An alarm device

Abstract

The present invention discloses an alarm device, which relates to the technical field of fire alarm equipment. The alarm device, through the arrangement of an air intake tray and a plurality of gas transmission pipelines, can connect the plurality of gas transmission pipelines to a plurality of points to be tested through hoses during installation, and when the fan is driven to operate, the gas at the plurality of points to be tested can be extracted to a detection module, and when the gas value is detected to be excessive, an alarm can be issued in time and the power supply can be cut off, thereby achieving real-time monitoring of the interior of the room while improving the timeliness and range of monitoring, and ensuring the use effect and safety of the device.

Description

Technical Field

[0001] The invention relates to the technical field of fire alarm equipment, in particular to an alarm device. Background Art

[0002] A fire alarm is a device used to promptly identify a fire and sound an alarm. It is usually composed of multiple components, including a temperature sensor, a smoke sensor, a host, and a sound and flash alarm. It can detect temperature, smoke and other information in the environment, and trigger a sound and flash alarm to remind people to take measures to prevent the spread of fire.

[0003] Referring to the Chinese patent, application number: "A fault alarm device" with the application number "202310361088.9", this patent solves the problem that although the existing smoke alarm can sense the surrounding smoke in time, it cannot directly locate the fire source. Although the combination of a smoke alarm and a camera can solve this problem, due to privacy issues, most people are reluctant to install fire detection cameras in private areas, so they cannot be managed in a unified manner. First of all, the device is usually installed on the top of a single room, which limits the detection range. In the monitoring process, the smoke alarm realizes the alarm function by detecting smoke after the fire, resulting in the inability to detect overload and burning inside the line tube, and the timeliness of detection is affected. In this regard, we propose an alarm device to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an alarm device that solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an alarm device, including a body and a detection module, an air intake disc frame is fixed at the bottom of the body, and multiple sections of air transmission pipelines are connected to the outside of the air intake disc frame;

[0006] The ends of the multiple gas pipelines located inside the air intake tray are fixed with connecting pipelines and connected to the detection module through the connecting pipelines, and the ends of the multiple gas pipelines away from the connecting pipelines are respectively connected to multiple points to be tested;

[0007] A driving fan is connected between the multiple sections of the connecting pipeline and the detection module, and is used to pump the gas at the point to be tested to the detection module for detection through the cooperation of the multiple sections of the connecting pipeline and the gas transmission pipeline.

[0008] Preferably, cotton pulling plates are slidably inserted into the interiors of multiple sections of the gas pipeline.

[0009] Preferably, the air intake disc is connected to the air intake end of the driving fan, and a plurality of air intake holes are provided at the bottom of the air intake disc. A cleaning assembly is provided inside the plurality of air intake holes for sealing and cleaning the inside of the air intake holes.

[0010] Preferably, the cleaning assembly includes a positioning frame, and there are multiple positioning frames and they are respectively fixed inside the air intake disc frame, and the installation positions of the multiple air intake disc frames are respectively located directly above the corresponding air intake holes, and a cleaning sealing piece is slidably installed inside the air intake hole, and a transmission inner slide rod is fixed at the center position of the top surface of the cleaning sealing piece, and a positioning outer sleeve rod is slidably sleeved on the end of the transmission inner slide rod, and a support spring is fixed between the end of the transmission inner slide rod and the corresponding inside of the positioning outer sleeve rod, and the positioning outer sleeve rod is fixedly connected to the positioning frame.

[0011] Preferably, a filter assembly is provided inside the air intake disc rack for filtering dust contained in the extracted air.

[0012] Preferably, the filter assembly comprises a positioning disc frame, the positioning disc frame is fixed inside the air intake disc frame, and a filter screen is fixed inside the positioning disc frame.

[0013] Preferably, a cleaning shaft is rotatably installed inside the air intake disc frame, one end of the cleaning shaft is fixedly sleeved with a transmission blade, the other end of the cleaning shaft passes through the filter mesh plate, and a cleaning brush is fixed to the passed end, the cleaning brush is in contact with the bottom of the filter mesh plate, and is used to clean dust adhered to the surface of the filter mesh plate.

[0014] Preferably, a fixed plate frame is fixed inside the air intake disc frame, and the cleaning shaft is rotatably installed inside the fixed plate frame.

[0015] Preferably, a positioning ring frame is fixed inside the body, the positioning ring frame is hollow and interconnected with the air inlet end of the driving fan, the multiple sections of the connecting pipeline are connected to the positioning ring frame, and the air outlet end of the driving fan is connected to the detection module.

[0016] Preferably, sealing ends are installed between the multiple sections of the gas pipelines and the corresponding connecting pipelines.

[0017] The present invention provides an alarm device. Compared with the prior art, it has the following beneficial effects:

[0018] (1) The alarm device, through the arrangement of an air intake tray and a plurality of gas pipelines, can connect the plurality of gas pipelines to a plurality of test points through hoses during installation. When the fan is driven to operate, the gas at the plurality of test points can be extracted to the detection module. When the gas value detected exceeds the standard, an alarm can be issued in time and the power supply can be cut off, thereby realizing real-time monitoring of the interior of the room and improving the timeliness and range of monitoring, thereby ensuring the use effect and safety of the device.

[0019] (2) The alarm device has pull-out cotton plates inserted into the interior of multiple sections of the gas pipeline. When the detection module detects smoke, it will cut off the power supply in time. At this time, by pulling out the pull-out cotton plates inside the gas pipeline, it can be judged based on the smell that there is a problem with the specific pipeline, eliminating the need for professionals to test the entire circuit, effectively improving the judgment of professionals and enhancing the convenience of subsequent maintenance.

[0020] (3) The alarm device, through the setting of the cleaning component, the cleaning sealing piece can move up when under pressure and squeeze the support spring through the transmission inner slide rod. When the equipment stops running, the cleaning sealing piece can drive the support spring to reset and seal the air inlet to ensure the sealing effect. While moving back and forth, it can also prevent dust from adhering to the inside of the air inlet and affecting the air intake effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-section structure;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of point A;

[0024] Figure 4 It is a schematic diagram of the structure of the gas transmission pipeline and the connecting pipeline of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the air intake tray of the present invention;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of point B in the middle;

[0027] Figure 7 It is a cross-sectional view of the air intake tray and a schematic diagram of the cleaning assembly structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the front view of the section of the air intake disc frame and the positioning ring frame of the present invention.

[0029] In the figure: 1. body; 101. positioning plate; 102. assembly hole; 2. air intake disc frame; 201. mounting hole; 3. gas pipeline; 301. sealing end; 302. connecting pipeline; 4. pulling cotton plate; 5. detection module; 6. air intake hole; 7. positioning disc frame; 701. filter screen; 8. positioning frame; 801. positioning outer sleeve rod; 8011. support spring; 802. transmission inner slide rod; 803. cleaning sealing piece; 9. positioning ring frame; 10. driving fan; 1001. fixing frame; 11. cleaning shaft rod; 1101. cleaning brush; 1102. transmission blade; 1103. fixing plate frame. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 8 The present invention provides two technical solutions, which specifically include the following embodiments:

[0032] Example 1: Reference Figure 1-Figure 4 An alarm device includes a body 1 and a detection module 5. A positioning plate 101 is fixed on the top surface of the body 1, and a plurality of assembly holes 102 are provided inside the positioning plate 101. An air intake rack 2 is fixed on the bottom of the body 1, and a plurality of gas transmission pipelines 3 are connected to the outer side of the air intake rack 2. The detection module 5 is an existing device, specifically a gas detection sensor and an alarm mechanism. The detection module 5 has a built-in PLC control module for receiving a signal transmitted by the gas detection sensor for alarming, and the PLC control module is connected to a circuit control terminal, which can cut off the circuit in time to reduce losses and ensure safety.

[0033] The ends of the multi-section gas pipeline 3 located inside the air intake disc 2 are fixed with connecting pipelines 302, and are connected to the detection module 5 through the connecting pipelines 302. The ends of the multi-section gas pipeline 3 away from the connecting pipeline 302 are respectively connected to multiple test points, which are line pipes to be tested, specifically a kind of pre-buried open wire or concealed wire. There are two connection methods. One is to connect to the junction box position of the wire pipe through a hose, and the end of the hose stays at the junction box position to extract the gas inside the wire pipe, and the other end is connected to the gas pipeline 3; the other is to pass the hose through the wire pipe at the same time as the wire during the threading process, and connect one end of the hose to the corresponding gas pipeline Road 3, the other end is a plugging type, a plurality of air holes are opened inside the hose, through the air holes located inside the wire pipe, the gas inside the wire pipe can be extracted and detected, the wire pipe is a wire pipe reserved during house construction, a plurality of mounting holes 201 are opened inside the air intake tray 2, and multiple sections of gas pipelines 3 are respectively fixed inside the mounting holes 201, and gas is extracted through a plurality of hoses arranged inside the wire pipe. Compared with traditional detection and alarm devices, it can detect in time at the initial stage of line combustion, and perform alarm and power-off operations, thereby reducing property damage and improving safety performance. The hose is selected from an existing rubber hose or PE hose, which will not be described here;

[0034] Specifically, a driving fan 10 is connected between the multi-section connecting pipeline 302 and the detection module 5, which is used to draw the gas at the test point to the detection module 5 for detection through the cooperation of the multi-section connecting pipeline 302 and the gas supply pipeline 3. When the driving fan 10 is running, it can generate negative pressure in the hose through the multi-section connecting pipeline 302 and the gas supply pipeline 3, and extract the air inside the wire pipe, and then transport it to the detection module 5 for detection.

[0035] For further reference, Figure 2-Figure 3 , a pull-out cotton plate 4 is slidably inserted into the interior of the multiple sections of the gas pipeline 3. When the pull-out cotton plate 4 is detachable inside the gas pipeline 3, the power supply will be cut off in time when the detection module 5 detects smoke. At this time, by pulling out the pull-out cotton plate 4 inside the gas pipeline 3, it is possible to judge that there is a problem with the specific pipeline based on the smell, eliminating the need for professionals to test the entire circuit and improving the convenience of processing. Common wire sheath materials are mainly PVC, PE or rubber synthesis. Therefore, when burning or smoke appears, pungent gas will be generated. At this time, the pull-out cotton plate 4 can effectively improve the judgment of professionals.

[0036] Specifically, refer to Figure 2 , Figure 5The air intake disc frame 2 is connected to the air intake end of the driving fan 10. A plurality of air intake holes 6 are provided at the bottom of the air intake disc frame 2. A cleaning component is provided inside the plurality of air intake holes 6 for sealing and cleaning the inside of the air intake holes 6. When the driving fan 10 is running, a negative pressure can be generated inside the air intake disc frame 2 through the air intake end, and external air is extracted through the cooperation of the plurality of air intake holes 6, and then transported to the inside of the detection module 5, thereby improving the detection range and being able to effectively register household appliances, such as air conditioners, refrigerators and other high-power appliances.

[0037] For further reference, Figure 3 , Figure 5 , Figure 6 The cleaning assembly includes a positioning frame 8, and there are multiple positioning frames 8, which are respectively fixed inside the air intake disc frame 2. The installation positions of the multiple air intake disc frames 2 are respectively located directly above the corresponding air intake holes 6. A cleaning plugging piece 803 is slidably installed inside the air intake hole 6. A transmission inner slide bar 802 is fixed at the center position of the top surface of the cleaning plugging piece 803. The end of the transmission inner slide bar 802 is slidably sleeved with a positioning outer sleeve rod 801, and a support spring 8011 is fixed between the end of the transmission inner slide bar 802 and the corresponding inner positioning outer sleeve rod 801. The positioning outer sleeve rod 801 is fixedly connected to the positioning frame 8, and the fan 10 is driven to run. When the air intake rack 2 is under pressure, the cleaning and sealing pieces 803 inside the multiple air intake holes 6 can be pressed and moved upward inside the air intake hole 6, thereby driving the corresponding transmission inner slide rod 802 to retract into the corresponding positioning outer sleeve rod 801, squeezing the supporting spring 8011 until the cleaning and sealing piece 803 is separated from the air intake hole 6. At this time, the external air can enter the air intake rack 2 through the air intake hole 6. When the equipment stops running, the cleaning and sealing piece 803 can drive the supporting spring 8011 to reset and block the air intake hole 6. At the same time, while moving back and forth, it can also prevent dust from adhering to the inside of the air intake hole 6 and affecting the air intake effect.

[0038] Furthermore, a filter assembly is provided inside the air intake rack 2 for filtering dust contained in the extracted air. When the air intake rack 2 extracts external air by driving the fan 10, the dust in the air can be filtered through the filter assembly to avoid affecting the detection effect of the detection module 5. A fixing frame 1001 is fixedly installed on the outside of the driving fan 10, and is fixed to the inside of the machine body 1 through the fixing frame 1001.

[0039] Specifically, refer to Figure 2 The filter assembly includes a positioning disc frame 7, which is fixed inside the air intake disc frame 2. A filter screen 701 is fixed inside the positioning disc frame 7. When the gas passes through the filter screen 701 installed inside the positioning disc frame 7, the dust can be filtered through the filter screen 701 to ensure the detection accuracy.

[0040] For further reference, Figure 2-Figure 7 A cleaning shaft 11 is rotatably installed inside the air intake disc frame 2, one end of the cleaning shaft 11 is fixedly sleeved with a transmission blade 1102, the other end of the cleaning shaft 11 passes through the filter screen plate 701, and a cleaning brush 1101 is fixed to the passed end, the cleaning brush 1101 is in contact with the bottom of the filter screen plate 701, and is used to clean the dust adhered to the surface of the filter screen plate 701. When the air is discharged into the detection module 5 through the air intake disc frame 2, the cleaning shaft 11 can be driven to rotate through the transmission blade 1102. The operation of the cleaning shaft 11 can drive the cleaning brush 1101 at the end to run, so as to clean the dust adhered to the bottom of the filter screen plate 701.

[0041] Specifically, refer to Figure 7 A fixed plate frame 1103 is fixed inside the air intake disc frame 2, and the cleaning shaft rod 11 is rotatably installed inside the fixed plate frame 1103.

[0042] Specifically, refer to Figure 5 , Figure 8 A positioning ring frame 9 is fixed inside the body 1. The positioning ring frame 9 is hollow and interconnected with the air inlet end of the driving fan 10. The multiple connecting pipes 302 are all connected to the positioning ring frame 9. The air outlet end of the driving fan 10 is connected to the detection module 5. When the driving fan 10 is running, the multiple connecting pipes 302 can generate negative pressure through the positioning ring frame 9 to draw air to the detection module 5.

[0043] Specifically, refer to Figure 2 , Figure 3 A sealing end 301 is installed between the multi-section gas transmission pipeline 3 and the corresponding connecting pipeline 302.

[0044] Embodiment 2: Based on Embodiment 1, refer to Figure 1-Figure 4 An alarm device includes a body 1 and a detection module 5. A positioning plate 101 is fixed on the top surface of the body 1, and a plurality of assembly holes 102 are provided inside the positioning plate 101. An air intake rack 2 is fixed on the bottom of the body 1, and a plurality of gas transmission pipelines 3 are connected to the outer side of the air intake rack 2. The detection module 5 is an existing device, specifically a gas detection sensor and an alarm mechanism. The detection module 5 has a built-in PLC control module for receiving a signal transmitted by the gas detection sensor for alarming, and the PLC control module is connected to a circuit control terminal, which can cut off the circuit in time to reduce losses and ensure safety.

[0045] The ends of the multi-section gas pipeline 3 located inside the air intake disc 2 are fixed with connecting pipelines 302, and are connected to the detection module 5 through the connecting pipelines 302. The ends of the multi-section gas pipeline 3 away from the connecting pipeline 302 are respectively connected to multiple test points, which are line pipelines to be tested, specifically a kind of pre-buried open wire or concealed wire. There are two connection methods. One is to connect to the junction box position of the wire pipe through a hose, and the end of the hose stays at the junction box position to extract the gas inside the wire pipe, and the other end is connected to the gas pipeline 3; the other is to pass the hose through the wire pipe at the same time as the wire during the threading process. , connect one end of the hose to the corresponding gas pipeline 3, and the other end is a plugging type. A plurality of air holes are provided inside the hose, and the air holes are located inside the wire pipe to realize the detection of the inside of the wire pipe. The wire pipe is a wire pipe reserved during the construction of the house. A plurality of mounting holes 201 are provided inside the air intake tray 2, and multiple sections of gas pipelines 3 are respectively fixed inside the mounting holes 201. Gas is extracted through a plurality of hoses arranged inside the wire pipe. Compared with the traditional detection and alarm devices, it can detect the initial stage of line combustion in time, and perform alarm and power-off operations, thereby reducing property damage and improving safety performance;

[0046] Specifically, a driving fan 10 is connected between the multi-section connecting pipeline 302 and the detection module 5, which is used to draw the gas at the test point to the detection module 5 for detection through the cooperation of the multi-section connecting pipeline 302 and the gas supply pipeline 3. When the driving fan 10 is running, it can generate negative pressure in the hose through the multi-section connecting pipeline 302 and the gas supply pipeline 3, and extract the air inside the wire pipe, and then transport it to the detection module 5 for detection.

[0047] For further reference, Figure 2-Figure 3 , a pull-out cotton plate 4 is slidably inserted into the interior of the multiple sections of the gas pipeline 3. When the pull-out cotton plate 4 is detachable inside the gas pipeline 3, the power supply will be cut off in time when the detection module 5 detects smoke. At this time, by pulling out the pull-out cotton plate 4 inside the gas pipeline 3, it is possible to judge that there is a problem with the specific pipeline based on the smell, eliminating the need for professionals to test the entire circuit and improving the convenience of processing. Common wire sheath materials are mainly PVC, PE or rubber synthesis. Therefore, when burning or smoke appears, pungent gas will be generated. At this time, the pull-out cotton plate 4 can effectively improve the judgment of professionals.

[0048] Specifically, refer to Figure 2 , Figure 5The air intake disc frame 2 is connected to the air intake end of the driving fan 10. A plurality of air intake holes 6 are provided at the bottom of the air intake disc frame 2. A cleaning component is provided inside the plurality of air intake holes 6 for sealing and cleaning the inside of the air intake holes 6. When the driving fan 10 is running, a negative pressure can be generated inside the air intake disc frame 2 through the air intake end, and external air is extracted through the cooperation of the plurality of air intake holes 6, and then transported to the inside of the detection module 5, thereby improving the detection range and being able to effectively register household appliances, such as air conditioners, refrigerators and other high-power appliances.

[0049] For further reference, Figure 3 , Figure 5 , Figure 6 The cleaning assembly includes a positioning frame 8, and there are multiple positioning frames 8, which are respectively fixed inside the air intake disc frame 2. The installation positions of the multiple air intake disc frames 2 are respectively located directly above the corresponding air intake holes 6. A cleaning plugging piece 803 is slidably installed inside the air intake hole 6. A transmission inner slide bar 802 is fixed at the center position of the top surface of the cleaning plugging piece 803. The end of the transmission inner slide bar 802 is slidably sleeved with a positioning outer sleeve rod 801, and a support spring 8011 is fixed between the end of the transmission inner slide bar 802 and the corresponding inner positioning outer sleeve rod 801. The positioning outer sleeve rod 801 is fixedly connected to the positioning frame 8, and the fan 10 is driven to run. When the air intake rack 2 is under pressure, the cleaning and sealing pieces 803 inside the multiple air intake holes 6 can be pressed and moved upward inside the air intake hole 6, thereby driving the corresponding transmission inner slide rod 802 to retract into the corresponding positioning outer sleeve rod 801, squeezing the supporting spring 8011 until the cleaning and sealing piece 803 is separated from the air intake hole 6. At this time, the external air can enter the air intake rack 2 through the air intake hole 6. When the equipment stops running, the cleaning and sealing piece 803 can drive the supporting spring 8011 to reset and block the air intake hole 6. At the same time, while moving back and forth, it can also prevent dust from adhering to the inside of the air intake hole 6 and affecting the air intake effect.

[0050] Specifically, refer to Figure 7 A fixed plate frame 1103 is fixed inside the air intake disc frame 2, and the cleaning shaft rod 11 is rotatably installed inside the fixed plate frame 1103.

[0051] Specifically, refer to Figure 5 , Figure 8 A positioning ring frame 9 is fixed inside the body 1. The positioning ring frame 9 is hollow and interconnected with the air inlet end of the driving fan 10. The multiple connecting pipes 302 are all connected to the positioning ring frame 9. The air outlet end of the driving fan 10 is connected to the detection module 5. When the driving fan 10 is running, the multiple connecting pipes 302 can generate negative pressure through the positioning ring frame 9 to draw air to the detection module 5.

[0052] Specifically, refer to Figure 2 , Figure 3A sealing end 301 is installed between the multi-section gas transmission pipeline 3 and the corresponding connecting pipeline 302.

[0053] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An alarm device, comprising a body (1) and a detection module (5), characterized in that: An air intake frame (2) is fixed at the bottom of the machine body (1), and a plurality of air supply pipelines (3) are connected to the outside of the air intake frame (2); Ends of the multiple sections of the gas transmission pipeline (3) located inside the gas intake disc frame (2) are all fixed with connecting pipelines (302) and are connected to the detection module (5) through the connecting pipelines (302); ends of the multiple sections of the gas transmission pipeline (3) away from the connecting pipelines (302) are respectively connected to a plurality of points to be tested; A driving fan (10) is connected between the multiple sections of the connecting pipeline (302) and the detection module (5), and is used to pump gas at the point to be tested to the detection module (5) for detection through the cooperation of the multiple sections of the connecting pipeline (302) and the gas transmission pipeline (3); The air intake disc frame (2) is connected to the air intake end of the driving fan (10), and a plurality of air intake holes (6) are provided at the bottom of the air intake disc frame (2), and a cleaning component is provided inside each of the plurality of air intake holes (6) for sealing and cleaning the inside of the air intake holes (6); The cleaning assembly comprises a positioning frame (8), wherein the positioning frames (8) are provided in plurality and are respectively fixed inside the air intake disc frame (2), and the installation positions of the plurality of air intake disc frames (2) are respectively located directly above the corresponding air intake holes (6), and a cleaning plugging piece (803) is slidably installed inside the air intake hole (6), and a transmission inner slide bar (802) is fixed at the center position of the top surface of the cleaning plugging piece (803), and a positioning outer sleeve rod (801) is slidably sleeved at the end of the transmission inner slide bar (802), and a support spring (8011) is fixed between the end of the transmission inner slide bar (802) and the inside of the corresponding positioning outer sleeve rod (801), and the positioning outer sleeve rod (801) is fixedly connected to the positioning frame (8); The air intake disc frame (2) is provided with a filter assembly inside, which is used to filter the dust contained in the extracted air; The filter assembly comprises a positioning disc frame (7), the positioning disc frame (7) is fixed inside the air intake disc frame (2), and a filter screen plate (701) is fixed inside the positioning disc frame (7); A cleaning shaft (11) is rotatably mounted inside the air intake disc frame (2), one end of the cleaning shaft (11) is fixedly sleeved with a transmission blade (1102), the other end of the cleaning shaft (11) passes through the filter screen plate (701), and a cleaning brush (1101) is fixed to the passed end, the cleaning brush (1101) and the bottom of the filter screen plate (701) are mutually fitted, and are used to clean dust adhered to the surface of the filter screen plate (701); A fixed plate frame (1103) is fixed inside the air intake disc frame (2), and the cleaning shaft rod (11) is rotatably mounted inside the fixed plate frame (1103); A positioning ring frame (9) is fixed inside the machine body (1); the positioning ring frame (9) is hollow and is interconnected with the air inlet end of the driving fan (10); multiple sections of the connecting pipeline (302) are connected to the positioning ring frame (9); and the air outlet end of the driving fan (10) is connected to the detection module (5).

2. An alarm device according to claim 1, characterized in that: Cotton drawing plates (4) are slidably inserted into the interiors of the multiple sections of the gas delivery pipeline (3).

3. An alarm device according to claim 1, characterized in that: Sealing ends (301) are installed between the multiple sections of the gas transmission pipeline (3) and the corresponding connecting pipeline (302).

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