Combustible gas alarm with airflow evacuation structure

Abstract

The utility model discloses a combustible gas alarm with an airflow evacuation structure, and relates to the technical field of combustible gas alarms, the combustible gas alarm comprises a mounting plate and a detection head, one side of the mounting plate is provided with an alarm body, and one end of the mounting plate is connected with a lead through a joint. According to the combustible gas alarm with the airflow evacuation structure, when gas leaks, a micro motor drives a second gear to rotate, then the second gear drives a first gear to rotate, then the first gear drives a rotating shaft to rotate, and then the rotating shaft drives an air suction fan to rotate; the gas suction fan drives combustible gas to move towards the detection head along the inclined surface of the flow guide cover, and meanwhile, the plurality of flow guide strips enable the gas to be more uniformly distributed in the flow guide cover, so that the gas is prevented from being accumulated at the same position, gas evacuation is facilitated, the gas is quickly guided into the detection head, and induction detection is quickly performed; and the detection efficiency and the detection quality of the combustible gas alarm are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustible gas alarms, in particular to a combustible gas alarm with an airflow evacuation structure. Background Art

[0002] A combustible gas alarm is a safety device used to detect combustible gas concentrations in the air. It uses a built-in sensor to monitor gas concentrations in real time. When the concentration exceeds a set safety threshold, it immediately issues an audible and visual alarm, prompting the user to take emergency measures. These devices are commonly used in industrial, commercial, and domestic environments, effectively preventing fires, explosions, and other safety incidents.

[0003] However, when most existing combustible gas alarms are working, the combustible gas usually rises and contacts the detection end of the combustible gas alarm, and the gas concentration is sensed by the sensor at the detection end. However, since the detection end of the combustible gas alarm is relatively small, some gas rises and cannot directly contact the detection end, and some gas will be retained in a local area, forming a detection blind spot, which reduces the detection efficiency of the combustible gas alarm. Therefore, the current combustible gas alarm needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a combustible gas alarm with an airflow evacuation structure to solve the problem raised in the above background technology that the detection end of the combustible gas alarm currently on the market is relatively small, resulting in some gas rising and not being able to directly contact the detection end, and some gas will be retained in a local area, forming a detection blind spot, thereby reducing the detection efficiency of the combustible gas alarm.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combustible gas alarm with an airflow evacuation structure, comprising a mounting plate and a detection head, an alarm body being mounted on one side of the mounting plate, one end of the mounting plate being connected to a wire through a connector, and the other end of the mounting plate being connected to an alarm light, the detection head being connected to the bottom of the alarm body, a flow guide cover being connected to the bottom of the alarm body near the outside of the detection head, and a protective cover being fixed to the inner side of the flow guide cover near the bottom of the detection head.

[0006] Preferably, a flow guide mechanism is installed on the inner side of the protective cover, and the flow guide mechanism includes a rotating shaft, an air suction fan, a first gear, a second gear and a micro motor. The rotating shaft is installed on the inner side of the protective cover through a bearing.

[0007] Preferably, a No. 1 gear is fixedly sleeved on the outer side of the rotating shaft, and a No. 2 gear is meshedly connected to one side of the No. 1 gear.

[0008] Preferably, one end of the second gear is connected to a micro motor via a coupling.

[0009] Preferably, the micro motor is located outside the air guide cover, and one end of the rotating shaft is connected to an air suction fan.

[0010] Preferably, the inner wall of the deflector is provided with deflector strips distributed at equal intervals.

[0011] Preferably, a top plate is fixed to a side of the mounting plate close to the alarm body, and a protective mechanism is installed above the top plate.

[0012] Preferably, the protective mechanism includes a buffer plate, a sliding rod, a rubber strip, and a buffer spring, and the sliding rod is fixed in the reserved groove of the top plate.

[0013] Preferably, a buffer plate and a buffer spring are slidably sleeved on the outer side of the slide rod, and rubber strips distributed at equal intervals are pasted on the outer side of the buffer plate.

[0014] Preferably, the buffer plate adopts an arc-shaped plate structure, and the material of the buffer plate is polyurethane.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. It is equipped with a guide mechanism, a guide strip and a guide cover. When gas leaks, the micro motor drives the No. 2 gear to rotate, and the No. 2 gear drives the No. 1 gear to rotate, and then the No. 1 gear drives the rotating shaft to rotate, and the rotating shaft then drives the suction fan to rotate. The suction fan drives the combustible gas to move along the inclined surface of the guide cover toward the detection head. At the same time, multiple guide strips make the gas more evenly distributed in the guide cover, preventing the gas from accumulating in the same position, which is conducive to evacuating the gas and quickly introducing the gas into the detection head for rapid induction detection, thereby improving the detection efficiency and quality of the combustible gas alarm.

[0017] 2. A protective mechanism is provided. When an object falls on top of the combustible gas alarm, the object is first cushioned by the rubber strips distributed at equal intervals, and then the object squeezes the buffer plate. Since the buffer plate has an arc-shaped structure, it can well disperse the force of the collision, and at the same time, the two ends of the buffer plate slide to both sides on the slide rod, and the buffer spring provides elastic support, which can improve the elasticity of the buffer plate. Through the protection of the buffer plate, the safety of the combustible gas alarm is improved and the service life is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the air deflector of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the air deflector of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the guide strip of the utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the flow guide mechanism of the utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the protective mechanism of the utility model.

[0024] In the figure: 1. Mounting plate; 2. Alarm body; 3. Wire; 4. Connector; 5. Alarm light; 6. Diversion mechanism; 601. Rotating shaft; 602. Suction fan; 603. Gear No. 1; 604. Gear No. 2; 605. Micro motor; 7. Protective cover; 8. Top plate; 9. Protective mechanism; 901. Buffer plate; 902. Sliding rod; 903. Rubber strip; 904. Buffer spring; 10. Detection head; 11. Diversion cover; 12. Diversion strip. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 3 The utility model provides a technical solution: a combustible gas alarm with an airflow evacuation structure, including a mounting plate 1 and a detection head 10, an alarm body 2 is installed on one side of the mounting plate 1, one end of the mounting plate 1 is connected to a wire 3 through a connector 4, and the other end of the mounting plate 1 is connected to an alarm light 5, and the detection head 10 is connected below the alarm body 2.

[0027] See also Figure 1-Figure 5The alarm body 2 is connected to a guide cover 11 below the outer side of the detection head 10. A protective cover 7 is fixed to the inner side of the guide cover 11 below the detection head 10. A guide mechanism 6 is installed on the inner side of the protective cover 7. The guide mechanism 6 includes a rotating shaft 601, an air suction fan 602, a first gear 603, a second gear 604 and a micro motor 605. The inner side of the protective cover 7 is equipped with a rotating shaft 601 through a bearing. The outer side of the rotating shaft 601 is fixedly sleeved with the first gear 603. One side of the number one gear 603 is meshed with the number two gear 604, one end of the number two gear 604 is connected to a micro motor 605 through a coupling, the micro motor 605 is located on the outside of the air guide cover 11, one end of the rotating shaft 601 is connected to the air intake fan 602, and the inner wall of the air guide cover 11 is provided with guide strips 12 distributed at equal intervals, and the guide strips 12 are arranged in an inclined shape. The cross-sectional shape of the air guide cover 11 is trapezoidal, and the air guide cover 11 is sleeved on the outside of the detection head 10.

[0028] In specific implementation, since most combustible gas alarms are working, the combustible gas usually rises and contacts the detection end of the combustible gas alarm, and the gas concentration is sensed by the sensor at the detection end. However, since the detection end of the combustible gas alarm is relatively small, some gases rise and cannot directly contact the detection end, and some gases will be retained in a local area, forming a detection blind spot, which reduces the detection efficiency of the combustible gas alarm. When the gas leaks, the micro motor 605 can drive the second gear 604 to rotate, and the second gear 604 then drives the first gear 603 to rotate, and then the first gear 603 drives the rotating shaft 601 to rotate, and the rotating shaft 601 then drives the suction fan 602 to rotate, and the suction fan 602 drives the combustible gas to move along the inclined surface of the guide cover 11 to the detection head 10. At the same time, multiple guide strips 12 make the gas more evenly distributed in the guide cover 11, preventing the gas from accumulating in the same position, which is conducive to evacuating the gas, so that the gas can be quickly introduced into the detection head 10, and quickly perform induction detection, thereby improving the detection efficiency and detection quality of the combustible gas alarm.

[0029] See also Figure 1-Figure 3 and Figure 6 A top plate 8 is fixed to the side of the mounting plate 1 close to the alarm body 2, and a protective mechanism 9 is installed above the top plate 8. The protective mechanism 9 includes a buffer plate 901, a slide rod 902, a rubber strip 903, and a buffer spring 904. A slide rod 902 is fixed in the reserved groove of the top plate 8, and the outer side of the slide rod 902 is slidably sleeved with a buffer plate 901 and a buffer spring 904. The outer side of the buffer plate 901 is pasted with rubber strips 903 distributed at equal intervals. The buffer plate 901 adopts an arc-shaped plate structure, and the material of the buffer plate 901 is polyurethane.

[0030] During specific implementation, since the top of the combustible gas alarm is usually exposed, some objects falling from top to bottom onto the combustible gas alarm will cause some damage to the combustible gas alarm. When the object falls onto the combustible gas alarm, the object can be first buffered by the rubber strips 903 distributed at equal intervals, and then the object squeezes the buffer plate 901. Since the structure of the buffer plate 901 is an arc shape, the force of the collision can be well dispersed, and at the same time, the two ends of the buffer plate 901 slide to both sides on the slide bar 902, and the buffer spring 904 provides elastic support, which can improve the elasticity of the buffer plate 901. Through the protection of the buffer plate 901, the safety of the combustible gas alarm is improved and the service life is extended.

[0031] Working principle: When using the combustible gas alarm with an airflow evacuation structure, first install the mounting plate 1 on the wall or bracket with expansion bolts. When combustible gas leaks from the pipeline, the gas can be evacuated and diverted to the detection head 10 through the deflector 11, the diversion mechanism 6 and the guide strip 12 to prevent gas retention and affect the detection efficiency and quality. The alarm light 5 provides a warning, and the wire 3 and the connector 4 provide electricity. When an object falls on top of the combustible gas alarm, the protective mechanism 9 reduces the impact force, thereby improving the safety of the combustible gas alarm. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combustible gas alarm with an airflow evacuation structure, comprising a mounting plate (1) and a detection head (10), characterized in that: An alarm body (2) is installed on one side of the mounting plate (1), one end of the mounting plate (1) is connected to a wire (3) via a connector (4), and the other end of the mounting plate (1) is connected to an alarm light (5). The detection head (10) is connected below the alarm body (2), and a flow guide cover (11) is connected below the outer side of the alarm body (2) near the detection head (10), and a protective cover (7) is fixed on the inner side of the flow guide cover (11) near the bottom of the detection head (10).

2. A combustible gas alarm with an airflow evacuation structure according to claim 1, characterized in that: A flow guide mechanism (6) is installed on the inner side of the protective cover (7), and the flow guide mechanism (6) comprises a rotating shaft (601), an air suction fan (602), a first gear (603), a second gear (604) and a micro motor (605). The rotating shaft (601) is installed on the inner side of the protective cover (7) via a bearing.

3. The combustible gas alarm with an airflow evacuation structure according to claim 2, characterized in that: A first gear (603) is fixedly sleeved on the outer side of the rotating shaft (601), and a second gear (604) is meshedly connected to one side of the first gear (603).

4. The combustible gas alarm with an airflow evacuation structure according to claim 3, characterized in that: One end of the second gear (604) is connected to a micro motor (605) via a coupling.

5. The combustible gas alarm with an airflow evacuation structure according to claim 4, characterized in that: The micro motor (605) is located outside the air guide cover (11), and one end of the rotating shaft (601) is connected to an air suction fan (602).

6. The combustible gas alarm with an airflow evacuation structure according to claim 5, characterized in that: The inner wall of the deflector cover (11) is provided with deflector strips (12) distributed at equal intervals.

7. The combustible gas alarm with an airflow evacuation structure according to claim 1, characterized in that: A top plate (8) is fixed to one side of the mounting plate (1) close to the alarm body (2), and a protective mechanism (9) is installed above the top plate (8).

8. The combustible gas alarm with an airflow evacuation structure according to claim 7, characterized in that: The protective mechanism (9) comprises a buffer plate (901), a slide bar (902), a rubber strip (903), and a buffer spring (904); the slide bar (902) is fixed in a reserved groove of the top plate (8).

9. The combustible gas alarm with an airflow evacuation structure according to claim 8, characterized in that: The outer side of the slide bar (902) is slidably sleeved with a buffer plate (901) and a buffer spring (904), and the outer side of the buffer plate (901) is pasted with rubber strips (903) distributed at equal intervals.

10. The combustible gas alarm with an airflow evacuation structure according to claim 9, characterized in that: The buffer plate (901) adopts an arc-shaped plate structure, and the material of the buffer plate (901) is polyurethane.

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