Portable double-detection laser type multi-component gas detection alarm

Abstract

The utility model discloses a portable double detection laser type multi-component gas detection alarm, relates to the gas detection alarm technical field, and comprises a housing, the top end of the housing is provided with a circular groove in a penetrating manner, the inner part of the circular groove is fixedly connected with a sucker, the inner part of the housing is provided with a wind box, the inner part of the wind box is rotatably provided with a rotating plate, and the rotating plate is fixedly connected with the sucker. A fan is fixedly connected to the rotating plate, the rotating plate drives the fan to turn over to achieve wind direction switching, the top of the wind box communicates with a first wind pipe, the end, away from the wind box, of the first wind pipe communicates with a suction cup, a first electromagnetic valve is fixedly installed on the first wind pipe, and the bottom of the wind box communicates with a third wind pipe. The bottom end of the third air pipe communicates with an air cover, and a gas sensitive sensor is fixedly connected to the inner wall of the air cover. According to the portable double-detection laser type multi-component gas detection alarm, by arranging the suction cup, the fan, the fan cover and other structures, the effects of adsorbing, fixing and removing impurities at the vent groove can be achieved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection alarms, and particularly relates to a portable dual-detection laser multi-component gas detection alarm. Background Art

[0002] An alarm is an electronic product that, in order to prevent or pre-empt the consequences of an event, uses forms such as sound, light, air pressure, etc. to remind or warn us that we should take a certain action.

[0003] Existing gas detection alarms are mostly installed by hanging with bolts. Operators need to carry drilling equipment, bolt tightening equipment, gas detection alarms, etc., which increases the working intensity of the operators; and the air inlet holes are prone to being blocked by sundries, affecting the detection accuracy.

[0004] Therefore, it is very necessary to propose a portable dual-detection laser multi-component gas detection alarm to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a portable dual-detection laser multi-component gas detection alarm to solve the problems that existing gas detection alarms are mostly installed by hanging with bolts, operators need to carry drilling equipment, bolt tightening equipment, gas detection alarms, etc., which increases the working intensity of the operators; and the air inlet holes are prone to being blocked by sundries, affecting the detection accuracy.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A portable dual-detection laser multi-component gas detection alarm, including a housing. A circular groove is penetrated and opened at the top end of the housing, and a suction cup is fixedly connected inside the circular groove. An air box is arranged inside the housing. A rotating plate is rotatably arranged inside the air box. A fan is fixedly connected to the rotating plate, and the rotating plate drives the fan to flip to realize the air direction switching. The top of the air box is communicated with a first air duct, and one end of the first air duct away from the air box is communicated with the suction cup. A first electromagnetic valve is fixedly installed on the first air duct. The bottom of the air box is communicated with a third air duct, and the bottom end of the third air duct is communicated with an air hood. A gas sensor is fixedly connected to the inner wall of the air hood.

[0007] Preferably, a motor is fixedly connected to the outer wall of the air box, and the rotating plate is fixedly connected to the driving shaft of the motor.

[0008] Preferably, the top of the air box is communicated with a second air duct, and a second electromagnetic valve is fixedly installed on the second air duct. An air slot is penetrated and opened on the side wall of the housing, and one end of the second air duct away from the air box is communicated with the air slot.

[0009] Preferably, a filter screen is fixedly installed inside the air slot.

[0010] Preferably, a plurality of ventilation grooves are formed at the bottom end of the housing.

[0011] Preferably, a laser emitter is fixedly installed at the bottom end of the inner wall of the housing, and a laser receiver is fixedly installed in the middle of the inner wall of the housing.

[0012] Preferably, reflecting mirrors are fixedly connected to both inner walls of the housing, and the reflecting mirrors cooperate with the laser receiver and the laser emitter.

[0013] Preferably, a support plate is fixedly connected to the inner wall of the housing, and the air box is fixedly connected to the support plate.

[0014] Preferably, a warning light and a buzzer are fixedly installed on the outer wall of the housing.

[0015] The technical effects and advantages of the present utility model:

[0016] 1. By setting structures such as a suction cup, a fan, and a wind hood, the present utility model can simultaneously achieve the effects of adsorption and fixation and removal of impurities at the ventilation grooves. Moreover, the gas detection alarm is adsorbed and fixed on the building through the suction cup, which is more convenient than the method of using bolts in the prior art. There is no need to carry drilling equipment, bolt fastening equipment, etc., increasing the flexibility of the operator to carry.

[0017] 2. When the fan operates, it can also suck in external air through the second air duct and the air grooves, and blow it towards the ventilation grooves through the third air duct and the wind hood to blow away the impurities accumulated at the ventilation grooves, facilitating subsequent air intake detection.

[0018] 3. The laser emitter emits laser light, and the laser light is continuously reflected back and forth between the two reflecting mirrors on both sides, and finally received by the laser emitter. By continuously reflecting the laser, the distance of laser transmission can be increased.

[0019] 4. The gas sensor cooperates with the laser receiver and the laser emitter to achieve the function of double detection. Moreover, the gas sensor utilizes the adsorption effect of gas molecules on the surface of the sensor, resulting in a change in the resistance on the surface of the sensor, thereby realizing the detection of gas components and concentration; the laser receiver and the laser emitter are based on the laser scattering method or the reflection laser detection principle for detection, achieving the effect of multi-component detection and improving the detection sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a portable dual-detection laser multi-component gas detection alarm of the present utility model from one perspective.

[0021] Figure 2 is a schematic structural diagram of a portable dual-detection laser multi-component gas detection alarm of the present utility model from another perspective.

[0022] Figure 3This is a schematic cross-sectional structure diagram of a portable dual-detection laser multi-component gas detection alarm of the present utility model.

[0023] Figure 4 For the present utility model Figure 3 A schematic enlarged view of the structure at position A in the figure.

[0024] Figure 5 For the present utility model Figure 3 A schematic enlarged view of the structure at position B in the figure.

[0025] In the figure: 1. Housing; 2. Circular groove; 3. Suction cup; 4. Ventilation groove; 5. Support plate; 6. Wind box; 7. Rotating plate; 8. Fan; 9. Motor; 10. First air duct; 11. First solenoid valve; 12. Second air duct; 13. Second solenoid valve; 14. Wind groove; 15. Filter screen; 16. Third air duct; 17. Wind hood; 18. Gas sensor; 19. Laser receiver; 20. Laser emitter; 21. Reflecting mirror. Specific implementation manner

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] The present utility model provides a Figures 1 to 5 portable dual-detection laser multi-component gas detection alarm as shown in the figure, including a housing 1. A circular groove 2 is penetrated and opened at the top of the housing 1, and a suction cup 3 is fixedly connected inside the circular groove 2. The top of the suction cup 3 is made of rubber material. During specific use, the gas detection alarm is adsorbed and fixed on a building through the suction cup 3, which is more convenient compared to the existing method of using bolts. There is no need to carry drilling equipment, bolt fastening equipment, etc., increasing the flexibility of the operator to carry. For example, multiple can be carried simultaneously using an ordinary backpack.

[0028] To enable the suction cup 3 to adsorb and fix on a building, an air box 6 is arranged inside the housing 1. A support plate 5 is fixedly connected to the inner wall of the housing 1, and the air box 6 is fixedly connected to the support plate 5. A rotating plate 7 is rotatably arranged inside the air box 6. A fan 8 is fixedly connected to the rotating plate 7. An internal drive motor is arranged on the fan 8, which generates wind power during operation. The fan 8 and its working principle are both common existing technologies and will not be elaborated here. A motor 9 is fixedly connected to the outer wall of the air box 6. The rotating plate 7 is fixedly connected to the drive shaft of the motor 9. The motor 9 drives the rotating plate 7 to rotate, and the rotating plate 7 drives the fan 8 to flip to achieve wind direction switching. The top of the air box 6 is communicated with a first air duct 10. One end of the first air duct 10 away from the air box 6 is communicated with the suction cup 3. A first solenoid valve 11 is fixedly installed on the first air duct 10.

[0029] The bottom of the air box 6 is communicated with a third air duct 16. The bottom end of the third air duct 16 is communicated with an air hood 17. A plurality of ventilation slots 4 are opened at the bottom end of the housing 1. External gas, smoke, etc. enter the inside of the housing 1 through the ventilation slots 4 for detection, and impurities are likely to accumulate at the ventilation slots 4.

[0030] When it is necessary to fix the gas detector on a building, start the fan 8, and the wind direction is: from the suction cup 3 to the air hood 17. The gas inside the suction cup 3 is sucked through the first air duct 10, so that the inside of the suction cup 3 is in a negative pressure state. Then close the first solenoid valve 11 to ensure the adsorption and fixation state. And during this process, the sucked gas is blown from the third air duct 16 and the air hood 17 to the ventilation slots 4, blowing away the impurities accumulated at the ventilation slots 4, which is convenient for subsequent air intake detection.

[0031] By setting structures such as the suction cup 3, the fan 8, and the air hood 17, the effects of adsorption and fixation and removing impurities at the ventilation slots 4 can be achieved simultaneously.

[0032] Considering that the gas in the suction cup 3 is limited, to ensure the cleaning effect of the impurities at the ventilation slots 4, a second air duct 12 is communicated with the top end of the air box 6. A second solenoid valve 13 is fixedly installed on the second air duct 12. An air slot 14 is penetrated through the side wall of the housing 1. One end of the second air duct 12 away from the air box 6 is communicated with the air slot 14. A filter screen 15 is fixedly installed inside the air slot 14.

[0033] During operation, open the second solenoid valve 13. When the fan 8 operates, it sucks external air through the second air duct 12 and the air slot 14, and blows it from the third air duct 16 and the air hood 17 to the ventilation slots 4, blowing away the impurities accumulated at the ventilation slots 4, which is convenient for subsequent air intake detection.

[0034] The filter screen 15 can filter impurities in the air.

[0035] A gas sensor 18 is fixedly connected to the inner wall of the wind cover 17, and a warning light and a buzzer are fixedly installed on the outer wall of the housing 1. Specifically, a controller can be set to be connected between the warning light, the buzzer and the gas sensor 18. When the gas sensor 18 detects the corresponding gas, it is determined as a fire, and this information is transmitted to the controller. The controller controls the start of the warning light and the buzzer respectively. The controller and its control principle are common existing technologies and will not be elaborated here.

[0036] When it is not necessary to clean the ventilation slot 4, the motor 9 drives the rotating plate 7 to rotate, the rotating plate 7 drives the fan 8 to turn over, and the wind direction is: from the wind cover 17 to the suction cup 3. At the same time, the second solenoid valve 13 is opened and the first solenoid valve 11 is closed.

[0037] When a fire occurs and generates smoke, the fan 8 sucks through the third air duct 16 and the wind cover 17. The smoke enters the housing 1 through the ventilation slot 4 and enters the wind cover 17. When the gas sensor 18 detects the corresponding gas, it is determined as a fire, and the controller controls the warning light and the buzzer to start.

[0038] Moreover, the discharged gas can back-blow the impurities accumulated at the filter net 15 to prevent the filter net 15 from being blocked, which is convenient for subsequent use.

[0039] However, the wind speed generated by the fan 8 is small to ensure that the flow rate of the smoke inside the wind cover 17 is appropriate, which is convenient for the gas sensor 18 to detect. At the same time, compared with the natural entry into the housing 1, the fan 8 can accelerate the speed of the smoke entering the housing 1 to a certain extent.

[0040] To improve the detection efficiency, a laser emitter 20 is fixedly installed at the bottom end of the inner wall of the housing 1, and a laser receiver 19 is fixedly installed in the middle of the inner wall of the housing 1. Reflective mirrors 21 are fixedly connected to both inner walls of the housing 1, and the reflective mirrors 21 cooperate with the laser receiver 19 and the laser emitter 20. The laser receiver 19 and the laser emitter 20 are also connected to the controller.

[0041] Specifically, the laser emitter 20 emits laser, and the laser continuously reflects back and forth between the two reflective mirrors 21 and is finally received by the laser emitter 20. By continuously reflecting the laser, the transmission distance of the laser can be increased. After the smoke enters the housing 1, due to the large smoke concentration blocking the transmission of the laser, the laser receiver 19 cannot receive the laser. At this time, the controller controls the warning light and the buzzer to start.

[0042] The gas sensor 18 cooperates with the laser receiver 19 and the laser emitter 20 to achieve the function of double detection. The gas sensor 18 utilizes the adsorption of gas molecules on the sensor surface, which causes a change in the resistance of the sensor surface, thereby realizing the detection of gas components and concentration. The laser receiver 19 and the laser emitter 20 are based on the laser scattering method or the reflection laser detection principle for detection, achieving the detection effect of multiple components and improving the detection sensitivity.

[0043] And a power supply device is arranged inside the housing 1 to supply power to structures such as the motor 9. The power supply device includes structures such as a storage battery, and other power supply methods can also be used, which can be adjusted according to specific usage situations.

Claims

1. A portable dual-detection laser multi-component gas detection alarm, comprising a housing (1), characterized in that: A circular groove (2) is penetrated and opened at the top end of the housing (1), a suction cup (3) is fixedly connected inside the circular groove (2), an air box (6) is arranged inside the housing (1), a rotating plate (7) is rotatably arranged inside the air box (6), a fan (8) is fixedly connected to the rotating plate (7), and the rotating plate (7) drives the fan (8) to flip to realize the air direction switching. The top of the air box (6) is communicated with a first air duct (10), one end of the first air duct (10) far away from the air box (6) is communicated with the suction cup (3), a first solenoid valve (11) is fixedly installed on the first air duct (10), the bottom of the air box (6) is communicated with a third air duct (16), the bottom end of the third air duct (16) is communicated with an air hood (17), and a gas sensor (18) is fixedly connected to the inner wall of the air hood (17).

2. The portable dual-detection laser multi-component gas detection alarm according to claim 1, characterized in that: A motor (9) is fixedly connected to the outer wall of the air box (6), and the rotating plate (7) is fixedly connected to the driving shaft of the motor (9).

3. The portable dual-detection laser multi-component gas detection alarm according to claim 1, characterized in that: The top of the air box (6) is communicated with a second air duct (12), a second solenoid valve (13) is fixedly installed on the second air duct (12), an air slot (14) is penetrated and opened on the side wall of the housing (1), and one end of the second air duct (12) far away from the air box (6) is communicated with the air slot (14).

4. The portable dual-detection laser multi-component gas detection alarm according to claim 3, characterized in that: A filter screen (15) is fixedly installed inside the air slot (14).

5. The portable dual-detection laser multi-component gas detection alarm according to claim 1, wherein: A plurality of ventilation slots (4) are opened at the bottom end of the housing (1).

6. The portable dual-detection laser multi-component gas detection alarm according to claim 1, characterized in that: A laser emitter (20) is fixedly installed at the bottom end of the inner wall of the housing (1), and a laser receiver (19) is fixedly installed in the middle of the inner wall of the housing (1).

7. The portable dual-detection laser multi-component gas detection alarm according to claim 6, characterized in that: Reflecting mirrors (21) are fixedly connected to both inner side walls of the housing (1), and the reflecting mirrors (21) cooperate with the laser receiver (19) and the laser emitter (20).

8. The portable dual-detection laser multi-component gas detection alarm according to claim 1, wherein: A support plate (5) is fixedly connected to the inner wall of the housing (1), and the air box (6) is fixedly connected to the support plate (5).

9. The portable dual-detection laser multi-component gas detection alarm according to claim 1, wherein: A warning light and a buzzer are fixedly installed on the outer wall of the housing (1).

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