Fire extinguisher valve convenient to assemble

Abstract

The utility model relates to the technical field of valves, in particular to a fire extinguisher valve convenient to assemble. The fire extinguisher valve convenient to assemble comprises a valve seat, an inner connecting pipe and an outer threaded cylinder are fixedly installed at the bottom of the valve seat, an annular elastic air bag is installed on the outer threaded cylinder, a micro air pressure sensor is installed on the valve seat, and an alarm is installed on the micro air pressure sensor. According to the fire extinguisher valve convenient to assemble, provided by the utility model, the annular elastic air bag expands quickly and fills a gap between the external thread cylinder and the threaded connector of the fire extinguisher steel cylinder, so that the stability and the sealing performance of the connection between the external thread cylinder and the threaded connector of the fire extinguisher steel cylinder are improved; the hidden danger that connection between the valve and the fire extinguisher steel cylinder fails due to vibration of the fire extinguisher steel cylinder or the valve is eliminated, if the annular elastic air bag is damaged, the alarm gives an early warning rapidly, a user is prompted to be maintained rapidly by professionals, and therefore safety is greatly improved.

Description

Technical Field

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

[0002] During the production and assembly of fire extinguishers, the reliability of the connection between the valve and the cylinder directly affects the safety of the fire extinguisher. In the existing technology, the connection between the fire extinguisher valve and the cylinder mostly adopts a threaded fitting structure, which is screwed and fixed by the external threaded barrel at the bottom of the valve seat and the internal thread of the cylinder interface. However, this traditional connection method is prone to insufficient sealing. For example, the thread fitting gap is difficult to completely eliminate. Especially after long-term use or slight deformation of the cylinder or valve, gas leakage is prone to occur, affecting the fire extinguishing efficiency of the fire extinguisher. In addition, relying solely on threaded connection, in scenarios such as transportation, vibration or collision, it is easy for the thread to loosen and cause the connection between the valve and the cylinder to fail, posing a safety hazard. At the same time, after assembly, it is impossible to detect the sealing status of the connection part in real time. It can only be detected through regular manual inspection, and it is difficult to detect hidden leakage problems in a timely manner.

[0003] Therefore, it is necessary to provide a new fire extinguisher valve that is convenient to assemble 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 extinguisher valve that is easy to assemble.

[0005] The fire extinguisher valve provided by the utility model is easy to assemble and comprises a valve seat, an inner tube and an outer threaded barrel are fixedly mounted on the bottom of the valve seat, and the outer threaded barrel is located outside the inner tube;

[0006] An inner ring air storage cavity is provided in the external threaded barrel, and an annular elastic air bag is installed on the outer barrel wall of the external threaded barrel close to the valve seat, and the inner ring air storage cavity and the annular elastic air bag are communicated with each other;

[0007] A sliding piston ring is installed in the inner ring air storage cavity, and a plurality of annularly distributed pressing rods are fixedly installed on the bottom of the piston ring;

[0008] A micro air pressure sensor for detecting the air pressure of the annular elastic airbag is installed on the valve seat, and an electrically connected alarm is installed on the micro air pressure sensor.

[0009] Preferably, an outer ring groove is formed on the outer cylinder wall of the external threaded cylinder close to the valve seat, the annular elastic airbag is sleeved in the outer ring groove, and the inner ring wall of the annular elastic airbag is fixedly connected to the groove wall of the outer ring groove.

[0010] Preferably, the outer ring groove is provided with a plurality of annularly distributed docking holes connected to the inner ring air storage cavity, and a plurality of annularly distributed docking tubes are fixedly installed on the inner bag wall of the annular elastic airbag, and the docking tubes are inserted into the corresponding docking holes one by one and fixedly connected to the docking holes.

[0011] Preferably, the bottom rod head of the pressing rod passes through a through hole opened at the bottom of the external threaded barrel and is fixedly provided with an abutment ring.

[0012] Preferably, an air guide tube is installed on the annular elastic airbag, and the air guide tube passes through the installation through hole opened in the valve seat and is connected to the detection silicon film in the micro air pressure sensor.

[0013] Preferably, a limiting ring is fixedly installed on the inner wall of the inner ring air storage cavity close to the top, and the limiting ring is located below the docking hole.

[0014] Preferably, a fixed arm that is fixedly connected and a rotating handle that is rotatably connected are installed on the valve seat.

[0015] Compared with the related art, the fire extinguisher valve provided by the present invention is easy to assemble and has the following beneficial effects:

[0016] 1. The annular elastic airbag in this utility model rapidly expands and fills the gap between the externally threaded barrel and the threaded interface of the fire extinguisher cylinder, greatly improving the stability and sealing of the threaded interface between the externally threaded barrel and the fire extinguisher cylinder. The expanded annular elastic airbag has an elastic structure, eliminating the hidden danger of failure of the connection between the valve and the fire extinguisher cylinder due to vibration of the fire extinguisher cylinder or valve. Therefore, efficient sealing can be achieved without the need for additional seals, simplifying the assembly steps.

[0017] 2. In the present invention, when the annular elastic airbag is rapidly inflated, part of the gas acts on the detection silicon film in the micro air pressure sensor through the air guide tube. If the micro air pressure sensor shows unstable pressure or the pressure value is lower than the predetermined value range, it indicates that the annular elastic airbag is damaged. Therefore, the alarm will quickly warn the user, prompting the user to quickly have professional maintenance, thereby greatly improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a preferred embodiment of a fire extinguisher valve that is easy to assemble provided by the present invention;

[0019] Figure 2 for Figure 1 The internal structure diagram of the valve seat shown in cross section;

[0020] Figure 3 for Figure 2 The structural diagram of the valve seat cross section is shown;

[0021] Figure 4 for Figure 3 The partial enlarged structural diagram of the valve seat shown in FIG.

[0022] Figure 5 for Figure 2 Schematic diagram of the structure of the connection between the annular elastic airbag and the micro air pressure sensor;

[0023] Figure 6 for Figure 2 Schematic diagram of the structure of the connection between the piston ring and the pressing rod.

[0024] Numbers in the figure: 1. Valve seat; 11. Fixed arm; 12. Rotating handle; 2. Internal pipe; 3. External threaded cylinder; 3a. Inner ring air storage chamber; 3b. Outer ring groove; 3c. Docking hole; 3d. Through hole; 3e. Mounting through hole; 31. Limiting ring; 4. Annular elastic airbag; 41. Docking pipe; 5. Miniature air pressure sensor; 6. Alarm; 7. Air guide tube; 8. Piston ring; 9. Pressing rod; 91. Butt ring. DETAILED DESCRIPTION

[0025] 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.

[0026] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0027] See also Figures 1 to 6 The embodiment of the present invention provides a fire extinguisher valve that is easy to assemble. The fire extinguisher valve that is easy to assemble includes a valve seat 1, an annular elastic airbag 4, a micro air pressure sensor 5 and an alarm 6.

[0028] In the embodiments of the present invention, please refer to Figures 1 to 6 , a fixed arm 11 and a rotatable handle 12 are fixedly mounted on the valve seat 1, and an internal pipe 2 and an external threaded barrel 3 are fixedly mounted on the bottom of the valve seat 1, and the external threaded barrel 3 is located outside the internal pipe 2;

[0029] An inner ring air storage chamber 3a is defined in the externally threaded barrel 3, and an annular elastic airbag 4 is installed on the outer barrel wall of the externally threaded barrel 3 close to the valve seat 1, and the inner ring air storage chamber 3a and the annular elastic airbag 4 are communicated with each other. Specifically, an outer ring groove 3b is defined on the outer barrel wall of the externally threaded barrel 3 close to the valve seat 1, and the annular elastic airbag 4 is sleeved in the outer ring groove 3b, and the inner ring wall of the annular elastic airbag 4 is fixedly connected to the groove wall of the outer ring groove 3b, and a plurality of annularly distributed docking holes 3c that are communicated with the inner ring air storage chamber 3a are defined in the outer ring groove 3b, and a plurality of annularly distributed docking pipes 41 are fixedly installed on the inner barrel wall of the annular elastic airbag 4, and the docking pipes 41 are inserted one by one into the corresponding docking holes 3c and fixedly connected to the docking holes 3c;

[0030] A sliding piston ring 8 is installed in the inner ring air storage chamber 3a, and a plurality of annularly distributed pressing rods 9 are fixedly installed at the bottom of the piston ring 8. The bottom rod head of the pressing rod 9 passes through the through hole 3d opened at the bottom of the external threaded tube 3 and is fixedly mounted with abutment ring 91.

[0031] It should be noted that: when installing the valve, the external threaded barrel 3 at the bottom of the valve seat 1 is threadedly connected to the threaded interface of the fire extinguisher cylinder. During this process, the abutting ring 91 gradually abuts against the inner bottom edge of the threaded interface of the fire extinguisher cylinder. As the threads of the external threaded barrel 3 and the threaded interface of the fire extinguisher cylinder are screwed in, the abutting ring 91 pushes the piston ring 8 through the pressing rod 9 to drive the gas in the inner ring gas storage chamber 3a to be discharged from the docking pipe 41 to the annular elastic airbag 4. Therefore,

[0032] The annular elastic airbag 4 expands rapidly and fills the gap between the external threaded barrel 3 and the threaded interface of the fire extinguisher cylinder, which greatly improves the stability and sealing of the connection between the external threaded barrel 3 and the threaded interface of the fire extinguisher cylinder. The expanded annular elastic airbag 4 is an elastic structure, which eliminates the hidden danger of failure of the connection between the valve and the fire extinguisher cylinder due to vibration of the fire extinguisher cylinder or the valve. Therefore, efficient sealing can be achieved without additional sealing parts, simplifying the assembly steps.

[0033] Furthermore, a limit ring 31 is fixedly installed on the inner wall of the inner ring air storage cavity 3a near the top, and the limit ring 31 is located below the docking hole 3c to prevent the piston ring 8 from sliding above the docking hole 3c.

[0034] The annular elastic airbag 4 is made of corrosion-resistant and aging-resistant materials (such as fluororubber), and an anti-aging coating is applied on the surface of the annular elastic airbag 4 to extend its service life.

[0035] In the embodiments of the present invention, please refer to Figures 1 to 6A miniature air pressure sensor 5 for detecting the air pressure of the annular elastic airbag 4 is installed on the valve seat 1, and an electrically connected alarm 6 is installed on the miniature air pressure sensor 5. Specifically, an air guide tube 7 is installed on the annular elastic airbag 4, and the air guide tube 7 passes through the mounting through hole 3e opened in the valve seat 1 and is connected to the detection silicon film in the miniature air pressure sensor 5.

[0036] It should be noted that: when the annular elastic airbag 4 is rapidly inflated, part of the gas acts on the detection silicon film in the micro air pressure sensor 5 through the air duct 7. If the micro air pressure sensor 5 shows unstable pressure or the pressure value is lower than the predetermined value range, it means that the annular elastic airbag 4 is damaged. Therefore, the alarm 6 issues a rapid warning, prompting the user to quickly have professional maintenance performed, thereby greatly improving safety.

[0037] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0038] 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 extinguisher valve that is easy to assemble, comprising a valve seat (1), wherein an internal pipe (2) and an external threaded barrel (3) are fixedly mounted on the bottom of the valve seat (1), and the external threaded barrel (3) is located outside the internal pipe (2), and is characterized in that: An inner ring air storage cavity (3a) is provided in the externally threaded barrel (3), and an annular elastic air bag (4) is installed on the outer barrel wall of the externally threaded barrel (3) close to the valve seat (1), and the inner ring air storage cavity (3a) and the annular elastic air bag (4) are communicated with each other; A slidingly connected piston ring (8) is installed in the inner ring air storage cavity (3a), and a plurality of annularly distributed pressing rods (9) are fixedly installed on the bottom of the piston ring (8); A micro air pressure sensor (5) for detecting the air pressure of the annular elastic airbag (4) is installed on the valve seat (1), and an electrically connected alarm (6) is installed on the micro air pressure sensor (5).

2. The fire extinguisher valve that is easy to assemble according to claim 1, characterized in that: An outer ring groove (3b) is formed on the outer cylinder wall of the external threaded cylinder (3) near the valve seat (1), the annular elastic airbag (4) is sleeved in the outer ring groove (3b), and the inner ring wall of the annular elastic airbag (4) is fixedly connected to the groove wall of the outer ring groove (3b).

3. The fire extinguisher valve that is easy to assemble according to claim 2, characterized in that: The outer ring groove (3b) is provided with a plurality of annularly distributed docking holes (3c) that are in communication with the inner ring air storage cavity (3a); a plurality of annularly distributed docking tubes (41) are fixedly mounted on the inner bag wall of the annular elastic airbag (4), and the docking tubes (41) are inserted into the corresponding docking holes (3c) one by one and fixedly connected to the docking holes (3c).

4. The fire extinguisher valve that is easy to assemble according to claim 1, characterized in that: The bottom rod head of the pressing rod (9) passes through a through hole (3d) opened at the bottom of the external threaded barrel (3) and is fixedly provided with an abutment ring (91).

5. The fire extinguisher valve that is easy to assemble according to claim 1, characterized in that: An air guide tube (7) is installed on the annular elastic airbag (4), and the air guide tube (7) passes through the installation through hole (3e) opened in the valve seat (1) and is connected to the detection silicon film in the micro air pressure sensor (5).

6. The fire extinguisher valve that is easy to assemble according to claim 3, characterized in that: A limiting ring (31) is fixedly mounted on the inner wall of the inner ring air storage cavity (3a) near the top, and the limiting ring (31) is located below the docking hole (3c).

7. The fire extinguisher valve that is easy to assemble according to claim 1, characterized in that: A fixedly connected fixed arm (11) and a rotatably connected rotating handle (12) are mounted on the valve seat (1).

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