 9. external pipe; 10. first docking flange; 101. second docking flange; 11. fixing frame; 12. guide rod; 13. pressing plate; 14. reset spring; 15. groove; 16. second limit block; 1501. limit groove; 161. sealing ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] This embodiment is intended to promote the solution of the current installation of extension pipes, which usually adopts direct interference sleeve connection between pipe fittings or uses flanges and bolts for docking. Although the interference sleeve connection is convenient, it is easy for the extension pipe to fall off when the filling in the high-pressure fire extinguisher is sprayed outward, and the docking connection of the flange and the bolt requires continuous screwing during installation and removal, which is inconvenient. Please refer to Figure 1-Figure 6 A fire extinguisher safety valve comprises a fire extinguisher safety valve body 1, an outer wall of the fire extinguisher safety valve body 1 is fixedly connected with an injection pipe 8, the injection pipe 8 is connected with the interior of the fire extinguisher safety valve body 1, the injection pipe 8 is movably connected with an external pipe 9 through a connecting piece, the connecting piece comprises a first docking flange 10 and a second docking flange 101, the second docking flange 101 and the first docking flange 10 are respectively fixedly connected to the ends of the injection pipe 8 and the external pipe 9;

[0027] The outer wall of the first docking flange 10 is fixedly connected with a fixing frame 11, and the inner wall of the fixing frame 11 is movably connected with the second docking flange 101 through a clamping piece;

[0028] The clamping member includes a guide rod 12, which is slidably embedded in the interior of the fixed frame 11, and a return spring 14 is sleeved on the outer wall of the guide rod 12, one end of the return spring 14 is fixedly connected to the inner wall of the fixed frame 11, and the other end of the return spring 14 is fixedly linked to a pressing plate 13, and the pressing plate 13 is fixedly connected to the outer wall of the guide rod 12;

[0029] One end of the guide rod 12 is fixedly connected to a second limit block 16, and an outer wall of the second docking flange 101 is provided with a limit groove 1501, and the inner contour of the limit groove 1501 matches the outer contour of the second limit block 16;

[0030] The inner wall of the limiting groove 1501 is provided with a groove 15, and the inner contour of the groove 15 is larger than the outer contour of the groove 15;

[0031] The inner wall of the external pipe 9 is fixedly connected with a sealing ring 161, which is made of silicone rubber. The outer contour of the sealing ring 161 matches the inner contour of the injection pipe 8.

[0032] The outer wall of the fire extinguisher safety valve body 1 is fixedly connected with a fire extinguisher handle 2, and the outer wall of the fire extinguisher handle 2 is hinged with a trigger wrench 6;

[0033] The outer wall of the trigger wrench 6 is provided with a second limit hole 4, the outer wall of the fire extinguisher safety valve body 1 is provided with a first limit hole 3, and the inner walls of the second limit hole 4 and the first limit hole 3 are slidably provided with a limit pin 5;

[0034] The outer wall of the limiting pin 5 is fixedly connected with a first limiting block 7 for limiting the rotation of the trigger wrench 6 , and the first limiting block 7 abuts against the trigger wrench 6 and the outer wall of the fire extinguisher handle 2 .

[0035] In this embodiment: when the existing fire extinguisher safety valve on the market is put into use, an extension tube is usually connected to the output end of the safety valve, which can extend the spraying distance of the fire extinguisher and increase the safety distance of the user. However, the extension tube is usually installed by direct interference sleeve between pipe fittings or by using flanges and bolts for docking. Although the interference sleeve is convenient, it is easy to cause the extension tube to fall off when the filling in the high-pressure fire extinguisher is sprayed outward, and the butt connection of the flange and the bolt requires continuous screwing during installation and removal, which is inconvenient.

[0036] In order to facilitate the removal and installation of the extension tube, when the external tube 9 and the injection pipe 8 are docked and installed, the first docking flange 10 at the end of the external tube 9 is first aligned with the second docking flange 101 at the end of the injection pipe 8, and then the guide rod 12 is pressed to cause the pressing plate 13 on the outer wall of the guide rod 12 to move away from the position of the return spring 14. The movement of the pressing plate 13 causes the return spring 14 to be in a pulled and taut state. At this time, as the end of the guide rod 12 moves, the second limit block 16 fixedly connected to the end of the guide rod 12 eventually enters the groove 15 through the limit groove 1501. At this time, it is only necessary to rotate the guide rod 12 to cause the second limit block 16 at the end of the guide rod 12 to rotate in the groove 15 with a larger inner contour, so that the outer contour of the second limit block 16 does not match the inner contour of the limit groove 1501 at this time. At this time, due to the reset pulling force of the return spring 14, the second limit block 16 is continuously subjected to force in the groove 15 and is stuck at the notch of the limit groove 1501 but cannot fall out.

[0037] And because there are multiple fixing frames 11, and the above-mentioned clamping structure is provided in the multiple fixing frames 11, after the above-mentioned operations are performed one by one, the first docking flange 10 and the second docking flange 101 have good fastening force, and the sealing ring 161 of the silicone rubber material in the external pipe 9 will also be inserted into the inner wall of the injection pipe 8. Since it is made of silicone rubber and the outer contour matches the inner contour of the injection pipe 8, it can have better sealing performance. At this time, the injection pipe 8 and the external pipe 9 can be completely docked. There is no need to repeatedly twist during the docking process. It only needs to press the guide rods 12 of the multiple fixing frames 11 in turn and then rotate them at a small angle. The installation process is relatively simple;

[0038] When it is necessary to remove the external tube 9, the rotating guide rods 12 in the multiple fixed frames 11 are rotated in sequence. After the guide rods 12 are rotated, the second limit blocks 16 fixed at the ends of the guide rods 12 are rotated along the corresponding grooves 15 until the contour of the second limit blocks 16 matches the inner contour of the limit groove 1501. At this time, the reset tension of the reset spring 14 causes the pressing plate 13 to reset. During the reset of the pressing plate 13, the guide rods 12 and the second limit blocks 16 are reset and moved, causing the second limit blocks 16 to disengage from the limit groove 1501. At this time, the external tube 9 is pulled out to complete the removal of the external tube 9.

[0039] A second limit hole 4 and a first limit hole 3 are respectively provided on the outer walls of the trigger wrench 6 and the fire extinguisher safety valve body 1. When the fire extinguisher is idle, the end of the limit pin 5 is inserted into the second limit hole 4 and the first limit hole 3. As the limit pin 5 is inserted to the maximum extent, the first limit block 7 on the outer wall of the limit pin 5 will be located between the trigger wrench 6 and the fire extinguisher safety valve body 1, hindering the tendency of the trigger wrench 6 to rotate along the hinge, thereby preventing the fire extinguisher safety valve body 1 from being accidentally opened.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fire extinguisher safety valve, comprising a fire extinguisher safety valve body (1), characterized in that: The outer wall of the fire extinguisher safety valve body (1) is fixedly connected to a spray pipe (8), the spray pipe (8) is connected to the interior of the fire extinguisher safety valve body (1), the spray pipe (8) is movably connected to an external pipe (9) via a connecting piece, the connecting piece comprises a first docking flange (10) and a second docking flange (101), the second docking flange (101) and the first docking flange (10) are respectively fixedly connected to the ends of the spray pipe (8) and the external pipe (9).

2. A fire extinguisher safety valve according to claim 1, characterized in that: The outer wall of the first docking flange (10) is fixedly connected to a fixing frame (11), and the inner wall of the fixing frame (11) is movably connected to the second docking flange (101) via a clamping piece.

3. A fire extinguisher safety valve according to claim 2, characterized in that: The clamping member comprises a guide rod (12), the guide rod (12) is slidably embedded in the interior of the fixed frame (11), the outer wall of the guide rod (12) is sleeved with a return spring (14), one end of the return spring (14) is fixedly connected to the inner wall of the fixed frame (11), and the other end of the return spring (14) is fixedly linked to a pressing plate (13), and the pressing plate (13) is fixedly connected to the outer wall of the guide rod (12).

4. A fire extinguisher safety valve according to claim 3, characterized in that: One end of the guide rod (12) is fixedly connected to a second limit block (16), and an outer wall of the second docking flange (101) is provided with a limit groove (1501), and an inner contour of the limit groove (1501) matches an outer contour of the second limit block (16).

5. A fire extinguisher safety valve according to claim 4, characterized in that: The inner wall of the limiting groove (1501) is provided with a groove (15), and the inner contour of the groove (15) is larger than the outer contour of the groove (15).

6. A fire extinguisher safety valve according to claim 5, characterized in that: A sealing ring (161) is fixedly connected to the inner wall of the external pipe (9); the sealing ring (161) is made of silicone rubber; and the outer contour of the sealing ring (161) matches the inner contour of the injection pipe (8).

7. A fire extinguisher safety valve according to claim 6, characterized in that: The outer wall of the fire extinguisher safety valve body (1) is fixedly connected to a fire extinguisher handle (2), and the outer wall of the fire extinguisher handle (2) is hingedly connected to a trigger wrench (6).

8. A fire extinguisher safety valve according to claim 7, characterized in that: The outer wall of the trigger wrench (6) is provided with a second limit hole (4), the outer wall of the fire extinguisher safety valve body (1) is provided with a first limit hole (3), and the inner walls of the second limit hole (4) and the first limit hole (3) are slidably provided with a limit pin (5); The outer wall of the limit pin (5) is fixedly connected with a first limit block (7) for limiting the rotation of the trigger wrench (6), and the first limit block (7) abuts against the trigger wrench (6) and the outer wall of the fire extinguisher handle (2).

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