Gas monitoring alarm device

Abstract

The utility model discloses a kind of gas monitoring alarm equipment, gas sensor in gas monitoring alarm equipment can be replaced separately, avoid after sensor damage, increase cost to carry out overall replacement to gas alarm equipment. Gas monitoring alarm equipment includes alarm body and gas sensor. Alarm body includes shell and alarm speaker;The alarm speaker is arranged on shell, for receiving the alarm signal of gas sensor and alarm;Combination slot is provided on the shell. Gas sensor is used to monitor gas concentration, and according to gas concentration output alarm signal;Combination insertion rod is provided on the gas sensor, the combination insertion rod is matched with the combination slot;The combination insertion rod of the gas sensor is inserted into the combination slot, and the gas sensor is installed on the shell, and make the gas sensor with the alarm speaker electric connection.

Description

Technical Field

[0001] This utility model belongs to the field of gas safety monitoring technology, specifically relating to a gas monitoring and alarm device. Background Technology

[0002] With the widespread use of gas in homes and industries, gas leaks have led to frequent safety accidents, posing a serious threat to personal and property safety, and gas safety issues have received increasing attention.

[0003] Existing gas alarm devices typically use fixed sensors and integrated structures. The sensors and alarms are highly integrated, and when the sensors are damaged, the entire gas alarm device needs to be replaced, which is costly and complicated. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the existing technology by providing a gas monitoring and alarm device that allows for the individual replacement of the gas sensor in the gas monitoring and alarm device, thus avoiding the increased cost of replacing the entire gas alarm device after the sensor is damaged.

[0005] In a first aspect, this utility model provides a gas monitoring and alarm device, which includes an alarm body and a gas sensor. The alarm body includes a housing and an alarm speaker; the alarm speaker is disposed on the housing and is used to receive alarm signals from the gas sensor and trigger an alarm; the housing is provided with a combination slot. The gas sensor is used to monitor the gas concentration and output an alarm signal according to the gas concentration; the gas sensor is provided with a combination plug, which is adapted to the combination slot; after the combination plug of the gas sensor is inserted into the combination slot, the gas sensor is installed on the housing, and the gas sensor is electrically connected to the alarm speaker.

[0006] In some embodiments, a sensor socket is provided in the housing at a position corresponding to the gas sensor, and the sensor socket is electrically connected to the alarm speaker; a connecting plug is provided on the side of the gas sensor facing the housing, and the connecting plug is adapted to the sensor socket; when the combined plug of the gas sensor is inserted into the combined slot, it drives the connecting plug of the gas sensor to be inserted into the sensor socket and electrically connected to the sensor socket.

[0007] In some embodiments, a mounting groove is provided on the outside of the sensor socket on the housing. The gas monitoring and alarm device also includes a protective vent cover; after the gas sensor is installed on the housing, the protective vent cover is inserted into the mounting groove and fastened to the outside of the gas sensor on the housing to protect the gas sensor.

[0008] In some embodiments, the gas monitoring and alarm device further includes a protective locking component. The protective locking component is fixed to the outer side of the protective vent cover on the housing, and a retractable locking rod is provided on the side of the protective locking component facing the mounting groove; a locking hole is provided on the side wall of the protective vent cover corresponding to the locking rod, and the locking rod can be inserted into the locking hole after it extends to lock the protective vent cover.

[0009] In some embodiments, the number of protective locking members is two, and the two protective locking members are respectively disposed on opposite sides of the protective ventilator. The number of locking holes on the protective ventilator is also two, and the two locking holes are respectively disposed in one-to-one correspondence with the two protective locking members.

[0010] In some embodiments, the alarm speaker is detachably mounted on the housing and electrically connected to the sensor socket after being mounted on the housing.

[0011] In some embodiments, a combination buckle plate is provided on the housing at the position corresponding to the alarm speaker. A mounting hole is formed in the center of the combination buckle plate, allowing the connection end of the alarm speaker to pass through. A rotational gap is formed between the combination buckle plate and the housing. An embedding groove is formed on the side wall of the mounting hole. A fixing block is provided on the outer side of the connection end of the alarm speaker. The fixing block can pass through the embedding groove and rotate within the rotational gap. After the fixing block passes through the embedding groove and rotates within the rotational gap, the combination buckle plate can engage the fixing block between the housing and the combination buckle plate to mount the alarm speaker on the housing.

[0012] In some embodiments, an elastic clamping member is provided on the outer side of the combined buckle plate. After the connecting end of the alarm speaker is snapped onto the combined buckle plate, it abuts against the elastic clamping member, which is used to press the fixing block firmly onto the combined buckle plate.

[0013] In some embodiments, there are multiple combination plugs and multiple combination slots, and the multiple combination plugs and multiple combination slots are arranged in a one-to-one correspondence.

[0014] In some embodiments, a fixing protrusion is provided on the outer side of the combined insertion rod, and an elastic sleeve is provided on the inner wall surface of the combined slot.

[0015] Therefore, the gas monitoring and alarm device provided in this embodiment of the utility model, by setting a gas sensor and an alarm speaker, and electrically connecting the gas sensor and the alarm speaker, can trigger the alarm speaker to sound an alarm after the gas sensor outputs an alarm signal. By setting a combination slot on the housing of the alarm body and a combination rod on the gas sensor, the combination rod is adapted to the combination slot. The gas sensor can be installed on or removed from the housing by inserting or removing the combination rod, thus achieving a detachable connection between the gas sensor and the housing, reducing the operational difficulty when replacing the gas sensor. In the event of a damaged gas sensor requiring replacement, the damaged gas sensor can be easily removed and replaced individually, thus avoiding the increased cost of replacing the entire gas alarm device after sensor damage. Attached Figure Description

[0016] Figure 1 : A schematic diagram of a gas monitoring and alarm device provided in an embodiment of this utility model;

[0017] Figures 2-3 : A schematic diagram of a housing provided in an embodiment of this utility model;

[0018] Figure 4 : A structural diagram of a gas sensor provided in an embodiment of this utility model;

[0019] Figure 5 : A structural diagram of a protective locking component provided in an embodiment of this utility model;

[0020] Figure 6 : A structural diagram of an alarm speaker provided in an embodiment of this utility model;

[0021] Figure 7 : A structural diagram of an elastic clamping member provided in an embodiment of this utility model.

[0022] The components are as follows: 1-Alarm body; 2-Mounting slot; 3-Sensor socket; 4-Positioning rod; 5-Combination slot; 6-Gas sensor; 7-Fixing frame; 8-Combination rod; 9-Protective vent cover; 10-First coupler; 11-Fixing sleeve; 12-Compression spring; 13-Compression sleeve; 14-Combination buckle plate; 15-Alarm speaker; 16-Second coupler; 17-Elastic sleeve; 18-Fixing protrusion; 19-Fixing clip; 20-Embedded groove; 21-Mounting box; 22-Equipment cavity; 23-Spring support rod; 24-Moving block; 25-Locking rod; 26-Adjusting block; 27-Circular boss. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] Example 1:

[0025] like Figure 1 As shown in the figure, this utility model embodiment provides a gas monitoring and alarm device, which is applied in the field of gas monitoring.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the gas monitoring and alarm device includes an alarm body 1 and a gas sensor 6. The alarm body 1 includes a housing and an alarm speaker 15; the alarm speaker 15 is mounted on the housing and is used to receive the alarm signal from the gas sensor 6 and trigger an alarm; a combination slot 5 is provided on the housing. The gas sensor 6 is used to monitor the gas concentration and output an alarm signal according to the gas concentration; a combination plug 8 is provided on the gas sensor 6, and the combination plug 8 is adapted to the combination slot 5; after the combination plug 8 of the gas sensor 6 is inserted into the combination slot 5, the gas sensor 6 is installed on the housing, and the gas sensor 6 is electrically connected to the alarm speaker 15.

[0027] For example, the housing can be made of plastic, such as flame-retardant ABS.

[0028] For example, the alarm speaker 15 can be detachably connected to the housing.

[0029] For example, such as Figure 2 and Figure 3 As shown, four positioning rods 4 are provided on the housing. Figure 3 In the case where the housing is placed vertically, the four positioning rods 4 are arranged horizontally. The number of combination slots 5 is equal to the number of positioning rods 4, with one combination slot 5 located in one positioning rod 4.

[0030] For example, such as Figure 4 As shown, the gas sensor 6 has a fixed frame 7. The fixed frame 7 is rectangular in shape, and four positioning rods 4 are respectively set at the four corners of the fixed frame 7.

[0031] The combination rod 8 is adapted to the combination slot 5, meaning that the combination rod 8 can be inserted precisely into the combination slot 5 and remain in a stable position within the combination slot 5. When there are four combination rods 8 and four combination slots 5, the positions of the four combination rods 8 correspond to the positions of the four combination slots 5, allowing the four combination rods 8 to be inserted into the four combination slots 5 simultaneously.

[0032] For example, the diameter of the combination plug 8 is 8mm, and the diameter of the opening of the combination slot 5 is also 8mm.

[0033] With the above setup, inserting the combination rod 8 into the combination slot 5 allows the gas sensor 6 to be installed on the housing; pulling the combination rod 8 out of the combination slot 5 allows the gas sensor 6 to be removed from the housing, thus achieving a detachable connection between the gas sensor 6 and the housing, reducing the operational difficulty when replacing the gas sensor 6; if the gas sensor 6 is damaged and needs to be replaced, the damaged gas sensor 6 can be easily removed and replaced with a new gas sensor 6 separately, thus avoiding the increased cost of replacing the entire gas alarm device after sensor damage.

[0034] After the gas sensor 6 is electrically connected to the alarm speaker 15, the alarm speaker 15 can be activated after the gas sensor 6 outputs an alarm signal.

[0035] Therefore, the gas monitoring and alarm device provided in this embodiment of the utility model, by setting a gas sensor 6 and an alarm speaker 15 and electrically connecting the gas sensor 6 and the alarm speaker 15, can trigger the alarm speaker 15 to sound an alarm after the gas sensor 6 outputs an alarm signal. By setting a combination slot 5 on the housing of the alarm body 1 and a combination plug 8 on the gas sensor 6, the combination plug 8 is adapted to the combination slot 5. The gas sensor 6 can be installed on the housing or removed from the housing by inserting or removing the combination plug 8 into the combination slot 5, thus achieving a detachable connection between the gas sensor 6 and the housing, reducing the operational difficulty when replacing the gas sensor 6. In the event that the gas sensor 6 is damaged and needs to be replaced, the damaged gas sensor 6 can be easily removed and replaced individually, thus avoiding the increased cost of replacing the entire gas alarm device after sensor damage.

[0036] In some embodiments, such as Figure 2 and Figure 3 As shown, a sensor socket 3 is provided in the housing at the position corresponding to the gas sensor 6, and the sensor socket 3 is electrically connected to the alarm speaker 15. A connecting plug is provided on the side of the gas sensor 6 facing the housing, and the connecting plug is compatible with the sensor socket 3. When the combination rod 8 of the gas sensor 6 is inserted into the combination slot 5, it causes the connecting plug of the gas sensor 6 to be inserted into the sensor socket 3 and electrically connected to the sensor socket 3.

[0037] With the above settings, the gas sensor 6 can be installed on the housing while its connector plug is inserted into the sensor socket 3 to achieve electrical connection between the gas sensor 6 and the alarm speaker 15. This reduces the wiring operations when connecting the gas sensor 6 and the alarm speaker 15 and lowers the difficulty of replacing the gas sensor 6.

[0038] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, a mounting groove 2 is provided on the outside of the sensor socket 3 on the housing. The gas monitoring and alarm device also includes a protective vent cover 9; after the gas sensor 6 is installed on the housing, the protective vent cover 9 is inserted into the mounting groove 2 and then fastened to the outside of the gas sensor 6 on the housing to protect the gas sensor 6.

[0039] For example, the edge of the protective vent 9 is adapted to the mounting groove 2 so that the protective vent 9 can be inserted into the mounting groove 2 and fixed.

[0040] With the above settings, after the gas sensor 6 is installed on the housing, the gas sensor 6 can be protected by the protective vent cover 9 to prevent external objects from damaging the gas sensor 6.

[0041] In some embodiments, such as Figure 3 As shown, the gas monitoring and alarm equipment also includes a protective locking component. The protective locking component is fixed to the outside of the protective vent cover 9 on the housing. A retractable locking rod 25 is provided on the side of the protective locking component facing the mounting groove 2. A locking hole is provided on the side wall of the protective vent cover 9 corresponding to the locking rod 25. After the locking rod 25 extends out, it can be inserted into the locking hole to lock the protective vent cover 9.

[0042] For example, the protective locking element is fixed to the outside of the protective vent 9 on the housing.

[0043] For example, before installing the protective ventilator 9, the locking rod 25 is retracted; after installing the protective ventilator 9, the locking rod 25 is extended and inserted into the locking hole of the protective ventilator 9 to fix the position of the protective ventilator 9.

[0044] For example, such as Figure 2 and Figure 5 As shown, the protective locking component includes a mounting box 21, an equipment cavity 22, a spring support rod 23, a movable block 24, a locking rod 25, and an adjusting block 26. The mounting box 21 is fixed to the outside of the protective vent hood 9 on the housing. The equipment cavity 22 is formed inside the mounting box 21. The spring support rod 23 is fixed inside the equipment cavity 22, and the movable block 24 is fixed to one end of the spring support rod 23. The locking rod 25 is fixed to the end of the movable block 24 away from the spring support rod 23. The adjusting block 26 is fixed to the movable block 24. The mounting box 21 has a groove for the adjusting block 26 to pass through, and a portion of the adjusting block 26 extends outward from the mounting box 21 after passing through the groove. By moving the adjusting block 26 within the groove, the operator can move the movable block 24, and the movable block 24 can cause the locking rod 25 to extend or retract relative to the mounting box 21.

[0045] When the protective ventilator 9 is inserted into the mounting slot 2, the adjusting block 26 is pulled outward (towards the side away from the protective ventilator 9). The adjusting block 26 causes the moving block 24 to move outward in the equipment cavity 22, compressing the spring support rod 23. When the moving block 24 moves, the locking rod 25 retracts into the mounting box 21. After the protective ventilator 9 is inserted into the mounting slot 2, the adjusting block 26 is released. Under the deformation elastic force of the spring support rod 23, the moving block 24 rebounds and causes the locking rod 25 to extend. The locking rod 25 is inserted into the locking hole of the protective ventilator 9 to lock and fix the protective ventilator 9.

[0046] With the above settings, the protective ventilator 9 can be locked and fixed after installation to prevent it from falling off.

[0047] In some examples, such as Figure 1 and Figure 3 As shown, there are two protective locking components, which are respectively located on opposite sides of the protective ventilator 9. The protective ventilator 9 also has two locking holes, each corresponding to one of the two protective locking components.

[0048] With the above settings, the protective ventilator 9 can be locked and fixed on both sides at the same time, increasing the fixing strength of the protective ventilator 9.

[0049] In some embodiments, such as Figure 1 and Figure 2 As shown, the alarm speaker 15 is detachably mounted on the housing, and after being mounted on the housing, the alarm speaker 15 is electrically connected to the sensor socket 3.

[0050] For example, such as Figure 3 As shown, a first coupler 10 is provided on the upper part of the housing, and the first coupler 10 is electrically connected to the sensor socket 3. For example... Figure 6 As shown, a second coupler 16 is provided on the alarm speaker 15, and the first coupler 10 is plugged into the second coupler 16.

[0051] After the alarm speaker 15 is installed on the housing, the first coupler 10 and the second coupler 16 are plugged in and electrically connected, so that the alarm speaker 15 is electrically connected to the gas sensor 6 through the sensor socket 3.

[0052] The above settings allow for quick replacement of the alarm speaker 15.

[0053] In some embodiments, such as Figure 2 and Figure 3As shown, a combination fastener 14 is provided on the housing at the position corresponding to the alarm speaker 15. A mounting hole is provided in the center of the combination fastener 14, allowing the connecting end of the alarm speaker 15 to pass through. A rotational gap is formed between the combination fastener 14 and the housing; an embedding groove 20 is provided on the side wall of the mounting hole. A fixing block 19 is provided on the outer side of the connecting end of the alarm speaker 15. The fixing block 19 can pass through the embedding groove 20 and rotate within the rotational gap. After the fixing block 19 passes through the embedding groove 20 and rotates within the rotational gap, the combination fastener 14 can engage the fixing block 19 between the housing and the combination fastener 14, thereby mounting the alarm speaker 15 on the housing.

[0054] For example, such as Figure 3 As shown, the combined buckle plate 14 can be a hollow cylinder, with mounting holes on its top surface. The bottom of the combined buckle plate 14 can be fixed to the outside of the first coupler 10 on the housing using screws or other connectors. The space between the combined buckle plate 14 and the housing forms the aforementioned rotational clearance.

[0055] For example, such as Figure 6 As shown, the connecting end of the alarm speaker 15 is cylindrical, and the second coupler 16 is disposed on the end face of the connecting end of the alarm speaker 15. The cylindrical connecting end of the alarm speaker 15 can pass through the mounting hole in the middle of the combination buckle plate 14 and extend into the rotation gap. The fixing block 19 is disposed on the outside of the cylindrical connecting end of the alarm speaker 15.

[0056] For example, there are two fixing blocks 19 and two embedding slots 20, and the two fixing blocks 19 and the two embedding slots 20 are set in a one-to-one correspondence.

[0057] For example, if the shape of the fixing block 19 is rectangular, then the shape of the embedding slot 20 is also rectangular.

[0058] The process of installing the alarm speaker 15 on the housing is as follows: Align the fixing block 19 of the connecting end of the alarm speaker 15 with the embedding groove 20, so that the connecting end of the alarm speaker 15 passes through the mounting hole on the combination buckle plate 14 and extends into the rotation gap, while driving the fixing block 19 through the embedding groove 20 and extending into the rotation gap, rotate the alarm speaker 15 to drive the fixing block 19 to rotate to the position of the combination buckle plate 14 where the embedding groove 20 is not opened, thereby locking the fixing block 19 between the housing and the combination buckle plate 14, so as to install the alarm speaker 15 on the housing.

[0059] Understandably, the process of removing the alarm speaker 15 from the housing is the reverse of the process described above.

[0060] With the above settings, the alarm speaker 15 can be quickly installed and removed from the housing by rotating the alarm speaker 15.

[0061] In some embodiments, such as Figure 3 and Figure 6 As shown, an elastic clamping member is provided on the outer side of the combination buckle plate 14. After the connecting end of the alarm speaker 15 is snapped onto the combination buckle plate 14, it abuts against the elastic clamping member, which is used to press the fixing block 19 onto the combination buckle plate 14.

[0062] For example, such as Figure 7 As shown, the elastic clamping component includes a fixed sleeve 11, two pairs of compression springs 12, and a compression sleeve 13. The fixed sleeve 11 is fixed to the outer side of the combination buckle plate 14 on the housing, and the combination buckle plate 14 can be fixed to the inner wall surface of the fixed sleeve 11. The compression sleeve 13 is movably fitted onto the fixed sleeve 11 and can reciprocate along the centerline of the fixed sleeve 11. The two pairs of compression springs 12 are disposed between the fixed sleeve 11 and the compression sleeve 13. When an external force presses down on the compression sleeve 13, the compression springs 12 are compressed, causing the compression sleeve 13 to move closer to the fixed sleeve 11. When the external force disappears, the compression springs 12 rebound, causing the compression sleeve 13 to return to its original position.

[0063] For example, such as Figure 6 As shown, the connection end of the alarm speaker 15 is provided with a circular boss 27.

[0064] During the installation of the alarm speaker 15 onto the housing, as the operator inserts the connecting end of the alarm speaker 15 into the rotation gap through the mounting hole on the combination buckle plate 14, the operator simultaneously applies downward pressure to the alarm speaker 15, causing the circular boss 27 to abut against the compression sleeve 13 and press down, thus compressing the compression spring 12. After the fixing block 19 is engaged between the housing and the combination buckle plate 14, the operator removes the downward pressure applied to the alarm speaker 15, causing the compression spring 12 to rebound and move the alarm speaker 15 outward, thereby pressing the fixing block 19 on the connecting end of the alarm speaker 15 tightly against the top wall of the combination buckle plate 14, preventing the alarm speaker 15 from loosening.

[0065] With the above settings, the alarm speaker 15 can be pressed down by the elastic clamping member to prevent the alarm speaker 15 from becoming loose.

[0066] In some embodiments, such as Figure 4 As shown, a fixing protrusion 18 is provided on the outer side of the combination plug 8, and an elastic sleeve 17 is provided on the inner wall of the combination slot 5.

[0067] For example, the number of fixing protrusions 18 on a combined insert 8 can be multiple, and the fixing protrusions 18 can be protrusions on the outer surface of the combined insert 8. The elastic sleeve 17 can be a rubber sleeve.

[0068] When the combination rod 8 is inserted into the combination slot 5, the fixing protrusion 18 on the combination rod 8 and the elastic sleeve 17 squeeze each other, causing the elastic sleeve 17 to undergo plastic deformation, thereby increasing the fixing force between the combination rod 8 and the combination slot 5 and ensuring the stability of the gas sensor 6.

[0069] In some examples, a network module is installed inside the housing. The network module is electrically connected to the gas sensor 6 and is used to acquire the gas concentration data monitored by the gas sensor 6 and send the gas concentration data of the gas sensor 6 to a monitoring terminal such as a mobile phone via network signal.

[0070] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A gas monitoring and alarm device, characterized in that, include: The alarm body (1) includes a housing and an alarm speaker (15); the alarm speaker (15) is mounted on the housing and is used to receive alarm signals from the gas sensor (6) to trigger an alarm; the housing is provided with a combination slot (5); and, A gas sensor (6) is used to monitor the gas concentration and output an alarm signal according to the gas concentration. A combination plug (8) is provided on the gas sensor (6), and the combination plug (8) is adapted to the combination slot (5). After the combination plug (8) of the gas sensor (6) is inserted into the combination slot (5), the gas sensor (6) is installed on the housing and the gas sensor (6) is electrically connected to the alarm speaker (15).

2. The gas monitoring and alarm device according to claim 1, characterized in that, A sensor socket (3) is provided in the housing at the position corresponding to the gas sensor (6), and the sensor socket (3) is electrically connected to the alarm speaker (15); The gas sensor (6) has a connector plug on the side facing the housing, and the connector plug is compatible with the sensor socket (3); When the combined plug (8) of the gas sensor (6) is inserted into the combined slot (5), the connecting plug of the gas sensor (6) is inserted into the sensor socket (3) and electrically connected to the sensor socket (3).

3. The gas monitoring and alarm device according to claim 2, characterized in that, The sensor socket (3) on the housing is provided with a mounting groove (2) on the outside; The gas monitoring and alarm device also includes a protective ventilator (9); after the gas sensor (6) is installed on the housing, the protective ventilator (9) is inserted into the mounting slot (2) and then fastened to the outside of the gas sensor (6) on the housing to protect the gas sensor (6).

4. The gas monitoring and alarm device according to claim 3, characterized in that, It also includes protective locking components; The protective locking member is fixed to the outer side of the protective ventilator (9) on the housing. The protective locking member has a telescopic locking rod (25) on the side facing the mounting groove (2). The protective ventilator (9) has a locking hole on the side wall corresponding to the locking rod (25). After the locking rod (25) extends out, it can be inserted into the locking hole to lock the protective ventilator (9).

5. The gas monitoring and alarm device according to claim 4, characterized in that, The number of the protective locking components is two, and the two protective locking components are respectively arranged on opposite sides of the protective ventilator (9); The number of locking holes on the protective ventilator (9) is also two, and the two locking holes are set one-to-one with the two protective locking parts.

6. The gas monitoring and alarm device according to claim 2, characterized in that, The alarm speaker (15) is detachably mounted on the housing and is electrically connected to the sensor socket (3) after being mounted on the housing.

7. The gas monitoring and alarm device according to claim 6, characterized in that, A combination buckle plate (14) is provided on the housing at the position corresponding to the alarm speaker (15). A mounting hole is provided in the middle of the combination buckle plate (14), and the mounting hole allows the connecting end of the alarm speaker (15) to pass through. A rotation gap is formed between the combination buckle plate (14) and the housing. An embedding groove (20) is provided on the side wall of the mounting hole. A fixing block (19) is provided on the outside of the connection end of the alarm speaker (15). The fixing block (19) can pass through the embedding groove (20) and rotate within the rotation gap. After the fixing block (19) passes through the embedding groove (20) and rotates within the rotation gap, the combination buckle plate (14) can engage the fixing block (19) between the housing and the combination buckle plate (14) to mount the alarm speaker (15) on the housing.

8. The gas monitoring and alarm device according to claim 7, characterized in that, The outer side of the combined buckle plate (14) is provided with an elastic clamping element; The connecting end of the alarm speaker (15) is snapped onto the combination buckle plate (14) and then abuts against the elastic clamping member, which is used to press the fixing block (19) onto the combination buckle plate (14).

9. The gas monitoring and alarm device according to claim 1, characterized in that, The number of the combined plug (8) and the combined slot (5) are both multiple, and the multiple combined plugs (8) and the multiple combined slots (5) are arranged in a one-to-one correspondence.

10. The gas monitoring and alarm device according to claim 9, characterized in that, The outer side of the combined insert (8) is provided with a fixing protrusion (18), and the inner wall of the combined slot (5) is provided with an elastic sleeve (17).

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