Fire extinguisher safety valve

Abstract

The utility model relates to the technical field of fire extinguisher, specifically disclose fire extinguisher safety valve, including the valve body and install the handle of the valve body top, the handle end rotatory connection press the handle, still include for the handle and press the handle rotation limit safety pin spare, the valve body one side install the spray pipe, the spray pipe end connects the extension tube, install locking spare for fixing extension tube on the spray pipe, the utility model discloses the limit piece to the hard pipe realizes the circumferential location, rotates locking sleeve, and the hard pipe is fixed on the pipe body through the screwing pressure of internal thread and external thread, realizes the axial location of hard pipe, avoids the rotation location of operating multiple guide bars one by one, and the threaded locking replaces multiple guide rod operation, and can carry out the circumferential location to the hard pipe before fixing, and safety pin spare double locking improves the practicality of safety valve.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguisher technology, specifically to the safety valve of a fire extinguisher. Background Technology

[0002] A fire extinguisher is a small, lightweight fire-fighting device that can be operated by a single person to extinguish initial fires and prevent their spread. The safety valve is a key component controlling the discharge of the extinguishing agent. By opening and closing the valve, the discharge time and volume of the extinguishing agent can be controlled, ensuring the appropriate use of the extinguishing agent during firefighting and achieving the best extinguishing effect. The valve also serves a sealing function, preventing leakage of the extinguishing agent from the fire extinguisher, and maintaining stable internal pressure when not in use, ensuring the fire extinguisher is in good working order. Safety valves typically have limiting pins or other limiting components, which are released during use. Some safety valves have an external connecting pipe at the outlet.

[0003] A fire extinguisher safety valve disclosed in existing patent publication number CN222218480U includes a fire extinguisher safety valve body. A spray pipe is fixedly connected to the outer wall of the fire extinguisher safety valve body, and the spray pipe is connected to the interior of the fire extinguisher safety valve body. An external connecting pipe is movably connected to the spray pipe via a connector, which includes a first mating flange and a second mating flange. The second mating flange and the first mating flange are respectively fixedly connected to the ends of the spray pipe and the external connecting pipe. When the external connecting pipe is connected to the spray pipe, pressing and rotating the guide rod causes the second limiting block to be continuously stressed and stuck at the opening of the limiting groove within the groove, but it cannot be dislodged.

[0004] The aforementioned safety valve requires the sequential rotation of multiple rotating guide rods within fixed frames during operation. After rotation, the guide rods, along with their corresponding second limiting blocks fixed at their ends, rotate within their respective grooves. Furthermore, the guide rods are relatively small, making operation inconvenient and affecting the installation of their external connecting pipes. To address these issues, a fire extinguisher safety valve is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a safety valve for fire extinguishers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A fire extinguisher safety valve includes a valve head body and a handle mounted on the top of the valve head body, with a pressure handle rotatably connected to the end of the handle; it also includes a safety pin for limiting the rotation of the handle and the pressure handle, a nozzle is mounted on one side of the valve head body, an extension tube is connected to the end of the nozzle, and a locking device for fixing the extension tube is mounted on the nozzle; The nozzle includes a tube body fixedly connected to the nozzle head valve body, and a limiting ring is connected to the tube body; The extension tube includes a flexible tube and a rigid tube connected to the end of the flexible tube and connected to the tube body. The tube body is provided with a limiting member for restricting the rotation of the rigid tube. The locking component includes a locking sleeve fitted onto the pipe body, the locking sleeve having an internal thread, and the outer wall of the rigid pipe having an external thread that mates with the internal thread.

[0007] In one alternative embodiment: the safety pin includes a pull ring and two sets of pins connected to the pull ring. The end of each pin away from the pull ring has a through hole, and a through rod is inserted into the through hole. The outer wall of the through rod is connected to an anti-slip spike, and one end of the through rod is connected to the pull ring.

[0008] In one alternative: both the handle and the pressure handle are provided with through holes for the pin to pass through, and the pin located at the top is placed on the top of the handle.

[0009] In one alternative: the limiting element includes two sets of limiting strips connected to the outer wall of the tube body, the limiting strips being positioned on the side of the limiting ring away from the valve body, the inner wall of the rigid tube having a strip groove that mates with the limiting strips, and the end of the rigid tube away from the flexible tube contacting the side of the limiting ring.

[0010] In one alternative: the width of the limiting strip on the side away from the tube body is greater than the width of the tube body on the side closer to the tube body.

[0011] In one alternative: the locking sleeve has a circular hole on the side away from the rigid tube that slides with the outer wall of the tube.

[0012] In one alternative: a pressure gauge is installed on one side of the valve body.

[0013] Compared with the prior art, the beneficial effects of this utility model are: In this invention, a limiting component is used to circumferentially limit the rigid pipe. By rotating the locking sleeve, the internal and external threads are engaged and clamped to fix the rigid pipe to the pipe body, thus achieving axial limiting of the rigid pipe. This avoids the need to operate multiple guide rods one by one for rotational limiting. Threaded locking replaces the operation of multiple guide rods, and the rigid pipe can be circumferentially limited before fixing. The safety pin provides double locking, improving the practicality of the safety valve. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the disassembled nozzle and extension tube in this utility model.

[0016] Figure 3 This is a schematic diagram of the safety pin in this utility model.

[0017] Figure 4This is a schematic diagram of the nozzle and locking component in this utility model.

[0018] Figure 5 This is a partial cross-sectional view of the structure of this utility model.

[0019] In the diagram: 1. Valve head; 2. Handle; 3. Pressure handle; 4. Safety pin; 5. Nozzle; 6. Extension tube; 7. Locking element; 8. Pressure gauge; 41. Hand pull ring; 42. Pin; 43. Through hole; 44. Through rod; 45. Anti-slip spike; 46. Pull ring; 51. Tube body; 52. Limiting ring; 53. Limiting strip; 61. Flexible hose; 62. Rigid tube; 63. External thread; 64. Groove; 71. Locking sleeve; 72. Internal thread; 73. Round hole. Detailed Implementation

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 In this embodiment, the fire extinguisher safety valve includes a valve head 1 and a handle 2 installed on the top of the valve head 1. The end of the handle 2 is rotatably connected to a pressure handle 3. It also includes a safety pin 4 for limiting the rotation of the handle 2 and the pressure handle 3. A nozzle 5 is installed on one side of the valve head 1. The end of the nozzle 5 is connected to an extension tube 6. A locking element 7 for fixing the extension tube 6 is installed on the nozzle 5. The nozzle 5 includes a pipe body 51 fixedly connected to the head valve body 1, and a limiting ring 52 is connected to the pipe body 51. The extension tube 6 includes a flexible tube 61 and a rigid tube 62 connected to the end of the flexible tube 61 and connected to the tube body 51. The tube body 51 is provided with a limiting member for restricting the rotation of the rigid tube 62. The locking component 7 includes a locking sleeve 71 sleeved on the tube body 51, the locking sleeve 71 is provided with an internal thread 72, and the outer wall of the rigid tube 62 is provided with an external thread 63 that mates with the internal thread 72. Using the above scheme, the rigid tube 62 is circumferentially limited by the limiting component. By rotating the locking sleeve 71, the rigid tube 62 is fixed on the tube body 51 by the tightening force of the internal thread 72 and the external thread 63, thus achieving axial limitation of the rigid tube 62.

[0023] Please see Figure 3 The safety pin 4 includes a pull ring 41 and two sets of pins 42 connected to the pull ring 41. The pin 42 has a through hole 43 at the end away from the pull ring 41. A through rod 44 passes through the through hole 43. The outer wall of the through rod 44 is connected to an anti-slip spike 45. One end of the through rod 44 is connected to a pull ring 46. Specifically, the pin 42 passes through the handle 2 and the pressure handle 3. Then the through rod 44 passes through the through hole 43. The anti-slip spike 45 can prevent the through rod 44 from coming out of the through hole 43. When it is necessary to contact the limit, the through rod 44 can be pulled by the pull ring 46. Then the pin 42 can be pulled away from the handle 2 and the pressure handle 3 by the pull ring 41.

[0024] Please see Figure 1 and Figure 2 Both the handle 2 and the pressure handle 3 are provided with through holes for the pin 42 to pass through. The pin 42 located at the top is placed on the top of the handle 2 for easy and intuitive observation of the safety status. Specifically, the two sets of pins 42 pass through the through holes of the handle 2 and the pressure handle 3, and the anti-slip spikes 45 of the through rod 44 and the frictional resistance of the through hole 43 form a double fixation.

[0025] Please see Figure 4 and Figure 5 The limiting component includes two sets of limiting strips 53 connected to the outer wall of the tube body 51. The limiting strips 53 are located on the side of the limiting ring 52 away from the valve body 1. The inner wall of the rigid tube 62 is provided with a strip groove 64 that mates with the limiting strips 53. The end of the rigid tube 62 away from the flexible tube 61 contacts the side of the limiting ring 52. The limiting strips 53 mate with the strip groove 64 to achieve circumferential limiting.

[0026] Furthermore, the width of the limiting strip 53 on the side away from the tube body 51 is greater than the width of the tube body 51 on the side closer to the tube body 51; forming a self-locking structure and enhancing the resistance to torsion.

[0027] Please see Figure 4 The locking sleeve 71 has a circular hole 73 on the side away from the rigid tube 62, which slides with the outer wall of the tube body 51; this facilitates the movement and rotation of the locking sleeve 71.

[0028] Please see Figure 1 A pressure gauge 8 is installed on one side of the valve body 1 of the fire extinguisher, and the pressure gauge displays the pressure status inside the fire extinguisher in real time.

[0029] The working principle of this utility model is as follows: the rigid pipe 62 is installed and connected, the limiting strip 53 is connected with the strip groove 64 to achieve circumferential limiting, the locking sleeve 71 is rotated, and the rigid pipe 62 is fixed on the pipe body 51 by the tightening force of the internal thread 72 and the external thread 63, thereby achieving axial limiting of the rigid pipe 62. When the limiting of the handle 2 and the pressure handle 3 is released, the through rod 44 can be pulled by the pull ring 46, and then the pin 42 can be pulled away from the handle 2 and the pressure handle 3 by the hand pull ring 41, so that the pressure handle 3 can be pressed.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A fire extinguisher safety valve, comprising a valve body (1) and a handle (2) mounted on the top of the valve body (1), wherein a pressure handle (3) is rotatably connected to the end of the handle (2); Its features are: It also includes a safety pin (4) for limiting the rotation of the handle (2) and the pressure handle (3), a nozzle (5) is installed on one side of the valve body (1), an extension tube (6) is connected to the end of the nozzle (5), and a locking element (7) for fixing the extension tube (6) is installed on the nozzle (5). The nozzle (5) includes a tube (51) fixedly connected to the head valve body (1), and a limiting ring (52) is connected to the tube (51); The extension tube (6) includes a flexible tube (61) and a rigid tube (62) connected to the end of the flexible tube (61) and connected to the tube body (51). The tube body (51) is provided with a limiting member for restricting the rotation of the rigid tube (62). The locking component (7) includes a locking sleeve (71) sleeved on the tube body (51), the locking sleeve (71) having an internal thread (72), and the outer wall of the rigid tube (62) having an external thread (63) that mates with the internal thread (72).

2. The fire extinguisher safety valve according to claim 1, characterized in that: The safety pin (4) includes a pull ring (41) and two sets of pins (42) connected to the pull ring (41). The pin (42) has a through hole (43) at the end away from the pull ring (41). A through rod (44) is inserted into the through hole (43). The outer wall of the through rod (44) is connected to an anti-slip spike (45). One end of the through rod (44) is connected to a pull ring (46).

3. The fire extinguisher safety valve according to claim 2, characterized in that: Both the handle (2) and the pressure handle (3) are provided with through holes for the pin (42) to pass through, and the pin (42) located at the top is placed on the top of the handle (2).

4. The fire extinguisher safety valve according to claim 1, characterized in that: The limiting component includes two sets of limiting strips (53) connected to the outer wall of the tube body (51). The limiting strips (53) are placed on the side of the limiting ring (52) away from the valve body (1). The inner wall of the rigid tube (62) is provided with a strip groove (64) that mates with the limiting strips (53). The end of the rigid tube (62) away from the flexible tube (61) contacts the side of the limiting ring (52).

5. The fire extinguisher safety valve according to claim 4, characterized in that: The width of the limiting strip (53) on the side away from the tube body (51) is greater than the width of the tube body (51) on the side closer to the tube body (51).

6. The fire extinguisher safety valve according to claim 1, characterized in that: The locking sleeve (71) has a round hole (73) on the side away from the rigid tube (62) that slides with the outer wall of the tube body (51).

7. The fire extinguisher safety valve according to claim 1, characterized in that: A pressure gauge (8) is installed on one side of the valve body (1).

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